Resources · Key tax dates

Key UK tax dates & deadlines 2026/27

The deadlines every UK business owner should have in the diary for the 2026/27 tax year, in one place. The tax year runs from 6 April 2026 to 5 April 2027.

Never miss a deadline — talk to Buzz

Some dates depend on your own year end. Corporation Tax, company accounts and VAT deadlines are set relative to your accounting period, so the exact dates differ per business. The fixed calendar dates below (Self Assessment, payroll) apply to everyone. Talk to Buzz for your specific deadlines.

Self Assessment

Self Assessment (Income Tax)	What's due
5 October 2026	Deadline to register for Self Assessment if you're new to it (for 2025/26 income)
31 October 2026	Deadline for a paper tax return for 2025/26
31 January 2027	Deadline for the online tax return for 2025/26, and to pay any tax owed plus your first payment on account
31 July 2027	Second payment on account for 2025/26 due

VAT

VAT	What's due
1 month + 7 days after each VAT period ends	VAT return filed and payment made (standard quarterly cycle, under Making Tax Digital)
Ongoing	Register for VAT within 30 days of your taxable turnover exceeding £90,000 in any rolling 12 months

PAYE & payroll

PAYE & payroll (employers)	What's due
On or before each payday	Submit your Full Payment Submission (FPS) to HMRC
22nd of the following month	Pay PAYE tax and National Insurance to HMRC (electronic payment; 19th if paying by post)
31 May 2027	Give employees their P60 for 2026/27
6 July 2027	Report expenses and benefits (P11D) for 2026/27
22 July 2027	Pay any Class 1A National Insurance on benefits

Payroll running you ragged? See how our managed payroll service keeps these filed automatically.

Corporation Tax & Companies House

Corporation Tax & Companies House (limited companies)	What's due
9 months + 1 day after your year end	Pay your Corporation Tax
12 months after your year end	File your Company Tax Return (CT600) with HMRC
9 months after your year end	File your annual accounts with Companies House (private companies)
Each year on your review date	File your confirmation statement with Companies House

Making Tax Digital

Making Tax Digital	What's due
6 April 2026	MTD for Income Tax begins for sole traders and landlords with qualifying income over £50,000
6 April 2027	MTD for Income Tax extends to those with qualifying income over £30,000

See our Making Tax Digital guide for the full picture on what's changing and when.

Source: gov.uk Self Assessment, VAT, PAYE, Corporation Tax and Companies House deadline guidance, checked July 2026. Dates that fall on a weekend or bank holiday may be treated as due the next working day for some taxes.

Plan ahead