Landlords are one of HMRC’s most actively checked groups, because property income is visible from many directions: deposit protection schemes, letting agents, Land Registry, council records and the banks all feed HMRC data it can match against tax returns. Tax investigation insurance for a landlord covers the accountant’s fees for defending an HMRC enquiry into your return; it does not pay any tax found due. If you have undeclared rental income, the Let Property Campaign exists to disclose it voluntarily, on better penalty terms than waiting for HMRC’s letter. The landlord’s real exposure is rarely dishonesty. It is complexity: mortgage interest relief rules that changed, a room let in the main home, a period of unintended letting after moving in with a partner, a holiday let straddling the rules. Complexity is what HMRC’s data-matching flags, and answering the resulting questions is what costs money.

Why landlords get checked so often

HMRC does not need to guess who is a landlord. Deposit schemes register tenancies, letting agents report, and property transactions are public. When the data says rental income exists and the return says little or nothing, a letter follows. Many landlord enquiries begin exactly there, with a mismatch rather than an accusation. The questions then reach backwards. HMRC’s normal assessing limits run four years, six where tax was lost carelessly, and twenty where it was deliberate, so a letting that has been quietly mis-handled for a decade is not a one-year problem.

What the insurance does for a landlord

It pays the professional fees of responding: reconstructing the rental accounts, dealing with HMRC’s information requests, arguing the treatment of repairs against improvements, interest restrictions, occupancy periods and reliefs, and seeing the enquiry through to closure. Fee protection responds to enquiries that begin while the policy is in force, which is why it is bought before the letter, not after. It does not pay the tax, interest or penalties on income that should have been declared. No insurance does.

The Let Property Campaign, honestly explained

If there is rental income HMRC has not been told about, the Let Property Campaign is the route designed for individual residential landlords to put it right: single lets, multiple properties, rooms let in your own home, holiday lets, and UK property let while you live abroad. It does not cover non-residential lets such as shops or lock-ups, or disclosures on behalf of companies and trusts. The process is notify first, disclose second: you tell HMRC you intend to disclose, and once HMRC acknowledges, you have 90 days to make the disclosure and pay. Penalties are usually lower on a voluntary disclosure than when HMRC finds the income first, and HMRC states it will seek significantly higher penalties where a disclosure turns out to be materially wrong. Disclosure work is exactly the kind of professional job an accountant should run, and it sits outside enquiry insurance: cover responds to HMRC checks, not to putting right the past. The honest sequencing for a landlord with a history is: disclose first, insure the future.

Common questions

Does tax investigation insurance cover undeclared rental income?

No policy pays the tax, interest or penalties on income that should have been declared. What fee protection covers is the professional cost of defending enquiries that start while you are covered.

How does HMRC know I am a landlord?

Deposit protection schemes, letting agents, Land Registry and other data sources give HMRC a picture of who lets property. Enquiries commonly start from a mismatch between that data and the return.

How far back can HMRC go on rental income?

Four years in the ordinary case, six where the loss of tax was careless, and twenty where it was deliberate, including failures to notify.

Who can use the Let Property Campaign?

Individual residential landlords: single or multiple properties, rooms in your own home, holiday lets, and UK lettings while living abroad. Companies, trusts and non-residential lets are outside it.

How long do I get to disclose under the campaign?

Ninety days from HMRC’s acknowledgement of your notification, with payment due by the date on the acknowledgement.

Related guides

This page is general information for landlords about HMRC enquiries and the Let Property Campaign, not tax advice, and it does not describe the terms of any particular insurance policy. Solar Insurance Services (Medway) Limited is registered in England and Wales, company number 05439438, and is authorised and regulated by the Financial Conduct Authority, firm reference number 459582. Sources: HMRC, Let Property Campaign: your guide to making a disclosure (gov.uk); HMRC Compliance Handbook CH52100 and CH53000 on assessing time limits.