Let Property Campaign Accountant

Tell HMRC about any rental income you haven’t previously disclosed without facing harsh penalties. We help landlords voluntarily disclose income through the Let Property Campaign.
Let Property Campaign accountant
What’s in this post?
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    The decision, before anything else

    Come forward before HMRC writes to you. An unprompted disclosure carries a lower penalty range than a prompted one in every behaviour band, and in the careless band the unprompted range starts at nothing. The moment a letter about rental income arrives, that lower range is gone.

    0%

    where an unprompted careless disclosure can start

    90 days

    from HMRC’s acknowledgement to submit and pay

    20 yrs

    how far back HMRC reaches where behaviour was deliberate

    +4%

    interest above base rate, running since 6 April 2025

    15MINS

    Free, and no obligation

    Not sure whether the campaign is even your route? Book the free 15 minute call and Total Books will tell you which facility applies before anything is notified.

    Or phone 029 2002 6505. Cardiff, Newport, Bristol and UK wide.

    If you want an answer today

    Talk it through, free, for 15 minutes

    Which facility applies, how many years are in scope, and what the first fortnight looks like. No documents needed on the call.

    Book the call

    If you would rather not speak yet

    Run the two minute check first

    Six questions, no email address, and it tells you which HMRC route you are looking at and how urgent it is.

    Start the check

    Come forward before HMRC writes to you. The penalty range for an unprompted disclosure starts at nothing, and it closes the day their letter lands on your mat.

    That is the whole decision, and most landlords who find this page are still on the wrong side of it. You never told HMRC. There are years of rent nobody declared, on a flat you could not sell, or a house you inherited, or the place you moved out of and let rather than lose. You thought it was too small to matter. You did not think of yourself as a landlord. You put off dealing with it, and interest has been running the whole time. Then a letter arrived, or a headline did, and now the brown envelope is on the kitchen table and it has been there four days.

    Total Books is a Let Property Campaign accountant for landlords in exactly that position, working from offices in Cardiff, Newport and Bristol and across the UK. We rebuild the years from your bank statements, rent book and tenancy agreements, calculate the tax properly, word the disclosure so the reductions you have earned are on the table, and deal with HMRC so you do not have to.

    Total Books is a regulated, advisory led practice, not a cheap filing service, and on this work that distinction matters: you talk to a person, not a chatbot, and the person you talk to is the one doing the work.

    What is the Let Property Campaign?

    The Let Property Campaign is HMRC's disclosure route for individual landlords who have undeclared income from residential letting. You will see it called an amnesty, and although HMRC does not use that word, the reason people reach for it is fair enough: come forward yourself and the penalty starts at the bottom of the range instead of the top.

    If you make a profit from renting out residential property, you have to tell HMRC. Plenty of landlords have not, and usually not on purpose. You inherited a house and let it out. You moved in with a partner and kept the old flat on. You did not realise a spare room over the allowance counted at all. The campaign exists for exactly those situations, and it is designed to be used rather than feared.

    1

    You tell HMRC

    You notify HMRC that you intend to disclose. Nothing is calculated yet, and nothing is admitted beyond your intention to put it right.

    2

    HMRC issues your reference

    You receive a disclosure reference number. From that point the clock is running and the terms are the campaign's, not an enquiry's.

    3

    You have 90 days

    You work out the tax, the interest and the penalty for every year involved, then make a formal offer to HMRC.

    It is not a write-off. You pay the tax, you pay interest, and you pay a penalty at a percentage you propose and justify. What the campaign gives you is the chance to set that percentage yourself, from the bottom of the range, instead of having it set for you at the top.

    Is the Let Property Campaign still running? Yes. It opened in 2013, HMRC has never published a closing date, and the campaign is still running today. HMRC's own Let Property Campaign guidance has been updated as recently as April 2026, which is not what a facility being wound down looks like. HMRC has closed campaigns at short notice before, so treat the position as available rather than permanent.

    Who does the Let Property Campaign benefit?

    It benefits any individual landlord who has not paid enough tax on property income, and it covers more letting situations than most landlords expect. If you have previously missed tax on rent, this is the least stressful route to putting it right.

