MTD Penalty Calculator: What Late Submission Costs You

See exactly what late MTD submissions cost you. HMRC penalties start at £200 per missed deadline.

How many quarterly deadlines did you miss?

Q1 (6 Apr – 5 Jul) — Deadline: 5 August Q2 (6 Jul – 5 Oct) — Deadline: 5 November Q3 (6 Oct – 5 Jan) — Deadline: 5 February Q4 (6 Jan – 5 Apr) — Deadline: 5 May

Do you have unpaid tax from these periods? (£) If you owe tax AND paid late, additional penalties apply (5% after 30 days, 5% after 6 months).

Your Estimated MTD Penalty

£0

Late submission penalties £0

Late payment penalties (30 days) £0

Late payment penalties (6 months) £0

⚠️ This is a minimum estimate. HMRC can charge daily penalties if you're more than 12 months late. Interest accrues on unpaid tax from the original deadline.

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How MTD Penalties Work

Late Submission Penalties:

£200 for each missed quarterly deadline
No grace period — penalties start from day 1
Maximum £800/year if you miss all 4 quarters

Late Payment Penalties (if you owe tax):

5% of unpaid tax after 30 days late
Another 5% after 6 months late
Another 5% after 12 months late
PLUS daily interest on the unpaid amount

Example: Miss all 4 quarterly deadlines + owe £5,000 in tax (paid 8 months late):

Submission penalties: £800
Payment penalty (30 days): £250
Payment penalty (6 months): £250
Interest (8 months @ 7.75%): ~£260
Total: £1,560 in penalties + interest

Avoid this. Use MTD-compatible software, set quarterly reminders, and file on time. See our complete MTD guide for preparation steps.