Self Assessment
Tell HMRC you need a tax return
For 2025/26 if you have not filed before, or were registered but did not need to file for 2024/25. Check whether you need to register or reactivate your account.
Check HMRC guidanceDates worth knowing
A little more time
to be prepared.
Find the deadlines that matter to you. Save them to your calendar, then confirm your own filing and payment dates with HMRC.
Plan ahead
Your deadline diary.
The download adds all-day entries to a compatible calendar. It is a one-off copy, not a subscription or automatic reminder service. Set any reminders in your calendar app.
53 deadlines in this edition.
No dates match this selection in this edition. Check your HMRC account for your own deadlines.
October 2026
PAYE reporting
Employer Payment Summary, if required
For the tax month ending 5 October 2026: report no employee payments, or send applicable recoveries (such as statutory pay) to reduce this month's PAYE bill. Not required for every employer each month; previously reported inactivity may cover the period.
Check HMRC guidanceCIS
Monthly CIS return
For the tax month ending 5 October 2026. Submit your contractor return, or report no payments / inactivity as appropriate.
Check HMRC guidanceEmployment benefits
PAYE Settlement Agreement: cheque payment
Tax and Class 1B National Insurance for 2025/26 under a PAYE Settlement Agreement, if paying by cheque.
Check HMRC guidancePAYE
Monthly electronic PAYE & CIS payment
For the tax month ending 5 October 2026. Only monthly payers; agreed quarterly payers use their quarter deadline. Cheques must arrive by the 19th.
Check HMRC guidanceEmployment benefits
PAYE Settlement Agreement: electronic payment
Tax and Class 1B National Insurance for 2025/26 under a PAYE Settlement Agreement, if paying electronically.
Check HMRC guidanceSelf Assessment
Paper Self Assessment return
HMRC must receive the 2025/26 paper return by this date. Special cases can have different deadlines.
Check HMRC guidanceNovember 2026
Making Tax Digital
Second MTD Income Tax update
2026/27 quarterly update, only if you are within MTD for Income Tax. Updates are cumulative; standard and calendar periods share the same deadline. This is not a tax-payment deadline.
Check HMRC guidancePAYE reporting
Employer Payment Summary, if required
For the tax month ending 5 November 2026: report no employee payments, or send applicable recoveries (such as statutory pay) to reduce this month's PAYE bill. Not required for every employer each month; previously reported inactivity may cover the period.
Check HMRC guidanceCIS
Monthly CIS return
For the tax month ending 5 November 2026. Submit your contractor return, or report no payments / inactivity as appropriate.
Check HMRC guidancePAYE
Monthly electronic PAYE & CIS payment
For the tax month ending 5 November 2026. Only monthly payers; agreed quarterly payers use their quarter deadline. Cheques must arrive by the 19th.
Check HMRC guidanceDecember 2026
PAYE reporting
Employer Payment Summary, if required
For the tax month ending 5 December 2026: report no employee payments, or send applicable recoveries (such as statutory pay) to reduce this month's PAYE bill. Not required for every employer each month; previously reported inactivity may cover the period.
Check HMRC guidanceCIS
Monthly CIS return
For the tax month ending 5 December 2026. Submit your contractor return, or report no payments / inactivity as appropriate.
Check HMRC guidancePAYE
Monthly electronic PAYE & CIS payment
For the tax month ending 5 December 2026. Only monthly payers; agreed quarterly payers use their quarter deadline. Cheques must arrive by the 19th.
Check HMRC guidanceSelf Assessment
Online return for tax-code collection
File the 2025/26 return by this date if you want eligible tax collected through your PAYE tax code. Eligibility conditions apply.
Check HMRC guidanceJanuary 2027
PAYE reporting
Employer Payment Summary, if required
For the tax month ending 5 January 2027: report no employee payments, or send applicable recoveries (such as statutory pay) to reduce this month's PAYE bill. Not required for every employer each month; previously reported inactivity may cover the period.
Check HMRC guidanceCIS
Monthly CIS return
For the tax month ending 5 January 2027. Submit your contractor return, or report no payments / inactivity as appropriate.
Check HMRC guidancePAYE
Monthly electronic PAYE & CIS payment
For the tax month ending 5 January 2027. Only monthly payers; agreed quarterly payers use their quarter deadline. Cheques must arrive by the 19th.
Check HMRC guidanceSelf Assessment
First payment on account
First advance payment towards 2026/27, if payments on account apply. This is additional to any 2025/26 balancing payment.