    • Residential property landlords
    • Holiday lets and Airbnb hosts
    • Spare room rentals above the tax free threshold
    • UK landlords living abroad
    • Guaranteed rent paid through a letting agent

    Not sure whether you fit one of these? That is the normal starting point, and it is the part we do first. We work out what is actually owed across the years involved, then tell you where you stand before anything is sent to HMRC. There is more on eligibility under can you use it, and on the wider HMRC routes in our guide to which HMRC disclosure route applies.

    Total Books, helping you declare rental income

    Undeclared rental income is fixable, and it is more routine than it feels from where you are sitting. Landlords come to Total Books at four points, and the right next step is different at each one.

    • A nudge letter has arrived from HMRC about rental income. Do not ignore it. The reply date is real and the first response shapes everything after it
    • You know rent was not fully declared. You are still unprompted, which is the cheaper position, and it lasts only until HMRC writes
    • Records are missing or incomplete. No rent book, gaps in the tenancy agreements, a managing agent who has moved on. Reasonable estimates are accepted, provided you can show how you built them
    • You cannot pay everything at once. Time to Pay is arranged before the disclosure goes in, not after

    Every one of those is a Let Property Campaign disclosure. What changes is the order of the work and how much time you have.

    Should you come forward, or wait and see if HMRC contacts you?

    Come forward. An unprompted disclosure, made before HMRC contacts you about it, carries a lower penalty range than a prompted one in every behaviour band, and in the careless band the unprompted minimum is nothing at all.

    Here is what that difference is worth. These are the statutory ranges HMRC works within, set by Schedule 24 Finance Act 2007 for an inaccurate return and Schedule 41 Finance Act 2008 for failing to tell HMRC you had income at all.

    BehaviourUnpromptedPrompted
    Careless, or a reasonable excuse that ran out0 to 30 per cent15 to 30 per cent
    Deliberate20 to 70 per cent35 to 70 per cent
    Deliberate and concealed30 to 100 per cent50 to 100 per cent

    The moment a nudge letter about rental income arrives, the left hand column is gone. Not reduced. Gone. That is the single most expensive thing about waiting, and it is why Total Books tells landlords who are still undecided to make the decision this week rather than next quarter.

    A Let Property Campaign prompted disclosure is not a different facility, it is the same one at a worse price. Read the longer comparison in our guide to prompted and voluntary disclosure for landlords.

    The number that moves

    Coming forward first is worth the whole left hand edge of the bar

    HMRC penalty ranges as a percentage of the tax, under Schedule 24 Finance Act 2007 and Schedule 41 Finance Act 2008.

    0%25%50%75%100%

    Careless

    Unprompted0 to 30 per cent

    Prompted15 to 30 per cent

    Deliberate

    Unprompted20 to 70 per cent

    Prompted35 to 70 per cent

    Deliberate and concealed

    Unprompted30 to 100 per cent

    Prompted50 to 100 per cent

    Unprompted, before HMRC writesPrompted, after a letter arrives

    The bars are the statutory ranges. Where you land inside one is decided by telling, helping and giving access, which is the part an adviser can actually move.

    Still unprompted? That is the cheapest position you will ever be in, and it lasts until the letter arrives. Or call 029 2002 6505.

    Use the window while you have it

    Where do you stand right now?

    Most landlords contact Total Books when uncertainty turns into pressure. Sometimes that starts with a quiet realisation, sometimes with a letter. The right next step depends entirely on which of those it is, so answer six questions and the page will tell you.

    Two minute check, no email address

    Six questions, and it tells you which HMRC route you are looking at and how urgent it is.

    Has HMRC written to you about rental income?

    Or skip it and ask directly. The free 15 minute call answers the same six questions with a person on the other end.

    Ask a human instead

    Your result

    Your recommendation appears here.

    Can you use it?

    The campaign is for individuals with income from residential property. That covers most of the people who contact us: one buy to let, an inherited house, a former home let after a move, a small portfolio, a room let beyond the Rent a Room threshold, and Airbnb or short let income.

