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Tax Tips & Planning

MTD quarterly reporting: a freelancer compliance guide

6 min read

MTD replaces the annual tax return with a quarterly rhythm. You send four updates during the year, then a final declaration after the year ends. Each quarter has a deadline. Miss it, and you get a point. Four points, and a £200 penalty kicks in. The system rewards consistency.

The quarterly calendar

The tax year runs 6 April to 5 April. Quarters align to that:

  • Q1: 6 April to 5 July. Submit by 5 August
  • Q2: 6 July to 5 October. Submit by 5 November
  • Q3: 6 October to 5 January. Submit by 5 February
  • Q4: 6 January to 5 April. Submit by 5 May

The final declaration, which replaces the old Self Assessment return, is due by 31 January following the tax year. So for 2026/27, the final declaration is due by 31 January 2028.

What goes in each quarterly update

Each update summarises your income and expenses for that quarter. Your software calculates it from your digital records. You review the figures, confirm they look right, and submit. No need to attach receipts or invoices; HMRC can request those later if they have questions.

The quarterly update is a summary, not a full audit. If you categorise a coffee as 'office supplies' when it was client entertainment, you can correct it in the next quarter or at the final declaration. The system allows amendments.

Points and penalties

One point per missed deadline. Points reset after two years of on-time submissions, or when you reach the penalty threshold. So if you miss Q1 and Q2, you have 2 points. If you then submit Q3 and Q4 on time, and the next year's Q1 and Q2 on time, your points drop to zero.

Set a calendar reminder for the 1st of each submission month. That gives me a buffer. Never missed a deadline.

- UK freelancer

Why quarterly helps

For many freelancers, the shift from annual to quarterly is an upgrade. You see your profit position every three months instead of once a year. Tax surprises shrink. Cash flow planning gets easier. The admin burden spreads across the year instead of stacking in January.

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