DIARY OF MAIN TAX EVENTS MAY 2026

7 May 2026 – VAT returns and payments due for Accounting Quarter period ending 31 March.

18 May 2026 - Mandatory Tax Advisor Registration (TAR) introduced, enforcing a new mandatory registration regime for tax advisers who, as part of their business, interact with HMRC on behalf of their clients

22 May 2026 – Deadline for electronic remittance of PAYE, NICs and CIS to HMRC.