    It does not cover everything, and using the wrong facility costs you the 90 days you thought you had.

    • A company, a trust or a partnership goes through the Digital Disclosure Service instead
    • Commercial property goes through the Digital Disclosure Service
    • Anything with an offshore element, including a property abroad or income paid to an overseas account, belongs in the Worldwide Disclosure Facility
    • Deliberate behaviour you want protection against prosecution for belongs in Code of Practice 9, and nowhere else

    Total Books works out which one applies before anything is notified. If it is not the campaign, we say so on the first call, even when that means the work goes elsewhere. Our Digital Disclosure Service page covers the wider route, and the full comparison sits in which HMRC disclosure route applies to you.

    A shelf of plain archive box files running along a wall, standing for the years of rental records a Let Property Campaign disclosure has to reach back over

    Four years, six or twenty. Which shelf you are reaching back to is decided by behaviour, not by the letting history.

    How far back can HMRC go under the Let Property Campaign?

    Four, six or twenty years, and which one applies is decided by your behaviour, not by how long the property has been let. That is the answer to how many years you have to disclose, and it is the question landlords get wrong most often.

    Your behaviourYears HMRC can assess
    You took reasonable care and still got it wrong4 years
    You were careless6 years
    It was deliberate20 years

    In our casework, landlords who assume four years are usually in the six year band, because "I did not know I had to" reads as careless rather than reasonable care once rent has been landing in a current account for years. Getting this wrong understates the disclosure, and an understated disclosure is the one HMRC comes back on.

    If the property has been let for longer than the window, you disclose the years inside the window. You do not have to go back to the beginning of time.

    How far back it goes

    Your behaviour sets the window, not how long you have been letting

    The assessment window HMRC can reach back over, once a disclosure is on the table.

    You took reasonable care and still got it wrong
    4 years
    You were careless, which includes not knowing you had to declare
    6 years
    It was deliberate
    20 years

    In our casework, landlords who assume the four year band are usually in the six. Understating the window is the fastest way to have a disclosure reopened.

    Not sure which band describes you? Categorising it honestly is what earns the reduction, and getting it wrong costs more than admitting it. Or call 029 2002 6505.

    Get your band assessed

    What is the Let Property Campaign penalty, and how is it worked out?

    The Let Property Campaign penalty is a percentage of the tax, taken from the ranges above and reduced by how much you help HMRC. There are three reductions and they are worth up to the full range between the minimum and the maximum.

    • Telling, worth up to 30 per cent of the reduction. Admitting it fully, and early
    • Helping, worth up to 40 per cent. Doing the work rather than leaving HMRC to do it
    • Giving access, worth up to 30 per cent. Producing records when asked

    This is the part that is in your control, and it is most of what an adviser is for. A disclosure pack that arrives complete, with a year by year schedule, the behaviour honestly categorised and the reasoning written down, earns reductions that a bare set of numbers does not. It is the difference Total Books is paid to make.

    One thing to be clear about. The reductions apply to the penalty, never to the tax and never to the interest. Anyone telling you a disclosure will reduce the tax you owe is describing something else.

    Interest is usually the bigger number

    Late payment interest has run at the Bank of England base rate plus four percentage points since 6 April 2025, up from base plus 2.5. On rent from eight or ten years ago, compounding quietly the whole time, that adds up to more than the penalty in most of the disclosures we run. Reporting by AccountingWEB on HMRC's campaign figures put interest ahead of penalties by more than twelve to one across 2025/26.

    It is also the one part nobody can negotiate. That is the real argument for starting now rather than in six months, and Total Books would rather say it plainly than let you find out later. Our note on HMRC interest and penalty changes sets out the current rates.

    How does HMRC find out about undeclared rental income?

    From data it already holds, and increasingly from data it is sent automatically. HMRC does not need a tip off to open a landlord case.

    Two sources are confirmed on GOV.UK. Digital platforms have reported seller and host income since the first returns landed on 31 January 2025, which covers short let and holiday let platforms. And HMRC's own policy paper on third party data confirms it already receives information about rents and payments relating to land and property.