Check HMRC guidanceSelf Assessment
Online Self Assessment return & balance
Submit the 2025/26 online return and pay any remaining tax for that year by 11:59pm. Allow time for payment to reach HMRC.
Check HMRC guidanceFebruary 2027
Making Tax Digital
Third MTD Income Tax update
2026/27 quarterly update, only if you are within MTD for Income Tax. Updates are cumulative; standard and calendar periods share the same deadline. This is not a tax-payment deadline.
Check HMRC guidancePAYE reporting
Employer Payment Summary, if required
For the tax month ending 5 February 2027: report no employee payments, or send applicable recoveries (such as statutory pay) to reduce this month's PAYE bill. Not required for every employer each month; previously reported inactivity may cover the period.
Check HMRC guidanceCIS
Monthly CIS return
For the tax month ending 5 February 2027. Submit your contractor return, or report no payments / inactivity as appropriate.
Check HMRC guidancePAYE
Monthly electronic PAYE & CIS payment
For the tax month ending 5 February 2027. Only monthly payers; agreed quarterly payers use their quarter deadline. Cheques must arrive by the 19th.
Check HMRC guidanceMarch 2027
PAYE reporting
Employer Payment Summary, if required
For the tax month ending 5 March 2027: report no employee payments, or send applicable recoveries (such as statutory pay) to reduce this month's PAYE bill. Not required for every employer each month; previously reported inactivity may cover the period.
Check HMRC guidanceCIS
Monthly CIS return
For the tax month ending 5 March 2027. Submit your contractor return, or report no payments / inactivity as appropriate.
Check HMRC guidancePAYE
Monthly electronic PAYE & CIS payment
For the tax month ending 5 March 2027. Only monthly payers; agreed quarterly payers use their quarter deadline. Cheques must arrive by the 19th.
Check HMRC guidanceApril 2027
Tax year
2026/27 tax year ends
The final day of the 2026/27 UK tax year. Review your records and discuss any year-end actions in advance; this is not a universal tax-return or payment deadline.
Check HMRC guidancePAYE reporting
Employer Payment Summary, if required
For the tax month ending 5 April 2027: report no employee payments, or send applicable recoveries (such as statutory pay) to reduce this month's PAYE bill. Not required for every employer each month; previously reported inactivity may cover the period.
Check HMRC guidanceCIS
Monthly CIS return
For the tax month ending 5 April 2027. Submit your contractor return, or report no payments / inactivity as appropriate.
Check HMRC guidancePAYE
Monthly electronic PAYE & CIS payment
For the tax month ending 5 April 2027. Only monthly payers; agreed quarterly payers use their quarter deadline. Cheques must arrive by the 19th.
Check HMRC guidanceMay 2027
Making Tax Digital
Fourth MTD Income Tax update
2026/27 quarterly update, only if you are within MTD for Income Tax. Updates are cumulative; standard and calendar periods share the same deadline. This is not a tax-payment deadline.
Check HMRC guidancePAYE reporting
Employer Payment Summary, if required
For the tax month ending 5 May 2027: report no employee payments, or send applicable recoveries (such as statutory pay) to reduce this month's PAYE bill. Not required for every employer each month; previously reported inactivity may cover the period.
Check HMRC guidanceCIS
Monthly CIS return
For the tax month ending 5 May 2027. Submit your contractor return, or report no payments / inactivity as appropriate.
Check HMRC guidancePAYE
Monthly electronic PAYE & CIS payment
For the tax month ending 5 May 2027. Only monthly payers; agreed quarterly payers use their quarter deadline. Cheques must arrive by the 19th.
Check HMRC guidancePayroll year end
Give employees their P60
Provide a 2026/27 P60 to each employee who was on your payroll and working for you on 5 April 2027.
Check HMRC guidanceJune 2027
PAYE reporting
Employer Payment Summary, if required
For the tax month ending 5 June 2027: report no employee payments, or send applicable recoveries (such as statutory pay) to reduce this month's PAYE bill. Not required for every employer each month; previously reported inactivity may cover the period.
Check HMRC guidanceCIS
Monthly CIS return
For the tax month ending 5 June 2027. Submit your contractor return, or report no payments / inactivity as appropriate.
Check HMRC guidancePAYE
Monthly electronic PAYE & CIS payment
For the tax month ending 5 June 2027. Only monthly payers; agreed quarterly payers use their quarter deadline. Cheques must arrive by the 19th.
