Tool Methodology & Usage Guide
Estimate your HMRC income tax, National Insurance contributions, and student loan deductions for the 2026/27 tax year.
Frequently Asked Questions
The personal allowance remains at £12,570. Taxpayers earning over £100,000 lose £1 of allowance for every £2 earned above £100k.
Employees pay 8% NI on earnings between £12,570 and £50,270, and 2% on earnings above £50,270.