    Beyond that, Land Registry feeds, tenancy deposit scheme data, letting agent returns and HMRC's Connect system are widely reported as sources. HMRC has not confirmed them, so treat them as trade press rather than fact.

    The practical point does not depend on which list is right. Undeclared rent surfaces eventually, and it usually surfaces at the worst possible moment: a sale, a remortgage, a probate application, or a Making Tax Digital sign up that makes the filing history visible. Coming forward first is the only version of this you control.

    Before the clock startsAn unopened official envelope on a kitchen table beside house keys and a mug of tea, the morning an HMRC letter about rental income arrives

    The letter is the moment the cheaper penalty range closes. Everything before it is still your choice.

    A prompted disclosure and an unprompted one are the same work. They are not the same price.

    How do you notify HMRC and make the disclosure?

    Two stages, in this order, and the order matters.

    Stage one, notification. A short form telling HMRC you intend to disclose under the campaign. No figures. No explanation. HMRC acknowledges it and issues your disclosure reference number.

    Stage two, the disclosure. From the date on that acknowledgement you have 90 days to submit the full disclosure and make payment, or ask for time to pay. That is the Let Property Campaign deadline that actually binds you, and the 90 day disclosure clock starts at the acknowledgement, not at the notification and not at the day you first worried about it.

    Ninety days sounds generous until you are reconstructing 2016 from bank statements and a rent book. In practice the work is front loaded: the records take the first month, the calculations the second, and the wording and the offer the third. The step by step version, with what HMRC expects at each stage, is in our guide to making a Let Property Campaign disclosure.

    What if your records are missing?

    You disclose anyway, using reasonable estimates, and you show your working.

    HMRC accepts estimated figures where records genuinely no longer exist. What it does not accept is a round number with nothing behind it. A defensible estimate is built from what does survive: bank statements showing rent arriving, the tenancy agreements you still have, a letting agent's annual statements, mortgage interest certificates, and the standing charges that barely move year to year.

    Total Books has rebuilt disclosures from a single current account and a folder of tenancy agreements, filling the gaps with void periods the tenant history confirms and standing charges that barely move. It takes longer and the estimate has to be conservative, but it is a disclosure HMRC accepts. The detail sits in can you submit a disclosure with missing records.

    What you actually pay

    Three parts, and only one of them can be reduced

    The shape of a typical settlement on rent that went undeclared for several years.

    Tax
    Interest
    Penalty

    Tax

    Fixed by the figures. Falls only if the profit was overstated or expenses were missed.

    Interest

    Base rate plus four points since 6 April 2025, running from each year’s due date. Not negotiable.

    Penalty

    The only part in play. Behaviour sets the range, disclosure quality sets the position in it.

    Proportions vary with the years and the rates involved. AccountingWEB, reporting HMRC campaign figures for 2025/26, put interest ahead of penalties by more than twelve to one.

    Every month it waits, the middle block grows. The penalty is what an adviser moves. The interest is what starting now saves. Or call 029 2002 6505.

    Stop the interest clock

    What if you cannot pay it all at once?

    You call the HMRC helpline about payment before you submit the disclosure, not after.

    This is the ordering most pages get wrong and it costs people money. The disclosure asks you to pay in full at the point you make the offer. If you know you cannot, you agree a Time to Pay arrangement first, then submit the disclosure referencing it. Doing it the other way round means submitting an offer you cannot honour, which is a worse position than asking in advance.

    Time to Pay is not a favour and it is not a black mark. It is a normal arrangement, and HMRC agrees them routinely where the numbers and the household budget support the instalments.

    Bank statements and tenancy paperwork sorted into year by year piles on an accountant desk while a Let Property Campaign disclosure is rebuiltYear by year

    Let Property Campaign

    Ninety days is enough time, if the first thirty are spent on records

    Total Books rebuilds each year from what survives, then calculates rather than estimates wherever the paperwork allows it.

    What happens after HMRC accepts it?

    Total Books submits, and HMRC either accepts the offer or comes back with questions. Acceptance forms a contract settlement: the years are closed, the liability is fixed, and the matter is finished.

