We handle Let Property Campaign (LPC) disclosures for landlords end to end: notification, the rental computations for every year, the behaviour assessment, penalties and interest, submission within the 90-day window, and HMRC's questions through to acceptance. Correct as at 17 August 2026.
Rental income was never declared, or was under-declared, sometimes for many years. It often starts accidentally: an inherited flat, a property kept after moving in with a partner, a posting abroad. Then an HMRC letter arrives, or a remortgage or sale is coming and the undeclared years block the way. The LPC is HMRC's standing disclosure route for exactly this position, and its mechanics are explained in our guide, the Let Property Campaign explained.
Individual landlords letting residential property, in the UK or abroad. That includes single lets, portfolios, holiday lets, rooms let above the Rent a Room threshold of £7,500 a year (2026/27, gov.uk), inherited properties that were then let, and UK property let by landlords living abroad. It does not cover companies, trusts, or non-residential property such as shops or lock-ups (gov.uk, LPC guidance); those need a different route, which we advise on.
You notify HMRC first, receiving a disclosure reference number. From the date of the notification acknowledgement you have 90 days to submit the full disclosure and pay what you owe, or to agree payment arrangements with HMRC before submitting (gov.uk, LPC guidance). The disclosure covers rental profits year by year, net of allowable expenses, plus any other undeclared income, with interest calculated daily and a self-assessed penalty. The number of years follows behaviour: broadly 4 years where reasonable care was taken, 6 where there was carelessness, and up to 20 where the failure was deliberate or where you never registered for Self Assessment when the letting income began.
We reconstruct the letting history from bank statements, agent statements and mortgage records, including where paperwork is missing. We identify every allowable expense, apply losses correctly (rental losses carry forward against future rental profits only), compute the tax, interest and penalty for each year, and take the behaviour judgement on evidence rather than instinct, because it drives both the year count and the penalty rate. We submit the notification and disclosure, handle HMRC's checks, and where paying in full within the window is not realistic we put the payment case to HMRC before submission.
If HMRC opens an enquiry or compliance check before you notify, the LPC and the certainty of its terms are generally no longer available (gov.uk, LPC guidance). Penalties can then reach 100% of the tax for UK liabilities and 200% where there is an offshore element, and deliberate defaulters can have their details published. Interest runs daily either way. A voluntary disclosure, made before HMRC writes, consistently produces the lower penalty outcome.
LPC engagements are led personally by Ghulam Alahi, Managing Director, who has more than 25 years' experience of HMRC enquiry work. The team includes senior managers who work on landlord disclosures and rental computations week in, week out.
Call 020 8554 2135 or email info@visionconsulting.co.uk. If an HMRC letter has arrived, send a copy ahead of the call. First conversations are confidential and at no cost.
This is general information, not advice. Your position depends on your circumstances. Speak to us before acting.