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MTD Quarterly Deadline Calculator

The four quarterly update deadlines and the tax return date for Making Tax Digital — for the tax year you choose.

Your MTD deadlines — 2026/27

Four quarterly updates (cumulative, year-to-date), then one tax return.

Quarter 1 · period to 5 July7 August 2026
Quarter 2 · period to 5 October7 November 2026
Quarter 3 · period to 5 January7 February 2027
Quarter 4 · period to 5 April7 May 2026
Tax return31 January 2028

Want these in your inbox — and a reminder before each one?

Based on 2026/27 UK tax rules · GOV.UK source · This is an estimate, not personal tax advice — always check your own circumstances with HMRC or a qualified accountant.

Illustration for the mtd deadline calculator

How the MTD timetable works

Under Making Tax Digital for Income Tax you send HMRC four quarterly updates and one tax return each tax year. The standard quarters end on 5 July, 5 October, 5 January and 5 April, and each update is due about five weeks later — on 7 August, 7 November, 7 February and 7 May.

Each update is cumulative: you report the running year-to-date total, not just the latest three months. If you spot a mistake later, you simply correct the total in your next update. The tax return, due by 31 January after the tax year ends, is where you confirm everything and account for any reliefs. HMRC previously called this step the final declaration.

For the full picture, read our guide on Making Tax Digital deadlines, or check whether MTD applies to you in the first place.

Common questions

When are the MTD quarterly update deadlines?
For standard quarterly periods the four deadlines are 7 August, 7 November, 7 February and 7 May. Each update is cumulative — a running year-to-date total, not just that quarter.
When is the tax return due?
Your tax return (HMRC previously called this step the final declaration) is due by 31 January following the end of the tax year, the same date Self Assessment has always used. Your tax is also payable by 31 January.
Can I choose calendar quarters instead?
Yes. You can elect calendar update periods (1 April–30 June, and so on) once, before your first update. The deadlines stay the same.

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