Let Property Campaign Disclosures

Let Property Campaign · HMRC disclosure

Owe tax on rental income? Disclose it before HMRC finds out.

The Let Property Campaign is HMRC’s structured way for landlords to come forward and put their tax history right – with significantly lower penalties than waiting to be caught. We handle the whole process: notification, calculation, disclosure and follow-up.

Reducedpenalties (vs enquiry)
Up to 20 yrsWe can disclose for
Fixed feePer disclosure case
ConfidentialThroughout the process

Why coming forward is almost always the right move

HMRC has more data on landlords than ever. The Land Registry, lettings agents, deposit schemes, mortgage lenders and tenancy databases all feed into HMRC\u2019s “Connect” system. If they spot undeclared rental income before you disclose it, you are looking at penalties of up to 100% of the tax owed, plus interest, plus the risk of criminal investigation in serious cases.

The Let Property Campaign flips the maths. Disclose voluntarily and penalties drop to 0-20% in most cases, the process stays civil, and you put it behind you. We have handled hundreds of LPC disclosures – from a single forgotten flat through to multi-property portfolios spanning 15+ years – and we know exactly how HMRC scores each case.

In your fixed fee

What’s included

  • Initial confidential review of your situation
  • LPC notification to HMRC on your behalf
  • Reconstructing rental income and allowable expenses for every year
  • Section 24 mortgage interest restriction calculation
  • Capital allowance and replacement-of-domestic-items review
  • Penalty mitigation argument and behaviour categorisation
  • Full disclosure submission via the LPC online service
  • Negotiation of the final settlement and time-to-pay if needed
  • Setting up correct ongoing self-assessment going forward
  • Ongoing rental accounts so it does not happen again
Why Mercian

Why clients stay

A genuinely modern approach

Cloud accounting, MTD-ready workflows and secure document portals — no shoeboxes of receipts, no surprise emails in March.

Fixed fees, no clock-watching

A clear monthly price agreed up front. Call us as often as you need without worrying about a meter running.

Senior advice, not call-centre answers

Every client has a named accountant who knows your business — not a ticket queue.

FAQ

Common questions

I had no idea I needed to declare rental income, does HMRC see that as deliberate?
Probably not. Behaviour categorisation matters: “non-deliberate” or “careless” attracts much lower penalties (0-30%) than “deliberate” (35-100%). We help you make the case correctly, with evidence.
How many years do I have to disclose?
Up to 4 years if non-deliberate, 6 if careless, 20 if deliberate. We work out which category fits and disclose only the years required.
Will HMRC come after me criminally?
For pure undeclared rental income disclosed voluntarily through the LPC, criminal proceedings are extremely rare. The Campaign exists specifically to bring people in without that risk.
Can I afford to pay it all at once?
HMRC will agree time-to-pay arrangements in genuine cases. We negotiate that as part of the disclosure.
I have already had a “nudge letter” from HMRC. Is it too late for the LPC?
No, but you have 90 days from the letter to disclose to keep the lower penalty rates. Call us today, not next week.

Ready to talk to a real accountant?

Book a free 30-minute call. We’ll tell you straight whether we can help, what it would cost, and what to do next. No sales pitch, no obligation.