Are deadlines official HMRC dates?
We publish commonly referenced UK deadlines for planning. Always confirm dates on GOV.UK before advising clients.
UK tax deadline tracker for accountants
Reference dates for HMRC, payroll, and company filing cycles. Pair this with client document checklists and automated reminders in ComplyChase AI.
Automate document chasing| When | Deadline / event | Why accountants chase documents |
|---|---|---|
| 31 January | Self Assessment online payment | Balancing payment and payments on account for the previous tax year (where applicable). |
| 5 April | Tax year end | End of the UK personal tax year — common trigger for SA document collection. |
| 6 April | New tax year starts | Start of the new personal tax year; update client record requests. |
| 31 May | P60 distribution | Employers issue P60s — often requested for Self Assessment evidence. |
| 6 July | P11D filing deadline | Benefits in kind reporting to HMRC for employers. |
| Quarterly | VAT return periods | Deadlines depend on the client’s VAT stagger group — chase records before each period end. |
| 9 months after year-end | Company accounts filing (typical) | Companies House filing window varies — confirm per company; chase year-end packs early. |
| Ongoing | AML ID refresh | Review passport and address proof expiry before reviews — not a single HMRC date. |
General reference only — not tax advice. Confirm dates on GOV.UK and with your professional body.