Tax Calendar 2025/2026

August 2025
01- Corporation Tax payments are due for companies with a year-end of 31st October.
19 - For employers operating PAYE, this is the deadline to send an Employer Payment Summary (EPS) to claim any reduction on what you’ll owe HMRC.
- It is also the deadline for employers operating PAYE to pay HMRC by post, for July.
22- Deadline for employers operating PAYE to pay HMRC electronically, for July.
31- Corporation Tax Returns (CT600 form) are due for companies with a year-end of 31st August.
September 2025
October 2025
November 2025
December 2025