Self Assessment penalties: Everything you need to know
Type of behaviour | Unprompted disclosure (Cost as % of PLR) | Prompted disclosure (Cost as % of PLR) |
|---|---|---|
Non-deliberate | 0-30% (within 12 months) 10-30% (12+ months) | 10-30% (within 12 months) 20-30% (12+months) |
Error due to negligence | 0-30% in the first 12 months (10-30% after that) | 0-30% in the first 12 months (20-30% after that) |
Deliberate error | 20-70% | 35-70% |
Concealed deliberate error | 30-100% | 50-100% |
Date | Penalty |
|---|---|
On the penalty date | Initial fine of £100 |
3 months late | Charges of £10 per day, up to a maximum of £900 |
6 months late | Further penalty of £300 or 5% of the tax due (whichever is greater) |
12 months late | Another £300 or 5% of the tax due (whichever is greater) |
Date | Penalty |
|---|---|
30 days late | 5% of the tax due |
6 months late | Additional fine of 5% of the tax due |
12 months late | Additional fine of 5% of the tax due |
Type of behaviour | Unprompted disclosure | Prompted disclosure (Cost as % of PLR) |
|---|---|---|
Genuine error | No penalty | No penalty |
Error due to negligence | 0-30% | 15-30% |
Deliberate error | 20-70% | 35-70% |
Concealed deliberate error | 30-100% | 50-100% |
Date | Penalty |
|---|---|
Less than 15 days late | No penalty |
Over 15 days late | 2% of tax outstanding |
Over 30 days late | 2% of the tax outstanding after day 15, plus 2% of the tax outstanding at day 30. After this date, the penalty will accrue at 4% per annum |
Submission frequency | Penalty threshold |
|---|---|
Annual | 2 points |
Quarterly (including MTD for ITSA) | 4 points |
Monthly | 5 points |