🎉 Holidays · every year
When is the Self Assessment deadline?
Sunday, 31 January 2027
The Self Assessment deadline 2027 is on Sunday, 31 January 2027 — that's 162 days from today.
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Happening now
Miss the 31 January online deadline and HMRC issues an automatic penalty, whatever the amount of tax due.
How the date is worked out
Midnight on 31 January — the deadline for filing an online Self Assessment return and paying any tax owed for the tax year that ended the previous 5 April.
The Self Assessment deadline dates
| Year | Date | Day | Countdown |
|---|---|---|---|
| 2024 | 31 January | Wednesday | 3 years ago |
| 2025 | 31 January | Friday | 19 months ago |
| 2026 | 31 January | Saturday | 7 months ago |
| 2027 | 31 January | Sunday | in 5 months |
| 2028 | 31 January | Monday | in 18 months |
| 2029 | 31 January | Wednesday | in 2 years |
| 2030 | 31 January | Thursday | in 3 years |
| 2031 | 31 January | Friday | in 4 years |
Frequently asked
How many days until the Self Assessment deadline?
162 days — Sunday, 31 January 2027.
Which day of the week does the Self Assessment deadline fall on in 2027?
Sunday.
Is the Self Assessment deadline always on the same date?
Midnight on 31 January — the deadline for filing an online Self Assessment return and paying any tax owed for the tax year that ended the previous 5 April.
When is the Self Assessment deadline in 2028?
Monday, 31 January 2028.
When was the Self Assessment deadline in 2026?
Saturday, 31 January 2026 — 7 months ago.