This deadline is relevant to individuals who need to complete a self assessment tax return for 2023/24 and wish to file the return in a ‘paper’ form. Self assessment returns submitted after this date must be submitted electronically.
Please note that this deadline is not relevant if we are going to submit an online return for you or you are going to deal with the completion of an online return yourself. The deadline for submission of online returns is 31 January 2026.
If we are already dealing with this matter on your behalf you need take no action.
Deadline for submission of 2024/25 self assessment returns if you require HMRC to compute your tax liability and/or if tax underpaid is to be collected by adjustment to your 2025/26 PAYE code
This deadline is only relevant for those individuals who complete a ‘paper’ self assessment tax return and who are employees. Where you have an underpayment you may request that HMRC collect the tax outstanding by making an adjustment to your tax code for the year 2025/26.
Please note that where your return is submitted online then the filing deadline for ‘coding out’ is 30 December 2025.
If we are already dealing with this matter on your behalf you need take no action.