HMRC has confirmed £10 daily charges every day in June for UK households that still haven’t filed their self assessment tax returns. Those who failed to send a tax return to HMRC by the deadline of January 31, 2026, will have already received an automatic £100 fixed penalty, even if they had no tax to pay, or if any tax due was paid on time. And if your tax return still hasn’t been submitted, the penalties are now even greater. HMRC will issue additional daily penalties of £10 per day for every day your tax return is late, up to a maximum of £900.

These daily penalties began rolling out from May – three months after the initial January 31 submission deadline – and will continue into June for those who still haven’t filed. So every day that your tax return is late means another £10 penalty and the charges will then increase once again if you leave it for six months.

At this point, HMRC will charge a further penalty of 5% of the tax due or £300, whichever is greater, and after 12 months, you’ll be hit with another 5% or £300 charge, again whichever is the greatest.

Additionally, if you pay your tax late, you’ll also get penalties of 5% of the tax unpaid at 30 days, six months and 12 months. If tax remains unpaid after the deadline, interest will also be charged on the amount owed in addition to the penalties above.

Confirming the penalties for late self assessment tax returns, HMRC said: “If you send your tax return late you’ll get the following late filing penalties:

• an initial £100 penalty
• after 3 months, additional daily penalties of £10 per day, up to a maximum of £900
• after 6 months, a further penalty of 5% of the tax due or £300, whichever is greater
• after 12 months, another 5% or £300 charge, whichever is greater

“To avoid this, send your Self Assessment tax return as soon as possible. All partners will be charged a penalty if a partnership tax return is late.

“If you pay your tax late you’ll get penalties of 5% of the tax unpaid at:

• 30 days
• 6 months
• 12 months

“You’ll also be charged interest on the amount owed. To avoid this, pay your Self Assessment tax bill as soon as possible.”

HMRC says penalties must be paid within 30 days of the date on the penalty notice and you’ll be charged interest if you pay after the deadline.

If the payment deadline falls on a weekend or Bank Holiday, make sure your payment reaches HMRC on the last working day before it, unless you’re paying by faster payments.

You can pay your penalty through your online bank account, by bank transfer, direct debit, at your bank or building society, or via a cheque through the post.

Speaking after the submission deadline in January, Myrtle Lloyd, HMRC’s Chief Customer Officer, said: “Thank you to the millions of people and agents who filed their Self Assessment tax return and paid any tax owed by 31 January.

“Anyone who missed the deadline should file their return as soon as possible, as penalties and late payment interest may be charged.

“HMRC digital channels are always the quickest and easiest way for people to sort their tax affairs. Search ‘Self Assessment’ on GOV.UK to find out more.”