Salary Comparison Calculator UK
Compare two salaries side by side — see the difference in take-home pay, tax, National Insurance and pension.
Calculations based on publicly available HMRC tax rates and thresholds
Last updated: 19 June 2026
Use this salary comparison calculator to compare Salary A vs Salary B. See the gross difference, monthly take-home difference, tax difference, NI difference and pension difference between two job offers or pay rises.
⚖️ Compare Two Salaries
side-by-side comparison
How to Fairly Compare Two UK Salaries
Comparing gross salaries alone can be misleading. A £10,000 pay rise doesn't mean £10,000 extra in your pocket — the actual take-home increase depends on which tax bands the extra income falls into.
Why the take-home gap is often smaller
As income rises, a larger proportion is taxed at higher rates: 40% above £50,270, and an effective 60% between £100,000 and £125,140 due to Personal Allowance withdrawal. This means higher salaries see proportionally smaller take-home increases for each additional pound earned.
Don't forget pension and benefits
If comparing two job offers, also consider employer pension contributions, bonus structures and other benefits — these can meaningfully change which offer is better overall, even if the gross salaries are similar.
Salary Comparison — FAQs
To fairly compare two salaries, look beyond the gross figures — compare estimated take-home pay after Income Tax and National Insurance, since tax bands mean a higher gross salary doesn't always translate to a proportionally higher net salary. Use the calculator above to see the full comparison.
As your salary increases, more of the additional income is taxed at higher rates (40% above £50,270, or an effective 60% between £100,000 and £125,140). This means the gap in take-home pay is often proportionally smaller than the gap in gross salary.
Yes, if either role offers different pension contribution rates. Employer pension contributions are a valuable part of total compensation, and different salary sacrifice arrangements can affect your net take-home pay differently even at the same gross salary.
Yes, indirectly. A higher salary in London may not go as far due to higher living costs, while a lower salary in a different region could provide better real purchasing power. This calculator compares tax and NI only, not cost of living.
Only the portion of income above the threshold is taxed at the higher rate — not your whole salary. For example, moving from £45,000 to £55,000 only taxes the £4,730 above the £50,270 threshold at 40%, not the full salary.
This calculator focuses on gross salary, tax, NI and pension differences. For a detailed comparison including student loan repayments, use our dedicated Student Loan Calculator alongside this tool.
Calculations are based on publicly available HMRC tax rates and thresholds and should be used for guidance only. Read our Disclaimer, Privacy Policy and Terms of Use for more information.
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