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Tax calendar

Tax calendar

Tax calendar

The red text indicates an entry relevant to companies and employers, black refers to personal tax, and bold indicates an important item.

Click on an item to find out more detail of how it may affect you.

If you would like to receive email reminders before these key tax dates from our taxREMINDER system, then click here to register on our website. If you have already registered and would like to change your taxREMINDER options then click to log on.

July 2025

Thursday 31

Second payment on account 2024/25 due

Saturday 2

Deadline for submitting P46 (car) for employees whose car/fuel benefits changed during the quarter to 5th July 2025

tuesday 19

PAYE, Student loan and CIS deductions are due for the month to 5th August 2025

Monday 1

Advisory Fuel Rates

friday 19

PAYE, Student loan and CIS deductions are due for month to 5th September 2025

Sunday 5

Deadline for notifying HMRC of new sources of taxable income or gains for 2024/25 if no tax return has been issued

Sunday 19

PAYE quarterly payments are due for small employers for the pay periods 6th July 2025 to 5th October 2025

Sunday 19

PAYE, Student loan and CIS deductions are due for the month to 5th October 2025

Sunday 19

Tax and NI due under a 2024/25 PAYE Settlement Agreement

Sunday 31

Deadline for submission of 2024/25 self assessment returns if you require HMRC to compute your tax liability and/or if tax underpaid is to be collected by adjustment to your 2026/27 PAYE code

Sunday 31

Deadline for submitting 'paper' 2024/25 self assessment returns

Sunday 5

Deadline for submitting P46(car) for employees whose car/fuel benefits changed during the quarter to 5th October 2025

Wednesday 19

PAYE, Student loan and CIS deductions are due for the month to 5th November 2025

Monday 1

Advisory Fuel Rates

friday 19

PAYE, Student loan and CIS deductions are due for the month to 5th December 2025

Tuesday 30

Online filing deadline for submitting 2024/25 self assessment return if you require HMRC to collect any underpaid tax by making an adjustment to your 2026/27 tax code

Monday 19

PAYE, Student loan and CIS deductions are due for the month to 5th January 2026

Monday 19

PAYE quarterly payments are due for small employers for the pay periods 6th October 2025 to 5th January 2026

Saturday 31

Deadline for submitting your 2024/25 self assessment return (£100 automatic penalty if your return is late) and the balance of your 2024/25 liability together with the first payment on account for 2025/26 are also due

Monday 2

Deadline for submitting P46(car) for employees whose car/fuel benefits changed during the quarter to 5th January 2026

thursday 19

PAYE, Student loan and CIS deductions are due for the month to 5th February 2026

Sunday 1

Advisory Fuel Rates

Tuesday 3

5% late payment penalty on any 2024/25 outstanding tax which was due on 31st January 2026 and still remains unpaid

Thusday 19

PAYE, Student loan and CIS deductions are due for the month to 5th March 2026

tuesday 31

Last minute planning for tax year 2025/26