£1,000 of side income costs you nothing in tax, at any salary — it sits inside the £1,000 trading allowance, and below that threshold there is nothing to report either. There is one page for this amount rather than one per salary, because the answer does not change with your salary.
| Salary | Tax + NI | You keep | Effective rate |
|---|---|---|---|
| £15,000 | £0 | £1,000 | 0% |
| £20,000 | £0 | £1,000 | 0% |
| £25,000 | £0 | £1,000 | 0% |
| £30,000 | £0 | £1,000 | 0% |
| £35,000 | £0 | £1,000 | 0% |
| £40,000 | £0 | £1,000 | 0% |
| £45,000 | £0 | £1,000 | 0% |
| £50,000 | £0 | £1,000 | 0% |
| £60,000 | £0 | £1,000 | 0% |
| £80,000 | £0 | £1,000 | 0% |
| £100,000 | £0 | £1,000 | 0% |
Rules checked 18 August 2026 against GOV.UK pages showing the 2026/27 tax year. This is information, not tax advice; your Self Assessment is the authority on what you actually owe.