MTD Late Filing & Late Payment Penalties

Miss enough Making Tax Digital deadlines and it does eventually cost you money — but the rules for exactly when, and how much, are more specific than most people assume. There are two entirely separate penalty tracks running at once: a points system for late submissions, and a percentage-based system for late payment. There's also a genuine grace period in the first year that gets misquoted more often than almost any other MTD fact. This guide sets out precisely what's covered, what isn't, and what it takes to leave the points system behind once you've been caught by it.

Late-submission points

Every time you miss a quarterly update deadline or a tax return deadline, HMRC adds one penalty point to your account. Points accumulate independently of how late the submission eventually was — missing a deadline by a day and missing it by a month both add exactly one point. Once you reach 4 points, you get a fixed £200 penalty, and from then on, every further missed deadline while you're at or above the threshold triggers another £200 penalty of its own. It doesn't escalate beyond that fixed amount per miss; the points system is designed around frequency of lateness, not the size of any particular penalty.

Individual points expire on their own after 24 months, provided you've stayed below the 4-point threshold in the meantime — so an isolated late submission years ago, on its own, eventually stops counting against you. But once you've actually reached the threshold and been fined, getting back to zero points is a two-condition reset, not a simple clock running out. You need to clear the entire 24-month backlog of points and submit every quarterly update and return on time for 12 consecutive months after that. Both conditions have to be satisfied together — a lot of guidance online compresses this into "points expire after 24 months" and stops there, which understates what it actually takes to reset once you've crossed the threshold and picked up the fixed penalty.

The 2026-27 soft landing

HMRC has built in a genuine first-year grace period: there are no penalty points and no £200 fixed penalties for missing a quarterly update deadline during the 2026-27 tax year. If this is your first year mandated into MTD, a late quarterly update in that specific year genuinely doesn't cost you anything under the points system.

Here's the exclusion that matters most and gets missed constantly: the soft landing covers quarterly updates only. It does not cover the final declaration. Your year-end final declaration for the 2026-27 tax year is still subject to the normal points-and-penalty regime (the same regime that already applies to Self Assessment late filing) even though your quarterly updates that same year are protected. Treating the soft landing as blanket first-year immunity is the single most common mistake we see landlords make about MTD penalties, and it's an expensive one to make on the assumption that the whole first year is consequence-free.

Late-payment penalties

Late-payment penalties are a completely separate track from the points system above, and they're based on how many days late your payment is rather than how many deadlines you've missed. In the 2026-27 tax year, the first 15 days late carry no penalty at all — HMRC gives a 30-day window in this first year to pay in full or agree a payment plan before any penalty applies. From day 16 to day 30 late, a 3% penalty applies to the tax still outstanding at day 15. From day 31 onward, that 3% is joined by a further 3% of the tax still outstanding at day 30, plus an additional charge that accrues daily at an annualised 10% rate from day 31 onward. From the 2027-28 tax year, the grace window shortens to 15 days and both fixed percentages step up to 4%, with the same day-31 daily-accrual structure carrying over unchanged.

None of this replaces ordinary late-payment interest — interest keeps accruing on unpaid tax exactly as it always has, on top of whichever late-payment penalty tier applies. The two systems run in parallel and neither one substitutes for the other.

Leaving MTD

Once you're mandated into MTD, getting out of it again isn't as simple as one year's income dropping below a threshold. Under the current rules, you only become exempt again once your qualifying income falls below the applicable threshold for 3 consecutive tax years. Applies against the mandation threshold in force for each of the three years being tested (see MTD_THRESHOLDS), not a single fixed amount. That's a meaningfully stickier test than checking your income against one year's threshold and assuming you're free the moment it dips below — you need three years running below the relevant figure for each of those years specifically, not three years below today's figure or a single flat amount that applies across the whole period.

This exit test is set out in the current digital-obligations regulations (SI 2026/336); an earlier statutory instrument that used a single flat exit figure was formally revoked and never came into force, so any source quoting a flat exit threshold is describing a rule that doesn't actually apply. Always check your own qualifying income for each of the three years against that year's own mandation wave — see MTD deadlines & thresholds for the full three-wave table those figures are drawn from.

Staying ahead of all of this

Every penalty described above is triggered by lateness, not by the underlying figures being wrong — submit on time and none of this applies to you. The practical fix is treating your quarterly deadlines as fixed commitments rather than approximate ones, and building your record-keeping so the quarterly totals are ready well before the deadline rather than assembled under pressure in the final days. If you're not yet sure which threshold applies to you or when your first deadline actually falls, start with the threshold guide and the quarterly filing dates guide, both of which link through to a downloadable calendar of every deadline. Or skip straight to the deadline calculator for your own dates and never miss one of these points in the first place. Join the waitlist below to get notified the moment Landlord MTD Software is ready to help you file on time, every time.