28. August 2026

HMRC Nudge Letters to Landlords: What They Mean and How to Respond

Article written by PR Accountants LTD in the category Property

Last updated: August 2026

A nudge letter is a warning to review the position, not a final tax decision

Receiving a letter from HM Revenue and Customs about property income can be unsettling.

The letter may say that HMRC has information suggesting that the recipient is a landlord, owns a property that may have been let, or may have received income that does not appear to have been reported correctly.

It may ask the recipient to:

Review earlier tax returns
Check whether all rental income was declared
Correct any errors
Make a disclosure of unpaid tax
Explain why no correction is required
Complete and return a declaration or certificate
Respond by a particular date

These letters are commonly described as nudge letters because they are intended to prompt taxpayers to check and, where necessary, correct their own tax affairs.

A nudge letter is not proof that tax is due. HMRC's information may be incomplete, may relate to a jointly owned property, or may identify ownership without proving that the property was let.

However, the letter should never be ignored.

HMRC has already identified a possible inconsistency. A careless reply, unsupported declaration or failure to respond may increase the likelihood of a formal compliance check.

The correct response is neither to panic nor to send an immediate admission. It is to establish the facts, calculate the correct tax position and reply through the route specified in the letter.

What is an HMRC nudge letter?

HMRC describes many large-scale nudge-letter exercises as a One to Many approach.

This is where HMRC sends a standard or substantially similar message to a group of taxpayers who share a particular compliance risk. The purpose is to encourage those taxpayers to take action without HMRC opening an individual enquiry into every case.

HMRC's own One to Many guidance expressly says that a One to Many approach is not a compliance check.

This distinction matters.

It means the letter may give the landlord an opportunity to review and correct the position before HMRC uses its formal enquiry or information powers. It does not mean that HMRC has accepted the taxpayer's position, agreed the amount of tax or promised not to investigate later.

The exact status of the letter depends on its wording.

Some letters are general prompts. Others state that HMRC has opened a compliance check or include a formal information notice. A landlord should not rely only on the informal label "nudge letter". The statutory references, enclosures, deadline and name of the HMRC team must all be reviewed.

Is a nudge letter the same as a tax enquiry?

Usually, no.

The terms are sometimes used loosely, but they have different consequences.

One to Many nudge letter

HMRC has identified a possible risk and is asking the taxpayer to review and respond. HMRC says this is not itself a compliance check.

The landlord should review the full tax position, follow the letter's instructions and reply by its deadline.

Formal compliance check or enquiry

HMRC has begun checking the taxpayer's position, return, claim or a particular issue.

The landlord should deal with the named officer, preserve all records and obtain advice on the scope, information requested and penalty position.

Schedule 36 information notice

HMRC is formally requiring specified information or documents.

The landlord should check that the notice is valid and proportionate, comply by the deadline or take advice promptly on any appeal or request for variation.

Assessment or penalty notice

HMRC has made a tax or penalty decision.

The landlord should check the calculation and appeal deadline. A response to an earlier nudge letter does not replace an appeal.

HMRC's compliance-check guidance says that it will write or call to explain what it wants to check. The named officer's details should appear on the compliance-check letter.

A formal information notice carries different consequences from an informal request. Current HMRC guidance says that failing to comply with an information notice can result in an initial £300 penalty, followed by daily penalties of up to £60 if non-compliance continues. Providing inaccurate information carelessly or deliberately can also result in a penalty. See HMRC's information notice factsheet.

The first task is therefore to identify what the landlord has actually received.

Why does HMRC send nudge letters to landlords?

HMRC uses nudge letters where information available to it indicates that a taxpayer may not have reported the correct amount.

For a landlord, the perceived risk may include:

No property pages being included in a Self Assessment return
No Self Assessment registration despite information suggesting that property was let
Rental income appearing lower than expected
A property being omitted from a portfolio
Gross rent being understated because only net letting-agent payments were recorded
Online short-term letting receipts not appearing in the return
Property income being reported by one joint owner but not another
Overseas rental income not being included in a UK tax return
A non-resident landlord receiving UK rent without the expected tax reporting
A property disposal not matching the Capital Gains Tax information reported
A relief, expense or finance-cost claim appearing inconsistent
Information from a third party not matching figures reported to HMRC

The letter may identify the specific tax year, property, platform, transaction or source of information. It may also be deliberately broad and ask the landlord to review all relevant tax affairs.

