HMRC’s Let Property Campaign: How to Declare Your Rental Income

If you have recently discovered that you owe tax on rental income from a property you own, you are certainly not alone. Many individuals find themselves in the category of the "accidental landlord." Perhaps you moved in with a partner and decided to rent out your former flat, or maybe you inherited a family home and chose to let it out rather than sell it. In the rush of managing tenants and maintenance, the tax implications often fall to the bottom of the priority list: until you realize that HMRC expects a share of that income.

The prospect of facing HM Revenue & Customs (HMRC) can be daunting, particularly when you realize you are several years behind on your filings. However, the Let Property Campaign (LPC) exists specifically to help people in your position. It is a voluntary disclosure scheme designed to allow individual landlords to bring their tax affairs up to date under more favorable terms than if HMRC were to find the discrepancy first.

At Global Tax Consulting, we specialize in navigating these disclosures. We understand that the primary goal for most landlords is to resolve the issue quickly, legally, and with as little financial "sting" as possible. Providing that you take the initiative to come forward, the path to compliance is much smoother than you might expect.

What is the HMRC Let Property Campaign?

The Let Property Campaign is an ongoing voluntary disclosure facility. It is aimed at individual landlords who have failed to declare rental income from residential properties. It is important to note that this scheme is specifically for residential property; it does not apply to commercial property, nor does it apply to income held within a limited company or a trust.
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You can use the Let Property Campaign if you fall into any of the following categories:

• You rent out a single property or a portfolio of multiple properties.
• You are a specialist landlord, such as those providing student or workforce accommodation.
• You rent out a room in your own home for an amount that exceeds the "Rent a Room" scheme threshold.
• You live abroad but continue to rent out property in the UK.
• You have inherited a property and have been receiving rent from it without notifying HMRC.

The core benefit of the LPC is the opportunity to make a "voluntary disclosure." In the eyes of HMRC, there is a significant difference between a taxpayer who realizes an error and comes forward (unprompted) and one who only admits to an error once an investigation has started (prompted). By choosing the unprompted route, you gain access to significantly lower penalty rates.

The Risk of Silence: Why HMRC Already Knows

It is a common misconception that rental income is "invisible" to HMRC unless it is reported on a Self-Assessment tax return. In reality, HMRC has spent the last decade building one of the most sophisticated data-gathering systems in the world, known as "Connect." This system aggregates data from various sources, including the Land Registry, letting agents, deposit protection schemes, and even social media or holiday booking platforms like Airbnb.

Furthermore, under the Common Reporting Standard (CRS), HMRC receives data from over 100 countries regarding offshore bank accounts. If you are living abroad and receiving UK rental income into a foreign account, or vice versa, the likelihood of this remaining undetected is decreasing rapidly every year. You can read more about how this data sharing works in our 2026 Guide to UK Tax Residency.

If HMRC finds the undeclared income before you disclose it, they will likely issue a "nudge letter." This is a formal communication stating they have information suggesting you have additional income to declare. Once you receive this letter, any subsequent disclosure is usually classified as "prompted," which carries much higher penalties: potentially up to 100% of the tax due.
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The Financial Benefits of Voluntary Disclosure

When you make a disclosure through the Let Property Campaign, you are essentially asking HMRC for a "settlement." This settlement consists of three parts: the unpaid tax, the interest on that tax, and the penalty.

Providing that your failure to notify HMRC was "careless" rather than "deliberate," and that you come forward voluntarily, the penalties can be as low as 10%. Even in cases where HMRC deems the error to be more significant, the voluntary nature of your disclosure acts as a powerful mitigating factor.

By way of example, consider the difference in penalty scales:
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1. Unprompted Disclosure (Voluntary): Penalties typically range from 0% to 30%, depending on the level of "care" taken by the taxpayer.
2. Prompted Disclosure (HMRC finds you): Penalties can easily range from 30% to 100% of the tax owed.

