HMRC & Companies House · 2026/27
Every tax deadline for 2026/27, in one place.
The tax year runs 6 April 2026 to 5 April 2027 — and between now and then sit a dozen dates that cost you money if they slip. This page is the calendar we keep for our clients. Bookmark it, or hand the worrying to us.
The dates that matter, in order
PAYE & CIS payments
Electronic payments reach HMRC on the 22nd (the 19th if you pay by post).
VAT return & payment
Quarter ended 30 September 2026 — online return and payment due.
Paper Self Assessment return
Last day to file the 2025/26 paper return. Online stays open until 31 January.
Online SA return (PAYE-coded)
File online by today if up to £3,000 of tax should be collected through your PAYE code.
Self Assessment — the big one
Online return for 2025/26 due, plus the balancing payment and your first 2026/27 payment on account.
VAT return & payment
Quarter ended 31 December 2026 — online return and payment due.
2026/27 tax year ends
Gather records now — dividends, mileage, pension contributions — before the year closes.
New tax year begins
2027/28 rates and allowances apply from today; payroll codes reset.
Looking ahead into 2027
P60s to employees
Every employee needs their P60 for the 2026/27 tax year.
P11D & P11D(b)
Benefits-in-kind forms filed and Class 1A National Insurance paid.
VAT returns & payments
Quarters ended 31 March and 30 June 2027 respectively.
Second payment on account
Your second 2026/27 payment on account is due.
Corporation Tax & accounts
Payment and filing run from your own year end; Companies House accounts follow a similar rhythm.
Dates above follow the standard staggered VAT quarters and the 2026/27 tax year. Your own dates can differ — company year ends, non-standard VAT stags and payroll schemes all shift the goalposts. As a client, every one of yours is tracked, filed and confirmed in writing.
Deadlines, answered
The questions this page gets asked most.
When is the Self Assessment deadline for the 2025/26 tax year?
Online returns and payment are due by midnight on 31 January 2027, covering the balancing payment plus your first 2026/27 payment on account. Paper returns close earlier, on 31 October 2026.
What are the VAT deadlines in 2026/27?
For the standard staggered quarters: 7 November 2026 (quarter ended 30 September 2026), 7 February 2027 (quarter ended 31 December 2026), 7 May 2027 (quarter ended 31 March 2027) and 7 August 2027 (quarter ended 30 June 2027). If your VAT quarter is staggered differently, your dates shift accordingly.
What happens if I miss an HMRC deadline?
Interest runs from the first day a payment is late, and late returns build penalty points under HMRC's points-based system — reach £200 and fines follow. Clients of the firm have every deadline filed well before the date.
Do company tax deadlines differ from personal ones?
Yes. Corporation tax is due nine months and one day after your company's financial year ends, and Companies House accounts follow their own calendar. Both are tracked for you as a client of the firm.
Never think about this page again
Our clients don't keep this calendar. We do.
Fixed monthly fee, every filing handled, reminders before each date — and a named accountant who already knows your position.
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