The existence of a risk does not establish an error.

For example, the property may have:

Been the taxpayer's own home throughout the period
Remained vacant
Been occupied by a family member without rent
Been owned only as a bare trustee or nominee
Been transferred before the relevant letting period
Generated income that was correctly reported by another beneficial owner
Produced receipts within an applicable exemption
Made a genuine tax loss
Been reported under a different taxpayer reference
Been owned by a company rather than the individual who received the letter

These explanations should be evidenced, not simply asserted.

How might HMRC know that a property was let?

Landlords should not assume that HMRC sees only the figures entered on a tax return.

HMRC has legal powers to collect third-party data and use it in compliance work. Its data-gathering manual gives rental income paid by letting agents to landlords as an example of bulk third-party data it can obtain.

Depending on the case, HMRC may compare tax returns with information connected with:

Letting agents and property managers
Online accommodation or booking platforms
Property ownership and transactions
Non-resident landlord records
Other government departments or public bodies
Banks and payment records where HMRC has the appropriate powers
Earlier tax returns and previous correspondence
Information supplied during another taxpayer's compliance check

HMRC does not necessarily have a complete or perfectly interpreted set of facts.

A data match may show that money was paid to a landlord without showing:

The landlord's allowable expenses
The correct beneficial ownership split
Whether the amount included refundable deposits
Whether income was reported in a different period
Whether the platform statement included cleaning charges, fees or refunds
Whether the taxpayer acted as agent for another owner
Whether the property qualified for a relief
Whether tax was deducted under the Non-resident Landlords Scheme

This is why a nudge letter asks for a review rather than simply issuing a final bill.

It is also why the landlord's response should reconcile HMRC's apparent information to the legal and tax position, rather than merely deny that anything is wrong.

Could the letter be a scam?

Yes. Fraudsters can imitate HMRC correspondence.

Before providing personal information, bank details or tax records, the landlord should verify that the letter is genuine.

Practical checks include:

Compare the contact details with details published independently on GOV.UK
Check whether the letter type or campaign appears on HMRC's genuine correspondence page
Use an independently sourced HMRC telephone number rather than relying only on a number in a suspicious letter
Check the taxpayer's Personal Tax Account for related information where appropriate
Ask the authorised tax agent to verify the contact through recognised HMRC channels
Treat requests for payment to an individual's bank account, gift cards or cryptocurrency as fraudulent

A letter not appearing on HMRC's published list is not automatically fraudulent. The list does not contain every item of genuine correspondence.

If the letter is genuine, preserve the original envelope and every enclosure. The date of receipt may become relevant where a response deadline is disputed.

What should a landlord do immediately after receiving a nudge letter?

The safest response follows a controlled sequence.

Step 1: Read the entire letter and every enclosure

Do not respond after reading only the first paragraph.

Identify:

The HMRC office or campaign
The taxpayer's name and reference
The property or issue HMRC has identified
The tax years mentioned
The action requested
The response deadline
The permitted method of response
Whether a certificate or declaration is enclosed
Whether the letter says a compliance check has begun
Whether a formal information notice is enclosed
Whether the letter directs the taxpayer to a particular disclosure facility

Different parts of the same letter may have different deadlines.

For example, the nudge letter may require a response within a stated period, while a later Let Property Campaign disclosure must be completed within 90 days of HMRC acknowledging the notification. The 90-day period does not normally replace the response deadline in the original letter.

Step 2: Tell the accountant or tax adviser promptly

Do not wait until the response deadline is close.

Send the adviser:

A complete copy of the letter
Every enclosure
The envelope if it shows the posting date
Any previous HMRC correspondence on the same issue
Relevant tax returns and tax calculations
A list of properties owned during the period
Details of any properties sold, transferred or inherited

Early review allows time to recover records, clarify ownership and contact HMRC if a realistic extension is required.

Professional advice should be independent and based on the facts. The landlord remains responsible for ensuring that any response, return or disclosure is complete and correct.

Step 3: Do not sign a broad declaration before checking the records

Some nudge letters include a certificate or declaration offering options such as:

My tax affairs are correct
I need to bring my tax affairs up to date
I have made a disclosure

The wording should be read carefully.

Signing an unqualified statement that all tax affairs are correct may cover more than the single property or year the landlord first considered. If an omission is discovered later, the signed statement may become relevant to HMRC's view of the taxpayer's behaviour.