Furthermore, by using the LPC, you can often negotiate a "Time to Pay" arrangement. If the final bill is larger than your current liquid assets, Global Tax Consulting can assist in proposing a payment plan that spreads the cost over several months, or even years, depending on your circumstances.

The Disclosure Process: Four Simple Steps

Navigating the LPC is a structured process. While it requires precision, it is entirely manageable when broken down into these four stages:

1. Notification

The first step is to tell HMRC that you intend to make a disclosure. You do not need to provide any figures at this stage. You simply notify them that you are coming forward under the Let Property Campaign. Once you notify them, HMRC will issue you a Disclosure Reference Number (DRN).

2. Preparation

Once you have notified HMRC, you have 90 days to prepare your full disclosure. This is the most critical phase. You must calculate your rental income for every year that remains "in time" (which can be up to 20 years depending on the circumstances) and deduct all "allowable expenses."

Allowable expenses include:
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• Letting agent fees and management commissions.
• Property insurance.
• Maintenance and repairs (though not capital improvements like extensions).
• Utility bills or Council Tax if paid by the landlord.
• Professional fees, such as legal or accounting costs related to the letting.

3. Submission

After calculating the tax, interest, and self-assessed penalty, you submit the formal disclosure. At this point, you must also disclose any other undeclared income. The LPC requires a "full and frank" disclosure; you cannot pick and choose which income to declare. If you have undisclosed capital gains or interest from offshore accounts, these must be included to ensure the disclosure is valid.

4. Offer and Acceptance

The final stage involves making a formal "offer" to pay the total amount. HMRC will review your submission. Providing that the disclosure is complete and the calculations are accurate, they will issue an acceptance letter. This creates a legally binding contract, effectively closing the matter for the years covered.
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How Many Years Do You Need to Disclose?

A common question we receive at Global Tax Consulting is: "How far back does HMRC look?" The answer depends entirely on your "behaviour."
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• Reasonable Excuse: If you have a legitimate reason for not declaring (e.g., a serious illness or bereavement), you may only need to go back 3 years.
• Careless: If you simply made a mistake or failed to take reasonable care, HMRC typically requires disclosure for the last 6 years.
• Deliberate: If you knew you should be paying tax but intentionally chose not to, HMRC can go back 20 years.
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Determining which category you fall into is a nuanced process. HMRC often pushes for "deliberate" or "careless" classifications to maximize revenue. We recommend that you seek professional advice to ensure your behavior is categorized correctly, as this can save thousands of pounds in tax and penalties. For more information on how we handle these assessments, visit our voluntary disclosure service page.
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Why Global Tax Consulting is the Right Choice

Dealing with HMRC can feel like a high-stakes game where you don't know the rules. The stress of potentially losing your rental profits: or worse, facing criminal prosecution: can be overwhelming.

Global Tax Consulting was founded to remove that stress. We offer a fixed-fee service for Let Property Campaign disclosures, providing you with total transparency from the outset. You won't have to worry about an hourly "ticking clock" while we represent you.

Our process is designed to be as hands-off for you as possible:
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• Expert Analysis: We review your records to identify every possible allowable expense, ensuring you pay the legal minimum.
• Strategic Negotiation: We handle all correspondence with HMRC, arguing for the lowest possible penalty classification based on your specific situation.
• Complete Discretion: Your affairs are handled with absolute confidentiality and professional integrity.

Whether you are an expat living in Dubai needing a UK tax return for expats or a local landlord who just realized they’ve missed a few years of filings, we have the expertise to bring you back into the light.
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Take the First Step Toward Peace of Mind

The Let Property Campaign is a window of opportunity, but it won't stay open forever. HMRC has the power to close or change the terms of these facilities at any time. More importantly, every day you wait is a day closer to a potential "prompted" investigation.

If you have undeclared rental income, the best time to act was yesterday. The second best time is today. By making a voluntary disclosure, you regain control of the narrative, minimize your financial exposure, and: most importantly: keep your sanity.