How many days until UK Self Assessment deadline?
There are 130 days until UK Self Assessment deadline. It falls on Sunday, 31 January 2027, which is 18.6 weeks or 4.3 months from today.
When is UK Self Assessment deadline 2027?
UK Self Assessment deadline falls on Sunday, 31 January 2027. That is day 31 of 2027, inside ISO week 4, with 334 days left in the year after it. The paper filing deadline for the same tax year falls three months earlier, on 31 October.
It is marked chiefly in the United Kingdom, and it sits in the deadlines part of this catalogue. It occupies a single calendar day, so the count above is unambiguous.
How is the date of UK Self Assessment deadline decided?
Fixed on 31 January. Online returns for the tax year ending on the previous 5 April, and the balancing payment, are both due by that date.
That matters for a countdown because a rule can be evaluated for any year, this one or one twenty years out, without waiting for an announcement. Every date on this page comes out of that rule rather than out of a list someone typed in, so nothing here can go stale when a year turns over. Where a date is set afresh each year instead, this catalogue leaves the event out rather than guess at it.
What day of the week is UK Self Assessment deadline on?
In 2027 it is a Sunday. Across the next 10 years it lands on 7 different weekdays: Sunday 1 time, Monday 2 times, Tuesday 1 time, Wednesday 2 times, Thursday 1 time, Friday 1 time, Saturday 2 times. A fixed calendar date moves forward one weekday a year and two across a leap year, which is why the pattern takes twenty eight years to repeat.
UK Self Assessment deadline dates for the next few years
| Year | Date | Weekday | Days away |
|---|---|---|---|
| 2026 | 31 January 2026 | Saturday | passed |
| 2027 | 31 January 2027 | Sunday | 130 |
| 2028 | 31 January 2028 | Monday | 495 |
| 2029 | 31 January 2029 | Wednesday | 861 |
| 2030 | 31 January 2030 | Thursday | 1,226 |
| 2031 | 31 January 2031 | Friday | 1,591 |
How many weeks until UK Self Assessment deadline?
Every unit at once, counted to 31 January 2027. The live rows update every second while the page is open.
| Question | Answer |
|---|---|
| How many months until UK Self Assessment deadline? | 4.3 |
| How many weeks until UK Self Assessment deadline? | 18.6 |
| How many days until UK Self Assessment deadline? | 130 |
| How many hours until UK Self Assessment deadline? | 3,120 |
| How many minutes until UK Self Assessment deadline? | 187,200 |
| How many seconds until UK Self Assessment deadline? | 11,232,000 |
What else happens around UK Self Assessment deadline?
Holidays and observances from the main calendar that sit within twelve days of 31 January, closest first. Each one links to its own day counter.
| Date | Also falls near this | Days apart |
|---|---|---|
| 26 January 2027 | Australia Day | 5 days before |
| 24 January 2027 | International Day of Education | 7 days before |
More deadlines countdowns
Frequently asked questions about UK Self Assessment deadline
- How many days until UK Self Assessment deadline?
- 130 days. UK Self Assessment deadline falls on Sunday, 31 January 2027.
- When is UK Self Assessment deadline in 2027?
- Sunday, 31 January 2027.
- Is the date of UK Self Assessment deadline the same every year?
- No. Fixed on 31 January. Online returns for the tax year ending on the previous 5 April, and the balancing payment, are both due by that date.
- What day of the week is UK Self Assessment deadline?
- Sunday in 2027. It is day 31 of the year, with 334 days left after it.
- How many weeks until UK Self Assessment deadline?
- 18.6 weeks, which is 18 full weeks and 4 spare days.
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