The landlord should not guess, sign for convenience or choose the least alarming option.

The correct approach is to complete enough review work to support the declaration. Where the wording is wider than the review reasonably undertaken, professional advice should be obtained before it is signed.

Step 4: Preserve the records

Do not delete, amend or manufacture evidence.

Preserve:

Tenancy agreements
Rent schedules
Letting-agent and property-manager statements
Bank statements
Mortgage statements
Online-platform reports
Booking and payout records
Service charge and ground-rent statements
Insurance documents
Repair and maintenance invoices
Utility and Council Tax records
Deposit records
Ownership documents
Declarations of trust
Form 17 declarations and acknowledgements
Property purchase and sale completion statements
Non-resident landlord certificates
Earlier tax returns, computations and working papers
Emails explaining periods of vacancy, private use or changes of tenant

HMRC's rental-income guidance says that Self Assessment property records generally need to be retained for at least five years after the 31 January filing deadline for the relevant return.

Older documents may still be required where an earlier period has to be disclosed. If records are incomplete, the landlord should make reasonable efforts to obtain replacements and document any estimation method used.

Step 5: Establish who was taxable on the income

The person who owns the legal title is not always the only person taxable on the rent.

Review:

Legal ownership
Beneficial ownership
Any declaration of trust
Joint-ownership percentages
Whether the owners were married or civil partners living together
Whether a valid Form 17 declaration applied
Whether the property belonged to an individual, partnership, company, trust or estate
Whether an individual received the rent as agent for someone else
The dates on which ownership changed

This work is essential in jointly owned property cases.

HMRC requires each taxpayer to report their own taxable share. Where two joint owners have undisclosed residential rent and use the Let Property Campaign, each person normally needs a separate notification and disclosure.

A landlord should not move all of the historic profit to the lower-rate taxpayer merely because the rent was paid into that person's bank account.

Step 6: Reconstruct the gross rental income

Start with gross income, not the net amount transferred by the letting agent or booking platform.

For each property and tax year, reconcile:

Contracted rent
Rent actually received
Arrears and bad debts
Agent deductions
Management fees
Platform commissions
Cleaning and service charges paid by guests
Refunds and cancellations
Retained deposits
Insurance or compensation receipts connected with the letting
Payments made directly to a mortgage lender or supplier on the landlord's behalf
Tax deducted under the Non-resident Landlords Scheme

For example, if an agent collects £1,200 rent, deducts £120 commission and transfers £1,080, the starting point is normally £1,200 gross rent and £120 agent fees. Reporting only the £1,080 bank receipt understates both income and expenditure.

The basis of accounting used for the relevant year must also be considered. The cash basis applies automatically to many unincorporated property businesses, but there are exceptions and elections. A multi-year review must apply the rules that operated in each year.

Step 7: Review expenses and reliefs correctly

Undeclared rent does not mean the whole amount is taxable profit.

The landlord may be entitled to deductions or relief for items such as:

Letting-agent fees
Property-management fees
Insurance
Repairs and maintenance
Replacement of domestic items, subject to the detailed rules
Service charges and ground rent
Accountancy costs relating to the property business
Utilities and Council Tax paid by the landlord
Advertising and tenant-finding costs
Legal costs of certain short-term tenancy matters
Qualifying travel and administrative costs

However, common errors include:

Deducting mortgage capital repayments
Treating all mortgage interest as a normal expense under the current residential finance-cost rules
Claiming improvements as repairs
Claiming private or owner-occupation costs
Deducting the purchase price or deposit
Claiming the same expense twice
Claiming expenditure already reimbursed
Using the £1,000 property allowance as well as actual expenses
Assuming Rent a Room relief applies to any room or short-term letting
Ignoring the different historical finance-cost rules in earlier years

The review should calculate the correct taxable profit or loss for each year. It should not simply estimate tax as a percentage of gross rent.

Step 8: Compare the correct figures with what was reported

Prepare a year-by-year reconciliation showing:

Correct gross rental income
Correct allowable expenses
Property allowance or Rent a Room treatment, if applicable
Correct finance-cost treatment
Rental profit or loss
Amount previously reported
Difference in taxable profit
Other taxable income in that year
Personal Allowance and tax-band effect
Tax already paid or deducted
Additional Income Tax due
Interest
Potential penalties

Rental profit cannot be reviewed in isolation from the landlord's other income.