    Then you go back to ordinary Self Assessment, with your UTR, the return, and nothing hanging over it. If your gross property income takes you over the Making Tax Digital thresholds, that means digital records and quarterly updates from your start date, which the Total Books MTD ITSA service handles alongside the return. Landlords who have been through a disclosure want the following years to be boring, and that is a reasonable thing to want. Our Virtual Finance Office runs them that way, through a secure client portal, wherever in the UK you are.

    Reading this because a letter arrived? That one changes the timetable, and the first reply matters more than the rest of it.

    Get the reply right

    Can you still be prosecuted?

    Yes. The Let Property Campaign gives you no immunity from prosecution, and any page telling you otherwise is wrong.

    In practice HMRC prosecutes a very small number of cases and they are at the deliberate and concealed end. But the campaign is a disclosure facility, not a shield, and the only route that carries a contractual assurance against criminal investigation for the conduct disclosed is Code of Practice 9, the Contractual Disclosure Facility.

    If that is your situation, say so on the first call. Total Books will route you to the right facility and, where it needs a specialist, tell you that too. Coming to us and being sent somewhere better is a good outcome. Notifying under the wrong facility is not. This is also the point at which we will not help: Total Books checks planning against HMRC Spotlight guidance and does not use aggressive schemes, and a disclosure is not a place to start.

    What if the property or the landlord is overseas?

    Then the campaign is probably the wrong door. An offshore element pushes the disclosure into the Worldwide Disclosure Facility, where the penalty ranges are higher, territory categories apply, and Failure to Correct can put the standard penalty at 200 per cent of the tax before any reduction.

    Non-resident landlords have a second layer: the Non-Resident Landlord Scheme, NRL1 registration, and withholding by the letting agent. And where the same rent has been taxed abroad, relief has to be claimed rather than assumed. Our pages on foreign tax for UK residents and double taxation relief on foreign rental income cover the ground.

    Find your situation

    Most landlords contact a Let Property Campaign accountant at one of seven points. Find the closest match, because the right next step is different at each one.

    1) "I've received a letter from HMRC about rental income"

    Reply, and get advice before you do. HMRC already holds data linking you to a let property, so this is a prompted position and the lower penalty band has closed. What is still in play is the reduction for telling, helping and giving access, and the first reply sets the tone for all of it.

    2) "I started a Let Property Campaign disclosure, but it isn't finished"

    Finish it inside the window, or tell HMRC before the window closes. A stalled disclosure is recoverable. An abandoned one looks like a withdrawn admission, which is the worst position on this page.

    3) "I haven't told HMRC yet, but I know I should have"

    You are in the best position anyone reading this can be in. Unprompted and careless starts at nil, and that stays true right up until a letter arrives.

    4) "I'm not sure I even need to disclose"

    Check the figures before you assume either way. The property allowance, the Rent a Room threshold, void periods and genuine allowable expenses mean some landlords owe nothing at all, and a short calculation on the rent book settles it.

    5) "My records are incomplete"

    Disclose on reasonable estimates, and evidence how you built them from the bank statements and tenancy agreements that survive. Missing paperwork delays a disclosure. It does not prevent one.

    6) "I can't afford to pay the tax in one go"

    Arrange Time to Pay first, then submit. Doing it in that order is the single most useful piece of Let Property Campaign advice on this page.

    7) "I'm worried this could turn into something serious"

    Take advice before you notify anything. If the behaviour was deliberate, Code of Practice 9 is the only route carrying an assurance against criminal investigation, and notifying under the campaign instead closes that door.

    A small meeting room set for a first consultation with two chairs, an open folder and two cups of tea, before a landlord disclosure beginsThe first fifteen minutes

    One person, start to finish. You will not be handed round a team.

    Most disclosures begin with a short conversation and nothing else. Documents come afterwards.

    Our Let Property Campaign Disclosure and Mitigation services

    Seven stages. Total Books tells you at every point what has been done and what is next, and you deal with one person throughout rather than a queue.

