Estimate your income tax, personal allowance, and take-home pay for the 2025/26 tax year. Designed for sole traders, freelancers, and self-employed individuals in England, Wales, and Northern Ireland.
| Item | Amount |
|---|---|
| Gross Self-Employment Income | £0 |
| Allowable Business Expenses | £0 |
| Net Profit (after expenses) | £0 |
| Personal Allowance | £0 |
| Taxable Income (after Personal Allowance) | £0 |
| Dividend Income | £0 |
| Income Tax Due | £0 |
| Effective Tax Rate | 0% |
This calculator estimates your income tax only for the 2025/26 tax year. Your actual Self Assessment bill may also include Class 2 and Class 4 National Insurance contributions, which are not included in this estimate.
The Personal Allowance of £12,570 is gradually reduced by £1 for every £2 of income above £100,000, creating an effective 60% marginal rate in the £100,000–£125,140 band.
Answers to common questions about UK Self Assessment and income tax
Self Assessment is the system HMRC uses to collect income tax from individuals who do not have enough tax automatically deducted from their income. Unlike employees who pay tax through PAYE (Pay As You Earn), sole traders, freelancers, and company directors are responsible for reporting their own income and calculating their own tax each year. You must file a Self Assessment tax return if you earned more than £1,000 from self-employment in a tax year, or if you have other untaxed income such as rental income, investment returns, or tips. The tax year runs from 6 April to 5 April, and your return is due by the following 31 January.
The 2025/26 tax year maintains the same income tax bands as the previous year for England, Wales, and Northern Ireland. The personal allowance remains frozen at £12,570, meaning the first £12,570 of your taxable income is tax-free. The basic rate of 20% applies to the next £37,700 of taxable income (up to £50,270 total). The higher rate of 40% applies to taxable income between £50,271 and £125,140, and the additional rate of 45% applies to income over £125,140. The personal allowance taper for those earning over £100,000 remains in place, effectively creating a 60% marginal rate in the £100,000 to £125,140 band.
The Personal Allowance is the amount of income you can earn each year without paying tax. For 2025/26, the standard Personal Allowance is £12,570. If your income is above £100,000, your Personal Allowance is reduced by £1 for every £2 of income above the threshold. This means that once your income reaches £125,140, your Personal Allowance is completely eliminated. You can reduce your adjusted net income (and potentially restore some or all of your Personal Allowance) by making pension contributions or charitable donations through Gift Aid. This makes pension contributions particularly valuable for those earning between £100,000 and £125,140.