Missing a tax deadline means penalties and interest. Here are the key UK tax dates for the 2026/27 tax year (6 April 2026 to 5 April 2027) for individuals, sole traders, landlords, employers and limited companies. Bookmark this page, or contact us and we’ll keep track of your deadlines for you.
Every month
- 19th: CIS monthly return due for contractors (for the tax month ending on the 5th).
- 22nd: PAYE and National Insurance payment due to HMRC if you pay electronically (19th if you pay by cheque).
- On or before each payday: employers send payroll information to HMRC through RTI (Full Payment Submission).
Every quarter
- VAT returns: usually due 1 month and 7 days after the end of each VAT quarter, with payment by the same date.
- Making Tax Digital for Income Tax: if MTD applies to you, quarterly updates are due by 7 August, 7 November, 7 February and 7 May.
Key dates for 2026/27
April 2026
- 6 April 2026: new tax year starts. Making Tax Digital for Income Tax begins for sole traders and landlords with qualifying income over £50,000.
- 22 April 2026: final PAYE payment for the 2025/26 tax year (electronic payments).
May 2026
- 31 May 2026: give your employees their P60 for 2025/26.
July 2026
- 6 July 2026: P11D and P11D(b) forms due for employee benefits and expenses in 2025/26.
- 22 July 2026: Class 1A National Insurance on benefits due (electronic payments).
- 31 July 2026: second payment on account for 2025/26 Self Assessment.
October 2026
- 5 October 2026: register for Self Assessment if you became self-employed or had new untaxed income in 2025/26.
- 31 October 2026: deadline for paper Self Assessment tax returns for 2025/26.
December 2026
- 30 December 2026: file your 2025/26 return online by this date if you want tax under £3,000 collected through your PAYE tax code (where eligible).
January 2027
- 31 January 2027: deadline for online Self Assessment tax returns for 2025/26. Pay any balance of tax owed for 2025/26 and your first payment on account for 2026/27.
February 2027
- 1 February 2027: an automatic £100 penalty applies to 2025/26 tax returns not filed by 31 January. Further penalties and interest follow if the return or tax is still outstanding.
April 2027
- 5 April 2027: end of the 2026/27 tax year. Last day to use this year’s ISA allowance.
- 6 April 2027: Making Tax Digital extends to sole traders and landlords with qualifying income over £30,000. New property income tax rates (22%, 42% and 47%) begin.
Limited company deadlines
These depend on your company’s own year end:
- Corporation tax payment: 9 months and 1 day after your year end (for most small companies).
- Annual accounts to Companies House: 9 months after your year end.
- Corporation tax return (CT600): 12 months after your year end.
- Confirmation statement: at least once every 12 months.
See our limited company accounts service.
Selling property
- Within 60 days of completion: report and pay Capital Gains Tax on the sale of UK residential property that isn’t your main home.
Never miss a deadline
Accountancy N Tax Services tracks every deadline for our clients and reminds you well in advance. Based in Wallington, we help sole traders, landlords and limited companies across Sutton, Croydon and South London with Self Assessment, VAT, payroll and Making Tax Digital.
Call 020 7112 9098 or email info@accountancyntax.co.uk.
Dates are for general guidance and may change. Where a deadline falls on a weekend or bank holiday, payment may need to reach HMRC earlier. Check with us for your own deadlines.