    1. Fact find and risk check.Which properties, which years, and whether HMRC has already been in touch. This decides how urgent it is and which facility applies.
    2. Build the disclosure pack.Bank statements, letting agent statements, tenancy dates, void periods and property costs, plus anything you already submitted if you started this yourself. Where there is a managing agent, we go to them directly rather than to you.
    3. Calculate every year properly.Year by year, not a total. Sometimes the answer is smaller than you feared, and occasionally there is nothing to pay once the finance costs and allowable expenses are in.
    4. Penalty mitigation and wording.We categorise the behaviour honestly, propose the reduction the facts support, and write the explanation that justifies it.
    5. Submit through HMRC's Digital Disclosure Service.Inside the window, from our HMRC Agent Services Account, with the disclosure reference number and the payment reference number kept straight.
    6. Handle the queries.If HMRC comes back, the correspondence comes to us.
    7. Arrange the payment plan.Agreed before submission where you need it.

    What does a Let Property Campaign accountant cost?

    It depends on four things, and we tell you the figure before any work starts, never after.

    • How many years are in scope. Four years of one flat is a different job from twelve years of a portfolio
    • How many properties, and whether they were held jointly, through a managing agent, or with void periods to account for
    • What records survive. Complete bank statements, letting agent statements and mortgage interest certificates are quick. Reconstruction from fragments is not
    • Whether HMRC has already written. A prompted case runs to their timetable rather than yours

    We quote a fixed fee once we know those four answers, which is what the free 15 minute call establishes. There is no charge for the call and no obligation after it. What we will not do is quote a number on a web page for work we have not scoped, because the honest answer to what a Let Property Campaign accountant costs is that it depends on your years, and anyone publishing a single price is guessing at yours.

    One thing worth weighing against the fee. The reductions for telling, helping and giving access are earned by the quality of the disclosure, and they apply to a penalty that can run to the full amount of the tax. On a disclosure of any size, that is usually the larger number.

    A row of British Victorian terraced houses on a quiet residential street, the everyday UK residential lettings the Let Property Campaign coversCARDIFF · NEWPORT · BRISTOL

    Ordinary streets, ordinary lettings. This is what the campaign was built for.

    Total Books runs disclosures for landlords across Wales and the West, and UK wide through the Virtual Finance Office.

    Ensure compliance and maximise your rental income with Total Books

    Buhir Rafiq leads the work. Total Books is an AAT licensed practice and an HMRC registered tax agent, a Companies House authorised agent and a Xero Certified Advisor, and Buhir has more than thirty years in accounting and seventeen running the firm from offices in Cardiff, Newport and Bristol. You can read more about Buhir Rafiq or work through the client reviews before you call.

    The free 15 minute call covers four things: whether the campaign is your route, roughly how many years are in scope, what the realistic penalty band looks like on your facts, and what happens in the first fortnight. You will not be asked for documents on it. Records come later, through the secure client portal, and where a landlord has a portfolio we pull the paperwork together with Dext rather than asking for shoeboxes.

    It is also confidential. Talking to an accountant about undeclared rent does not put you on a list and does not oblige you to disclose. People ask us this more than any other question, so we answer it before it is asked.

    Looking for a landlord accountant near you?

    Total Books works with landlords from three offices and remotely across the UK, so proximity is a convenience rather than a requirement. Let Property Campaign accountants are not thick on the ground outside London, which is why most of our disclosure work arrives from further afield than the office postcodes suggest.

    Disclosure work does not need you in a room. Most of it runs on documents and correspondence, and our Virtual Finance Office handles landlords and property tax advisers' clients anywhere in the UK through a secure client portal. Landlords searching for a Let Property Campaign accountant near them are usually looking for someone who will pick up the phone, and that part we can promise wherever you are.

    You can also read what landlords say about the work. Our client reviews run to more than four hundred, and the Let Property Campaign reviews sit among them.

    Dean W: 12 Years of Undeclared Rental Income Disclosed and HMRC Penalties Cut to 10 Per Cent

    Dean came to us with twelve years of rental income that had never been fully declared and overdue Self Assessment returns he could not face. He was worried the penalty would be applied at the top.

