Accounting Deadliness

UK Tax Dates and Deadlines.

The tax year runs from the 6th of April one year to the 5th of April the following year.

Accounts of Self-Employed individuals or those who declare additional income, capital gains, and claim reliefs are calculated according to these dates.

They submit their Tax Returns, known as Form SA100.

Tax Returns can be submitted from first day of new tax year.

All employed pay their tax through PAYE.


6th July– Form P11D filing deadline to HMRC – directors and employees declare expenses and benefits.

31 July – due date of the second of two payments on account towards your tax bill. It includes your projected tax liability and Class 4 National Insurance Contributions for SMEs

30 October – last day for paying your Class 2 NIC (NI Contributions).

31 October: paper filing of tax return

30 December: last day to choose to pay any tax due through PAYE code, for those who are also employed, but only if tax return is submitted before 30 December.

31 January – deadline for online self-assessment filing (method preferred by HMRC). It is also the deadline for paying any income tax due, Class 4NIC and your first payment on account for next year.

Time left to 2022-23 Tax Return Submission Deadline 31st Jan 2024