Question 1

When is the self assessment deadline?

admin · Accepted Answer

For a standard tax year (6 April to 5 April):

Paper tax returns: deadline is usually 31 October following the end of the tax year.
Online tax returns and payment of tax: deadline is usually 31 January following the end of the tax year.

So for the tax year ending 5 April 2025, the online filing and payment deadline is 31 January 2026.

Question 2

When is the self assessment deadline?

admin · Accepted Answer

For a standard tax year (6 April to 5 April):

Paper tax returns: deadline is usually 31 October following the end of the tax year.
Online tax returns and payment of tax: deadline is usually 31 January following the end of the tax year.

So for the tax year ending 5 April 2025, the online filing and payment deadline is 31 January 2026.