HMRC Let Property Campaign Disclosures

The Let Property Campaign is a way for anyone who has income from letting out a residential property to put their tax affairs in order.

HMRC recognise that some people have purchased a second property as an investment, others have become landlords by accident, perhaps after work-based relocations or through changes to domestic circumstances, such as moving in with a partner or looking after an elderly relative.

HMRC are using more effective measures to identify landlords who have let property and those who come forward voluntarily will still have to pay a penalty of up to 20% – plus the tax and interest – but this compares with penalties of up to 100%, and even the possibility of prosecution.

If you have received a letter from HMRC then you have to act promptly as there can be increased penalties and they can bring criminal proceedings. If you have not received a letter you should consider making an unprompted disclosure as the penalties will be lower.

We can help you make your Let Property Campaign disclosure and make sure you pay the right amount of tax. We undertake a full tax review of all of the undeclared years, helping identify allowable expenses and minimising your tax liability.

Liaise with HMRC on your behalf

We can attend to the initial registration with HMRC's Let Property Campaign. This will set you up on the tax system. Then we'll register you as a client, allowing us to act on your behalf, dealing with HMRC from start to finish.

Free Tax Review

We undertake a full tax review of all the undeclared years and ensure all allowable expenses and are claimed to help minimise your tax liability.

Friendly Service

We have designed our service to be as easy and pain free as possible.

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We will spend time talking to you and understanding your circumstances. Then we'll explain the disclosure process and the financial consequences of disclosing.

We will carry out a careful analysis of your running and maintenance expenses so as to determine which ones are allowable as a revenue deduction. These can help to minimise your tax liability.


For each affected year we will carry out a tax review based on the information you have have provided.

We then calculate the tax, interest and penalties for the affected years. Next we will discuss the total amount due and how and when this will be paid to HM Revenue & Customs.


With your agreement we will then make a full disclosure to HM Revenue & Customs under the Let Property Campaign. We can also help negotiate payment terms prior to the disclosure.

We will attend to subsequent queries that HM Revenue & Customs might have. Finally we will also give you advice on ensuring you are compliant in future.


If you're interested in finding out more about our services please contact us.



 01332 202660

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   Adrian Mooy & Co Ltd  -  61 Friar Gate   Derby   DE1 1DJ  -



Adrian Mooy & Co - Accountants in Derby
61 Friar Gate Derby, Derbyshire DE1 1DJ
Phone: 01332 202660 Hours: Mon-Fri 9.00am - 5:00pm



  • I haven't received a letter, should I make a disclosure?

    Yes, we would recommend disclosing as soon as possible. HMRC’s state-of-the-art analytical computer system ‘Connect’ cross-references various databases to identify landlords who are not currently fulfilling their tax obligations. You are treated more favorably if you disclose before you have been sent a letter.

  • How do I disclose my income?

    To take part in the Let Property Campaign you need to:

    • tell HMRC that you want to take part in the Let Property Campaign
    • tell HMRC about all income, gains, & tax you’ve not previously told them about
    • make a formal offer
    • pay what you owe
    • help HMRC as much as you can if they ask you for more information
  • What happens if I don't disclose?

    If you don't pay and HMRC finds out that you have purposefully not declared the income then you could suffer penalties of up to 100% of the unpaid tax and possibly criminal prosecution.

  • How long does the process take?

    This depends on what stage you are at, whether you have had a letter and whether you have all your information ready.

  • Is there a disclosure deadline?

    No, the Let Property Campaign is ongoing and there is currently no disclosure window. However, we would advise that those landlords who intend to come forward do so sooner rather than later to avoid facing higher penalties if they are subject to a HMRC enquiry.

  • What happens after the disclosure?

    Payment is made on an agreed date. Subsequently HMRC will review the disclosure and if they accept it they will send you a letter accepting your offer. You will then need to complete a tax return each year assuming you continue to receive rental income.

We offer guidance on making a disclosure under this current campaign to help minimise your tax liability.

We will talk with you about your circumstances and help you to claim all the expenses that you are entitled to, ensuring you only pay the tax that you owe.







The Let Property Campaign is HMRC's initiative to recuperate lost tax revenues using new measures to identify private landlords that have not declared their rental income to them in the past 20 years.


Through deposit protection schemes, land registry lists and landlord’s insurance databases, HMRC are slowly but surely cross checking their tax records to identify anyone who hasn’t previously declared their rental income.


Once identified people are asked to "join" the campaign which will start the process of calculating your bill. Interest is applied to all money owed as well as penalties that can range up to 70% depending on the circumstances surrounding the claim.


If you make a voluntary disclosure to HMRC then we can negotiate much fairer penalties saving you thousands of pounds in some cases!


Check out the Government’s page on the campaign



If HMRC suspects that you have a rental property but can not see where it is declared then they will send you a letter detailing their suspicions.


Once you receive the letter there is a deadline of 30 days to which you must respond and either concede and "join" the Let Property Campaign or tell them they are mistaken. Once joined you are then given 3 months to calculate your tax and arrange payment.


If you do not act promptly when you have received a letter the penalties can be steep and in some cases they have the power to bring criminal proceedings.




Your total bill is calculated by working out the tax you would have owed for each year of undeclared income and then adding on interest (currently 3%/Year) and financial penalties.


To work out the tax owed, you have to calculate the profit/loss from each rental property which allows you to claim certain expenses and reliefs that will help to reduce your tax liability.


The calculated tax is then subject to an annual interest for the period of time that you have owed the tax. Penalties are then added at a rate determined by the circumstances of your disclosure.



The amount or percentage of penalties you may receive all depend on your situation surrounding the claim including whether you have received a letter or not from the HMRC or that you have acted within their time limits for paying.


The percentage rates below should be considered as a guideline:


CircumstanceBefore LetterAfter Letter
Careless under disclosure of income on your tax returnNo Penalty15 to 30%
Careless non disclosure of income on your tax return10%15 - 30%
Deliberate under disclosure of income on your tax return20%35 - 70%
Deliberate non disclosure of income on your tax return20%35 - 100%




This is an opportunity to stop worrying about what might happen.  if you do not come forward and HMRC finds later that you’re behind with your tax, it may be harder to convince them that it was simply a mistake. The law allows HMRC to go back up to 20 years and in serious cases HMRC may carry out a criminal investigation.


With the reduced penalties on unprompted disclosures it is good idea to start the process before you get a letter. HMRC is currently increasing its targeted compliance activity across all landlord types and their state-of-the-art analytical computer system ‘Connect’ cross-references various databases to identify landlords who are not currently fulfilling their tax obligations.


Do not worry if you cannot afford to pay what you owe in one lump sum, if your circumstances warrant it, you’ll be able to spread your payments.


If you have not received a letter from HMRC but your circumstances fit any of the following then you should consider making a disclosure:


  •  those that have multiple properties
  •  landlords with single rentals
  •  specialist landlords with student or workforce rentals
  •  holiday lettings
  •  renting out a room in your main home for more than the Rent a Room Scheme threshold
  •  those who live abroad or intend to live abroad for more than 6 months and rent out a property in the UK, as you may still be liable to UK taxes

The campaign is not open to those landlords who are letting out non-residential properties such as a shop, garage or lock up. It also cannot be used by those wishing to disclose income on behalf of a company or a trust.


The Greyhound




If you have properties to declare then get in touch and we will talk it over with you.  We can then provide you with a fixed fee, no obligation quote.

Adrian Mooy & Co Ltd is registered to carry out audit work in the UK by The Association of Chartered Certified Accountants.

Details about our audit registration can be viewed at under number 8011438.

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