    We ran the disclosure through the Let Property Campaign, rebuilt the records year by year, prepared and filed the historic returns with clear calculations, and dealt with HMRC directly. The outcome was full compliance and penalties reduced from 100 per cent to 10 per cent, along with a system that keeps the following years straightforward. That was Dean's result on Dean's facts, and it is not a promise about yours.

    Read Dean's full case study, or Martha's ten years of unfiled returns.

    In her own words

    Landlords tell us the relief is the point as much as the numbers. So grateful for someone face to face as opposed to a chat box and not having to spend hours trawling through YouTube.

    ★★★★★ Sherran P. in her own words, Google review, March 2025

    Ignoring undeclared rental income does not make HMRC go away

    HMRC receives rent and payment data on land and property from third parties, and digital platforms have reported seller and host income since the first returns landed on 31 January 2025. Land Registry feeds, deposit scheme data and letting agent returns are widely reported as sources too, though HMRC has not confirmed them.

    The practical position is simpler than the speculation. Undeclared rent surfaces eventually, usually at the worst moment: a sale, a remortgage, a probate application, or a Making Tax Digital sign up that makes the history visible. Every month it waits, the interest grows and the unprompted band stays available for one month less.

    The rest of the landlord disclosure library

    This page is the hub. Each guide below goes deeper on one part of it, and each links back here.

    The process

    Notification, the reference number, the 90 days, the offer and the payment.

    The disclosure, step by step

    Choosing the facility

    Campaign, Digital Disclosure Service, Worldwide Disclosure Facility or COP9.

    Which HMRC route applies

    If a letter arrived

    What a prompted disclosure costs, and what to put in the first reply.

    Prompted or voluntary

    If the paperwork is gone

    Reasonable estimates HMRC accepts, and how to evidence them.

    Disclosing with missing records

    Getting the figures right

    Rent received against taxable profit, and the expenses that come off.

    Calculating rental profit

    Afterwards

    Quarterly updates and digital records once the years are closed.

    MTD ITSA for landlords

    Selling the property, or holding it in a company, changes the picture again. Our capital gains tax service covers the disposal side, and personal tax takes over once the disclosure is settled.

    Landlords across Wales and the West. Disclosure work runs from our offices in Cardiff, Newport and Bristol, and UK wide through the Virtual Finance Office.

    Frequently asked questions about the Let Property Campaign

    Short answers first. If yours is not here, it is the kind of question the free 15 minute call exists for.

    Is the Let Property Campaign still running, and when does it end?

    It opened in 2013 and it is still open. HMRC has never announced a closing date. It has closed campaigns at short notice before, though, so treat the current position as available rather than guaranteed.

    How far back can the Let Property Campaign go?

    Four years where you took reasonable care, six where you were careless, and twenty where the behaviour was deliberate. Your behaviour decides the window, not how long the property has been let.

    What does a Let Property Campaign prompted disclosure mean?

    It means HMRC already holds data linking you to a let property and has written to you before you came forward. Your disclosure is now prompted, so the lower penalty band has closed. Reply, do not ignore it, and get advice before you write back.

    What is the Let Property Campaign penalty?

    A percentage of the tax, from 0 to 100 per cent depending on behaviour and on whether the disclosure is prompted. Careless and unprompted starts at nothing. Deliberate and concealed and prompted starts at 50 per cent.

    Can I disclose if my records are incomplete?

    Yes. HMRC accepts reasonable estimates where records genuinely no longer exist, provided you show how you built them. Bank statements, tenancy agreements and letting agent statements are usually enough to reconstruct a defensible figure.

    What is the difference between rental income and rental profit?

    Income is the rent you received. Profit is what is left after allowable expenses, and it is profit that is taxed. Getting this wrong is the commonest reason a landlord over-estimates what they owe. Our guide to calculating rental profit sets out the method.

    What expenses can I claim?

    Repairs, letting agent fees, insurance, ground rent and service charges, and the finance cost credit for mortgage interest at the basic rate. Improvements are capital and do not come off rental profit. There is more in our guide to reducing let property tax.

    Do Airbnb and short lets need disclosing?