An additional £5,000 of rental profit may be taxed differently depending on whether the landlord had employment income, pension income, dividends, savings income, losses, the High Income Child Benefit Charge or restrictions to their Personal Allowance.

The correction may also affect student loan repayments, tax credits, means-tested liabilities or other calculations.

Step 9: Choose the correct correction or disclosure route

This is one of the most important decisions.

The original return was correct

Reply by the method stated in the letter, explain why no correction is due and retain the supporting evidence.

Income arose in the current tax year

Register for the appropriate reporting system if required, keep records and report the income on the correct return. Do not automatically include it in an older-year disclosure.

A return is outstanding

File the required return with complete property pages rather than assuming a disclosure replaces it.

A filed return is still within the amendment window

Amend the return. A Self Assessment return can normally be amended within 12 months of the statutory filing date.

Older unpaid residential property tax for an individual

Where no formal enquiry prevents its use, consider the Let Property Campaign and follow the instructions in the nudge letter.

HMRC has already opened a formal enquiry or compliance check

Disclose through the named officer. HMRC says a Let Property Campaign disclosure is unlikely to be accepted where it notified its intention to open a check before the campaign notification.

The landlord is a company or trust, or the income relates only to commercial property

Use the appropriate return correction or general disclosure route. The Let Property Campaign does not cover companies, trusts or landlords letting only non-residential property.

Offshore property income or another offshore matter is involved

Obtain specialist advice and follow the facility or officer specified by HMRC. Offshore time limits and penalties can differ significantly.

HMRC's current Let Property Campaign guidance distinguishes recent returns from older-year disclosures. It says current-year income should be reported on the appropriate return, the preceding year's position should normally be handled through a return or amendment, and qualifying older unpaid tax may be dealt with through the campaign.

The campaign requires a notification first. Once HMRC acknowledges that notification, the landlord normally has 90 days to submit the disclosure and pay the amount due, or agree payment arrangements by the deadline.

Notifying the campaign before the calculations are complete can start the 90-day clock. The work should begin promptly, but the notification date should also be planned realistically.

Step 10: Prepare a complete response

The response should directly answer what HMRC asked.

Where no tax is due, it may explain:

Why the property was not let
Why the taxpayer was not beneficially entitled to the income
Where and how the income was already reported
How the joint-ownership split was calculated
Why an exemption or relief applied
Why the property business made a tax loss
Why third-party data does not represent taxable rent

Where a correction or disclosure is needed, the response should normally identify:

The route being used
The tax years affected
Whether returns have been filed or amended
Whether a disclosure has been notified
The relevant reference numbers
Any reasonable extension requested
The expected next step

Do not send a large bundle of unrelated personal records merely to appear co-operative. Provide what the letter requires and what is necessary to support the conclusion.

If HMRC requests further information, the landlord or adviser should consider whether the request is informal or made under a formal information notice and respond accordingly.

Step 11: Keep evidence of the response

Retain:

The final signed response
Supporting calculations
Copies of amended returns
Disclosure notification and acknowledgement
Disclosure and payment reference numbers
Proof of posting or electronic submission
Payment evidence
HMRC acknowledgements
Notes of telephone calls, including date, time and adviser name
Evidence supporting ownership, vacancy or relief claims

If HMRC does not acknowledge a response within a reasonable period, follow up using the contact details for the relevant team.

Does a nudge letter make a disclosure "prompted"?

Often, yes.

For penalty purposes, HMRC distinguishes between an unprompted disclosure and a prompted disclosure.

An unprompted disclosure is generally made before the taxpayer has reason to believe that HMRC has discovered, or is about to discover, the problem. A disclosure made at any other time is prompted.

Where HMRC has written specifically about possible undeclared rent, the landlord will normally have reason to believe that HMRC is aware of the risk. A later disclosure of that same issue is therefore likely to be treated as prompted, even though the nudge letter was not itself a formal compliance check.

The distinction affects the minimum penalty percentage.

It does not mean that co-operation is pointless. The quality and speed of the response still matter. HMRC describes penalty mitigation as telling, helping and giving access to records.

These include:

Explaining what went wrong and why
Identifying the full extent of the issue promptly
Answering questions accurately
Helping HMRC understand the calculations
Checking records rather than waiting for HMRC to quantify the omission
Providing relevant documents without unnecessary delay

A landlord who responds fully after a nudge letter may obtain a better penalty outcome than one who ignores the letter and waits for a formal enquiry.

