Calculator
Tax Year Comparison Calculator
See how threshold and rate changes affect your Income Tax, National Insurance, student loan and take home pay.
- Runs in your browser
- Uses official rate sources
- No account needed
Methodology
The same salary input is calculated for two selected tax years using each year's separate configuration.
Example Calculation
Compare GBP 50,000 in 2025/26 and 2026/27 to see the annual and monthly net pay difference.
Estimate Disclaimer
Results are estimates for general information and are not financial, tax, employment or mortgage advice.
FAQ
Frequently Asked Questions
Which tax years are supported?
The calculator supports 2022/23 through 2026/27 in this version.
Why do National Insurance years differ?
Some historical years had rate or threshold changes during the tax year, so results are annual estimates.