    Yes. Digital platforms have reported host income to HMRC since the first returns landed on 31 January 2025. The Furnished Holiday Lettings regime was abolished on 6 April 2025, so short lets are now taxed as ordinary property income. Our note on the Furnished Holiday Lettings changes covers what moved.

    Do lodgers and rent a room income need declaring?

    Only above the Rent a Room threshold of 7,500 pounds a year, or 3,750 pounds where the income is shared. Below it, and where you live in the property, there is nothing to declare.

    What is the 90 day disclosure window?

    Ninety days from the date HMRC acknowledges your notification and issues your disclosure reference number, to submit the disclosure and pay or agree Time to Pay. It does not run from the day you first thought about it.

    What happens after I submit?

    HMRC either accepts the offer, forming a contract settlement that closes those years, or comes back with questions. Where Total Books has made the disclosure, the questions come to us.

    Will disclosing affect my mortgage?

    A disclosure is not published and is not shared with lenders. What can affect a remortgage is the settled liability itself, if it changes your affordability, and an unresolved HMRC debt is worse on that measure than a settled one.

    Is there a Let Property Campaign penalty calculator I can use?

    No tool can give you a reliable figure, because the penalty depends on behaviour, on whether the disclosure is prompted, and on the quality of what you submit. The range chart above shows the bands that apply. Working out where inside a band you land is a judgement, and it is the judgement we are paid to make.

    Do you work with landlords outside Cardiff, Newport and Bristol?

    Yes. Disclosure work runs on documents and correspondence, so we act for landlords across the UK through the Virtual Finance Office and a secure client portal. Being local is a convenience, not a requirement.

    Can I talk to you about this confidentially first?

    Yes. A conversation with an accountant about undeclared rent does not put you on a list, does not notify HMRC, and does not commit you to disclosing.

    A tidy home office desk with a closed laptop and an empty in tray, the settled position after an HMRC disclosure is acceptedAfter settlement

    Years closed, liability fixed, and the following January like anyone else’s.

    What landlords actually come for is not the disclosure. It is the year after it.

    What to have ready, if you want to move quickly

    Nothing on this list is needed for the free 15 minute call. It is what Total Books asks for afterwards, and landlords who gather it early shorten the first month of the 90 days considerably.

    • bank statements for the account the rent landed in, as far back as they go
    • every tenancy agreement you still have, and the tenant dates you remember
    • letting agent statements, or the managing agent's name so we can request them
    • mortgage interest certificates for each year
    • your UTR, if you have ever filed a Self Assessment return
    • the nudge letter itself, if one has arrived

    Missing several of these is normal and it is not a reason to wait. Total Books rebuilds from whatever survives, and a year by year schedule built on a current account and a rent book is still a disclosure HMRC accepts.

    Start the 90 days on your terms

    Book the free 15 minute call. Tell us what has been let and roughly for how long, and Total Books will tell you which facility applies, how many years are in scope, and what the first fortnight looks like. Bring the letter if one has arrived. If one has not, that is the better call to be making.

    Let Property Campaign disclosure

    One call settles which facility applies and how many years are in scope

    Total Books has run this work for landlords since long before the campaign made it routine. Bring the letter if one arrived. If none has, you are in the better position, and it is the better call to make.

    AAT licensed practiceHMRC registered tax agentCompanies House authorised agentXero Certified Advisor

    This page explains how the HMRC Let Property Campaign works and is general information, not advice on your own circumstances. Penalty outcomes depend on your facts and on HMRC’s decision. Figures quoted are from GOV.UK, HMRC factsheets CC/FS7a, CC/FS11 and CC/FS17 and the HMRC Compliance Handbook, checked August 2026.

    Disclaimer:

    Please be advised that the completion of the self-assessment, tax returns, accounts & in house bookkeeping  is the responsibility of the taxpayer. If you are not a client of Total Books and are using any parts of this guide to complete your own work without direct advice from Total Books, then we will not be held responsible for any mistakes made directly by yourselves.

    We always advise seeking professional support from a qualified accountant as tax is a complex area. To speak to one of our experts call us on 02920 026 505

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