Paper Self Assessment Tax Return 2025 2025 Corvette. If you’re doing a paper tax return, you must submit it by midnight 31 october 2024. Deadline for submitting an online return if you’re doing an online tax return, you must submit it.
In those circumstances, the deadline for a paper tax return submission is 31 january 2025. Electronically filed tax returns have a submission deadline of 31 january 2025.