What tax, interest and penalties could be due?

Where the review identifies an underpayment, the total settlement may include:

Additional tax
Late-payment interest
A penalty, where the legal conditions are met
Late-filing penalties for outstanding returns, where applicable
Other liabilities affected by the corrected income

Additional tax

The tax must be calculated separately for each year using the law, allowances and tax rates applying to that year.

Historical changes are particularly important for residential finance costs. Using the current rules for every earlier year may produce the wrong answer.

Interest

Interest is compensatory rather than behaviour-based. HMRC charges it from the date the tax should have been paid until the date it is paid.

Even a landlord who took reasonable care and is not charged a penalty may still owe interest on late tax.

Penalties where a return was inaccurate

If a return was filed but understated the tax, HMRC may consider an inaccuracy penalty.

The current onshore penalty ranges in HMRC's CC/FS7A factsheet are:

Reasonable care: No penalty for either an unprompted or prompted disclosure
Careless: 0% to 30% for an unprompted disclosure, or 15% to 30% for a prompted disclosure
Deliberate: 20% to 70% for an unprompted disclosure, or 35% to 70% for a prompted disclosure
Deliberate and concealed: 30% to 100% for an unprompted disclosure, or 50% to 100% for a prompted disclosure

The percentage is applied to the potential lost revenue, broadly the tax put at risk by the inaccuracy.

Penalties where the landlord failed to notify HMRC

A different penalty framework may apply where the landlord did not tell HMRC that they had become liable to tax.

The current onshore ranges in HMRC's failure-to-notify factsheet include:

Non-deliberate and disclosed within 12 months of the tax becoming due: 0% to 30% for an unprompted disclosure, or 10% to 30% for a prompted disclosure
Non-deliberate and disclosed 12 months or more after the tax became due: 10% to 30% for an unprompted disclosure, or 20% to 30% for a prompted disclosure
Deliberate: 20% to 70% for an unprompted disclosure, or 35% to 70% for a prompted disclosure
Deliberate and concealed: 30% to 100% for an unprompted disclosure, or 50% to 100% for a prompted disclosure

If a taxpayer has a reasonable excuse for a non-deliberate failure to notify and acts without unreasonable delay after the excuse ends, HMRC may not charge a failure-to-notify penalty.

These ranges do not determine the final penalty automatically.

The result depends on:

Whether the correct penalty regime is failure to notify or inaccuracy
Whether there is potential lost revenue
The taxpayer's behaviour
Whether the disclosure is prompted
The quality and timing of the disclosure
Any reasonable excuse
Any special circumstances
Whether the income or gain is onshore or offshore
Whether more than one penalty could otherwise apply to the same tax

HMRC's Let Property Campaign guidance states that penalties can be up to 100% of the UK tax liability and up to 200% for an offshore liability. Offshore cases require separate advice because territory categories, extended assessment periods and additional regimes may affect the result.

How far back can HMRC look?

There is no single answer for every landlord.

The relevant period depends on the failure and the taxpayer's behaviour.

HMRC's general assessment framework includes:

A normal limit of up to 4 years
Up to 6 years where tax was lost because of careless behaviour
Up to 12 years for certain offshore matters or transfers where the behaviour was not deliberate
Up to 20 years for deliberate behaviour and certain failures to notify

HMRC's Let Property Campaign guidance says a landlord who registered on time and took reasonable care may need to correct a maximum of four years, while careless errors can extend to six years and deliberate cases can extend to twenty years. It also says a landlord who failed to register for Self Assessment by the appropriate deadline may need to pay what is due for a maximum of twenty years.

These are maximum assessment or disclosure periods, not an assumption that every case will automatically cover the full period.

The precise years also depend on the current date, statutory deadlines, whether returns were filed and whether HMRC already made a valid assessment.

What if the landlord believes the tax return is correct?

The landlord should still respond.

The aim is to show clearly why HMRC's apparent risk does not produce additional tax.

A good "no correction required" response may include:

A concise explanation of the facts
The relevant property address and ownership period
The identity of the person who reported the income
The tax return box or schedule in which it was included
A reconciliation from agent or platform statements to the return
Evidence of a valid ownership split
Evidence that the property was not let
Evidence supporting a loss, exemption or relief

The response should be proportionate.

