HMRC is charging you £10/day right now if you missed self-assessment

If you missed the 31 January 2026 self-assessment deadline, daily penalties of £10 started on 1 March 2026 . That's 16 days of penalties so far — roughly £260+ on top of the £100 initial fine. The only way to stop the daily charges: file your return . Even with estimated figures. Even if you can't pay. Filing stops the clock. You can amend later. The penalty timeline When What Running total 1 day late £100 automatic penalty £100 3 months (1 March 2026) £10/day, up to 90 days £100 + £10/day 6 months £300 or 5% of tax £1,300+ 12 months Another £300 or 5% £1,600+ As of today (16 March), you're at roughly £260 in filing penalties alone — before late payment interest. What to do right now Log into Government Gateway Start your self-assessment return Use best estimates if you don't have exact figures Submit today If you can't pay, call 0300 200 3822 for a Time to Pay plan An estimated return filed today is infinitely better than a perfect return filed next month. Can you get the penalties ca