Check HMRC guidanceJuly 2027
Employment benefits
P11D / P11D(b) reporting
Report 2026/27 benefits and Class 1A National Insurance where required, and provide the relevant benefit information to employees. Payrolled benefits have different reporting treatment.
Check HMRC guidanceEmployment benefits
Class 1A National Insurance: cheque payment
Payment for 2026/27 benefits must reach HMRC by this date if paying by cheque.
Check HMRC guidancePAYE reporting
Employer Payment Summary, if required
For the tax month ending 5 July 2027: report no employee payments, or send applicable recoveries (such as statutory pay) to reduce this month's PAYE bill. Not required for every employer each month; previously reported inactivity may cover the period.
Check HMRC guidanceCIS
Monthly CIS return
For the tax month ending 5 July 2027. Submit your contractor return, or report no payments / inactivity as appropriate.
Check HMRC guidanceEmployment benefits
Class 1A National Insurance: electronic payment
Electronic payment for 2026/27 benefits. Check the correct reference and bank processing time.
Check HMRC guidancePAYE
Monthly electronic PAYE & CIS payment
For the tax month ending 5 July 2027. Only monthly payers; agreed quarterly payers use their quarter deadline. Cheques must arrive by the 19th.
Check HMRC guidanceSelf Assessment
Second payment on account
Second advance payment towards 2026/27, if applicable. Check your HMRC statement and allow for your payment method.
Check HMRC guidanceAugust 2027
Making Tax Digital
First MTD Income Tax update
2027/28 quarterly update, only if you are within MTD for Income Tax. Updates are cumulative; standard and calendar periods share the same deadline. This is not a tax-payment deadline.
Check HMRC guidancePAYE reporting
Employer Payment Summary, if required
For the tax month ending 5 August 2027: report no employee payments, or send applicable recoveries (such as statutory pay) to reduce this month's PAYE bill. Not required for every employer each month; previously reported inactivity may cover the period.
Check HMRC guidanceCIS
Monthly CIS return
For the tax month ending 5 August 2027. Submit your contractor return, or report no payments / inactivity as appropriate.
Check HMRC guidancePAYE
Monthly electronic PAYE & CIS payment
For the tax month ending 5 August 2027. Only monthly payers; agreed quarterly payers use their quarter deadline. Cheques must arrive by the 19th.
Check HMRC guidanceSeptember 2027
PAYE reporting
Employer Payment Summary, if required
For the tax month ending 5 September 2027: report no employee payments, or send applicable recoveries (such as statutory pay) to reduce this month's PAYE bill. Not required for every employer each month; previously reported inactivity may cover the period.
Check HMRC guidanceCIS
Monthly CIS return
For the tax month ending 5 September 2027. Submit your contractor return, or report no payments / inactivity as appropriate.
Check HMRC guidancePAYE
Monthly electronic PAYE & CIS payment
For the tax month ending 5 September 2027. Only monthly payers; agreed quarterly payers use their quarter deadline. Cheques must arrive by the 19th.
Check HMRC guidanceYour business has its own timetable
Dates that depend on you.
These are not added to the download because the right date depends on your accounting period, payment arrangement or payroll.
VAT returns & payment
Usually 1 month + 7 days after your VAT period
Use the dates in your VAT account. Annual accounting and payments on account can work differently; allow payment-processing time.
Official guidanceCorporation Tax payment
Usually 9 months + 1 day after the accounting period
Large and very large companies can pay by instalments. A company’s tax accounting period can differ from its accounts period.
Official guidanceCompany Tax Return
12 months after the tax accounting period ends
The filing deadline is later than the usual Corporation Tax payment deadline. First accounts can cover more than one tax accounting period.
Official guidancePrivate-company annual accounts
Usually 9 months after the financial year ends
First accounts are normally due 21 months after incorporation. Check Companies House for your actual deadline, especially if you change your year end.
Official guidancePayroll reporting (FPS)
Usually on or before each payday
Your payroll payment date drives this deadline. The monthly payment date does not replace your reporting obligations.
Official guidanceQuarterly PAYE payments
22 July, October, January & April electronically
Only where quarterly payment applies. The quarters end on 5 July, October, January and April. Postal cheque deadlines are the 19th.
Official guidanceHCA previewOfficial sources checked 23 September 2026. HCA editorial review is pending before public launch. This edition ends 22 September 2027; recheck the official source before acting.
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