For example, if HMRC believes a jointly owned property was omitted from one spouse's return, it may not be enough to say, "My spouse declared it." The couple should check whether the legal tax split actually permitted all of the income to be reported by one spouse.

Similarly, saying that the property made no cash profit is not proof that there was no taxable profit. Mortgage capital repayments are not deductible, and individual residential finance costs are subject to specific rules.

What if the landlord discovers an error?

Do not respond with a rough figure merely to meet the deadline.

If time is short, the landlord or adviser should contact the HMRC team, explain that a full review is underway and request a reasonable extension where appropriate. HMRC is not required to agree every request, so the request should be made before the deadline and supported by a realistic timetable.

The review should then determine:

Every affected property
Every affected year
The correct taxpayer
Gross income
Allowable expenses
Reliefs and losses
The tax difference
Interest
The appropriate penalty position
The correct correction or disclosure route

If the Let Property Campaign applies, the landlord must first notify HMRC of the intention to disclose. HMRC then issues a disclosure reference number and payment reference. The disclosure and payment, or agreed payment arrangements, are normally required within 90 days of HMRC's notification acknowledgement.

HMRC says that materially incorrect or incomplete disclosures may not be accepted and can lead to significantly higher penalties. A nudge letter should therefore prompt speed, but not careless calculation.

What if the landlord cannot pay the full amount?

An inability to pay does not remove the need to respond or disclose.

Under the Let Property Campaign, HMRC says the landlord should contact it before submitting the disclosure if the full amount cannot be paid. Payment arrangements must be agreed by the disclosure deadline if the campaign terms are to be maintained.

HMRC may ask for details of:

Income and expenditure
Bank balances
Properties and other assets
Mortgages, loans and credit cards
The amount that can be paid immediately
A realistic monthly payment proposal

The landlord should not understate the disclosure to make the bill affordable. Tax calculations and payment arrangements are separate issues.

Common mistakes when responding to a nudge letter

Ignoring the letter because it is not a formal enquiry

A One to Many letter may not be a formal check, but HMRC has identified a risk. Non-response can lead to follow-up action or a compliance check.

Assuming the letter proves tax is due

HMRC data can be incomplete. The landlord should test the facts and challenge an incorrect assumption with evidence.

Signing the declaration immediately

A broad certificate should not be signed until the scope of the statement has been reviewed.

Correcting only the year mentioned

The identified year may be a signal of a wider issue. All relevant properties and years should be checked.

Reporting net agent or platform payouts as income

Gross rent and separate fees usually need to be identified.

Treating mortgage payments as deductible expenditure

Capital repayments are not deductible. Finance costs for individual residential landlords have their own rules.

Using the wrong disclosure route

Current returns, amendments, older-year disclosures and formal enquiries are not interchangeable.

Assuming a joint owner can declare all the income

Tax follows the applicable ownership and income-entitlement rules, not simply the bank account used.

Making a partial disclosure

The Let Property Campaign requires a complete disclosure of relevant undeclared liabilities. HMRC may reject a materially incomplete submission.

Waiting until the deadline to find an adviser

Historic agent statements, bank statements and mortgage records can take time to obtain.

Failing to deal with current and future years

Correcting older tax does not automatically correct outstanding returns or future reporting.

Example 1: The letter is based on ownership, but the property was not let

Amira receives a nudge letter because HMRC believes she may have received income from a second property.

The property was purchased for an elderly parent, who occupied it rent-free. Amira received no rent or service payments.

She should not invent a rental business or make an unnecessary disclosure.

She should respond by the deadline and explain the occupation arrangement. Appropriate supporting evidence may include bank statements, Council Tax records and evidence of the parent's occupation.

The response should be limited to the facts and should not make a wider declaration without reviewing its wording.

Example 2: A landlord reported only the agent's net payments

Daniel's agent collected £18,000 of rent and deducted £1,800 of management fees. Daniel reported only the £16,200 paid into his bank account.

The original return understated both income and expenses by £1,800. If the agent fees were fully allowable, the rental profit may be unchanged.

There may be no additional tax from that particular difference, but Daniel must still check whether:

Other agent deductions were allowable
Any rent was retained for repairs or paid directly to suppliers
The return's gross-income figure was required for another tax purpose
The error affected the property allowance or another threshold
The same method caused omissions in other years

A data mismatch does not always equal unpaid tax, but it still requires reconciliation.

