UK compliance overview
Upcoming UK Tax Dates & Deadlines
A practical overview of key UK filing and payment deadlines. If you are unsure which deadlines apply to your business, book a free consultation or message us on WhatsApp for guidance.
September 2026 to January 2027
Deadlines vary by scheme and accounting period. If you are uncertain, contact us to confirm what applies to you.
For the period ending 31 July 2026, the usual online VAT return and payment deadline is 7 September. Check your VAT account for your scheme’s deadline.
File the CIS return covering payments from 6 August to 5 September 2026. Postal PAYE payments must also reach HMRC by the 19th; allow time for delivery.
Monthly electronic PAYE, NIC and CIS payments for the tax month ending 5 September 2026 are due. Quarterly payers have a different schedule.
Tell HMRC if you need to register for a 2025/26 Self Assessment return.
HMRC must receive the usual 2025/26 paper return by this date. Online filing has a later deadline.
The second 2026/27 MTD Income Tax quarterly update is due. Quarterly updates are still required despite the first-year late-submission penalty easement.
Submit the online return by this date if eligible and asking HMRC to collect the Self Assessment bill through your tax code.
The usual deadline for the 2025/26 online return and balancing payment, plus the first 2026/27 payment on account where required.
Updated 6 September 2026. This is a selection of upcoming deadlines, not a complete compliance calendar. Check your HMRC account and allow for payment processing and weekends. Company deadlines depend on the accounting period.
Unsure which deadlines apply to you?
Book a free consultation or message us on WhatsApp and we will guide you clearly.