Key tax dates

The below shows the upcoming tax payment and filing deadlines that you should be aware of. It is

important to remain abreast of these deadlines to avoid penalty and interest charges.

Calendar of key tax deadlines – Employers

Task Note Deadline Period
Employers PAYE/NIC payment and CIS returns & payment due * Due on 22nd if paid electronically 19/04/2025* 05/04/2025 (month)
Employers PAYE/NIC payment and CIS returns & payment due * Due on 22nd if paid electronically 19/05/2025* 05/05/2025 (month)
Give each employee a P60 for 2024/25 31/05/2025 05/04/2025 (year)
Changes to advisory fuel rates Previous rates can be used until 30/06/2025 if desired. 01/06/2025 01/06/2025 - 31/08/2025
Employers PAYE/NIC payment and CIS returns & payment due * Due on 22nd if paid electronically 19/06/2025* 05/06/2025 (month)
PAYE settlement agreement application deadline 05/07/2025 05/04/2025 (year)
P11D information for 2024/25 to be given to employees where relevant 06/07/2025 05/04/2025 (year)
Deadline for notifying HMRC of shares & share options awarded to employees 06/07/2025 05/04/2025 (year)
Deadline for P11D and P11Db forms to be submitted to HMRC. 06/07/2025 05/04/2025 (year)
Employers PAYE/NIC payment and CIS returns & payment due * Due on 22nd if paid electronically 19/07/2025* 05/07/2025 (month)
Class 1A NICs payment due to HMRC * Due on 22nd if paid electronically 19/07/2025* 05/04/2025 (year)
Task Deadline Tax Year
Due date for second payment on account for 2024/25 31/07/2025 2024/25
Deadline for notifying HMRC of chargeability , if not already within Self-Assessment 05/10/2025 2024/25
Paper tax return filing deadline 31/10/2025 2024/25
Online return filing deadline, if you wish for HMRC to collect tax due of up to £3,000 via your 2026/27 tax code 30/12/2025 2024/25
Online return filing deadline payment of tax for 2024/25 and first payment on account for 2025/26 31/01/2026 2024/25
Accounting period end CT600 filling date Corporation tax payment date
30/04/2024 30/04/2025 01/02/2025
31/05/2024 31/05/2025 01/03/2025
30/06/2024 30/06/2025 01/04/2025
31/07/2024 31/07/2025 01/05/2025
31/08/2024 31/08/2025 01/06/2025
30/09/2024 30/09/2025 01/07/2025
31/10/2024 31/10/2025 01/08/2025
30/11/2024 30/11/2025 01/09/2025
31/12/2024 31/12/2025 01/10/2025
31/01/2025 31/01/2026 01/11/2025
29/02/2025 28/02/2026 01/12/2025
Quarterly/monthlyVAT return period end Return and payment deadline
29/02/2025 07/04/2025
31/03/2025 07/05/2025
30/04/2025 07/06/2025
31/05/2025 07/07/2025
30/06/2025 07/08/2025
31/07/2025 07/09/2025
31/08/2025 07/10/2025
30/09/2025 07/11/2025
31/10/2025 07/12/2025
30/11/2025 07/01/2026
31/12/2025 07/02/2026