Example 3: A jointly owned property was reported by only one spouse

Priya and James jointly own a rental property and live together as a married couple. All rent is paid into Priya's account, and she reported all of the profit on her return.

Unless an exception applies, married couples and civil partners living together are generally taxed equally on income from jointly owned property. A valid Form 17 declaration can apply only where the beneficial interests are unequal and the detailed requirements are met.

The destination of the rent does not by itself change the tax split.

Both returns and the ownership documents should be reviewed. If both individuals have underpaid or overpaid tax, the corrections should be coordinated but made for each taxpayer separately.

Example 4: The landlord has never registered for Self Assessment

Marcus rented out his former home for five years while working full-time under PAYE. He assumed the letting agent dealt with tax and did not register for Self Assessment.

The nudge letter means that a disclosure is likely to be prompted.

Marcus needs to reconstruct each year, including gross rent, allowable expenses, residential finance costs and other income. Because he did not notify HMRC of his liability, the failure-to-notify rules and extended disclosure period may apply.

He should not simply total five years of bank receipts and apply his current tax rate. Each year must be calculated separately.

Example 5: Short-term letting income was reported incompletely

Leah lets an apartment through more than one online platform. She included transfers from one platform but omitted a second platform and direct bookings.

The review must combine:

Gross booking income
Cleaning and other guest charges
Platform commissions
Refunds
Direct payments
Property expenses
Periods of private use

The abolition of the furnished holiday lettings tax regime from April 2025 does not make short-term letting income tax-free. The rules applying to each historic year must be used.

If the income creates VAT concerns or involves a company rather than an individual landlord, separate advice may also be required.

How can landlords reduce the risk of future nudge letters?

A reliable property-accounting process should include:

Separate records for every property
Monthly reconciliation of rent to agent and platform statements
Recording gross income and fees separately
Retaining invoices and receipts
Separating repairs from improvements
Separating mortgage interest from capital repayments
Reviewing ownership and income splits before filing
Keeping Form 17 and trust documentation with the tax records
Monitoring the £1,000 property allowance conditions
Reviewing Rent a Room claims
Keeping UK and overseas property records separate
Completing annual Non-resident Landlords Scheme checks where relevant
Reviewing property sales for Capital Gains Tax reporting
Checking Making Tax Digital for Income Tax obligations
Comparing the draft tax return with the property records before approval

From 6 April 2026, Making Tax Digital for Income Tax applies to qualifying individual landlords and sole traders whose total qualifying gross income exceeded £50,000 in the relevant reference year, subject to the detailed eligibility and exemption rules. The threshold is scheduled to extend to qualifying income above £30,000 from April 2027 and above £20,000 from April 2028.

Digital reporting does not prove that the records are correct. Landlords still need to reconcile income, classify expenses and apply the correct tax treatment.

Frequently asked questions

Does a nudge letter mean HMRC is investigating me?

Not necessarily.

HMRC says a One to Many nudge letter is not itself a compliance check. The actual letter must still be reviewed because it may refer to a formal check, contain an information notice or follow an earlier enquiry.

Does HMRC already know exactly how much rent I received?

Not necessarily.

HMRC may have third-party information showing ownership or payments, but it may not know the complete facts, expenses, ownership split or relief position. The landlord should reconcile the available records rather than assume HMRC's data is either complete or worthless.

Can I ignore the letter if I believe my return is correct?

No.

Respond by the deadline, explain why no correction is required and keep the evidence supporting that conclusion.

Should I telephone HMRC immediately?

First read the whole letter and gather enough information to avoid giving an inaccurate or incomplete explanation. If the deadline is close, a prompt call may be needed to confirm receipt or request time, but important technical explanations are usually better supported in writing.

Should I sign the enclosed certificate?

Only after understanding its scope and checking the relevant tax affairs. Do not sign a broad declaration merely because none of the available boxes appears to fit perfectly.

Is a disclosure after a nudge letter still voluntary?

The taxpayer is still coming forward with the calculations, but the disclosure is likely to be classed as prompted for penalty purposes if the letter shows that HMRC has identified the same risk.

Can I use the Let Property Campaign after receiving a nudge letter?

Often, yes, if the taxpayer and income are eligible and HMRC has not already opened a formal check that prevents the campaign from being accepted. Follow the specific instructions in the letter and do not assume the campaign is available in every case.

