UK Accounting Calendar 2026

Staying on top of your accounting and tax obligations is essential for running a successful business in the UK. The 2026 UK Accounting Calendar highlights the most important dates for Self Assessment, Corporation Tax, VAT, PAYE, and other key reporting obligations. Use this calendar to stay organised, avoid late penalties, and plan ahead.

Monthly Breakdown

January 2026

31 January 2026
$
Deadline for filing online Self Assessment tax returns for the 2024/25 tax year
$
Payment deadline for any tax owed under Self Assessment
$
First Payment on Account for the 2025/26 tax year

February 2026

1 February 2026
$
Interest and late filing penalties begin if Self Assessment deadline was missed.

March 2026

31 March 2026
$
End of the accounting year for many companies (if following the tax year model)

April 2026

5 April 2026
$
End of the 2025/26 tax year
6 April 2026
$
Start of the 2026/27 tax year
$
MTD for Income Tax begins for those earning over £50,000 annually
19 April 2026
$
PAYE and Class 1 NICs payment deadline for March 2026

May 2026

31 May 2026
$
Deadline to issue P60s to employees for the 2025/26 tax year

July 2026

6 July 2026
$
Deadline to file P11D and P11D(b) forms
$
Provide employees with P11D forms
31 July 2026
$
Second Payment on Account for Self Assessment (2025/26)

October 2026

5 October 2026
$
Deadline to register for Self Assessment if you became self-employed during the 2025/26 tax year
31 October 2026
$
Deadline to submit paper tax returns (if not filing online)

December 2026

30 December 2026
$
Deadline to submit online tax returns if you want HMRC to collect unpaid tax through PAYE

Key Monthly PAYE and VAT Deadlines

$
PAYE/NICs payment deadline: 19th of each month (postal) or 22nd (electronic)
$
VAT Returns: Due 1 month and 7 days after the end of the VAT period

Useful Tips to Stay Compliant

$
Use accounting software to set reminders and automate tasks
$
Speak with a qualified accountant to manage more complex tax situations
$
Monitor updates from HMRC on new changes such as Making Tax Digital

Need help staying on track with your tax deadlines? At Front Edge Accountants, we help individuals and businesses across the UK manage their accounting with clarity and confidence. Contact us today for tailored support.

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