Can a limited company use the Let Property Campaign?

No. The campaign does not cover companies. The company may need to amend a Corporation Tax return or use another disclosure route.

Can a trust use the Let Property Campaign?

No. Trusts are outside the campaign. The trustees should use the correct trust-return or disclosure procedure.

What if the property is jointly owned?

Review each person's legal and beneficial entitlement. Each taxpayer is responsible for their own return. If two individuals need to use the Let Property Campaign, HMRC normally requires separate notifications and disclosures.

What if the property made a loss?

A genuine tax loss may mean no additional tax is due for that year, but the income and expenses must still be calculated correctly. The loss may affect later property profits and may need to be reported through the appropriate return route.

What if the rental income was below £1,000?

The property allowance may exempt up to £1,000 of an individual's qualifying gross property income, but exclusions apply. The threshold relates to the individual's relevant property income, not a separate £1,000 for each property.

What if the property was rented through Airbnb or another platform?

Platform income is still property income or trading income depending on the precise facts. The landlord should reconcile gross bookings, fees, refunds, cleaning charges and direct bookings. A platform payout is not automatically the correct taxable income figure.

What if I live abroad?

UK rental income can remain taxable in the UK. Approval to receive rent without deduction under the Non-resident Landlords Scheme does not make the income tax-free. Residence, double-tax relief and any overseas income should be reviewed separately.

Can HMRC go back twenty years?

In certain cases, yes, particularly for deliberate behaviour or some failures to notify. Four, six and twelve-year limits apply in other circumstances. The correct period depends on the facts and legislation.

What if records are missing?

Request replacement statements from banks, agents, platforms, mortgage providers and suppliers. Reasonable estimates may sometimes be necessary, but the basis should be documented and supported by the best evidence available.

What if I cannot pay?

Do not ignore the disclosure. Calculate the correct liability and contact HMRC before the applicable deadline to discuss payment arrangements. Understating the liability is not a substitute for a payment plan.

Will replying prevent a later compliance check?

Not necessarily.

HMRC may accept the explanation or disclosure, ask further questions or open a formal check. A complete, well-evidenced response reduces uncertainty but does not remove HMRC's statutory powers.

The right response is evidence-led and proportionate

An HMRC nudge letter should be treated as a serious opportunity to review the position before the matter escalates.

The landlord should establish:

Whether the letter is genuine
Whether it is an informal prompt, formal check or information notice
What HMRC appears to know
Which properties and years are within scope
Who was taxable on the income
Whether the figures already reported were correct
Whether a return, amendment or disclosure is required
Whether the Let Property Campaign remains available
What tax, interest and penalty may be due
What evidence supports the response

The response should not be based on fear, convenience or an assumption that HMRC must be right.

Equally, the landlord should not dismiss the letter because it is called a nudge rather than an enquiry.

HMRC already has a reason to ask the question. A careful and prompt review gives the landlord the best opportunity to correct genuine errors, explain an accurate return and reduce the risk of higher penalties or a wider investigation.

Speak to PR Accountants Ltd

PR Accountants Ltd helps landlords review and respond to HMRC nudge letters and correct historic property-tax issues.

Our support can include:

Reviewing the status and scope of the HMRC letter
Checking whether the letter is consistent with HMRC records and known campaigns
Reconstructing gross rental income and allowable expenses
Reconciling letting-agent and online-platform statements
Reviewing joint ownership, beneficial interests and Form 17 treatment
Applying the correct historical residential finance-cost rules
Reviewing property allowance and Rent a Room relief
Checking filed and outstanding Self Assessment returns
Preparing return amendments
Preparing Let Property Campaign disclosures
Calculating tax, interest and penalties
Drafting the response to HMRC
Dealing with the HMRC officer or campaign team as agent
Establishing accurate records for future returns and Making Tax Digital

The earlier the letter is reviewed, the more time there is to obtain records, identify the correct route and respond before the deadline.

PR Accountants Ltd
Email: info@praccounting.co.uk
Telephone: 0330 043 0792
Website: www.praccounting.co.uk

This article provides general information and does not constitute personalised tax, accounting, legal or financial advice. The status of an HMRC letter, disclosure route, assessment period, penalty and tax treatment depend on the precise facts and the law applying to each year. Serious or deliberate cases may require specialist legal advice.