Free salary comparison calculator
Compare salary jumps the right way
Comparison pages are where headline salary turns into a real decision. Use this free calculator hub to see whether the next salary band is actually worth it after tax and deductions.
Trust and interpretation
Comparison pages use 2026/27-style UK salary assumptions. They are designed to show retained value after deductions, not just the gross gap.
Trust note
Use the result as a clear estimate, then verify anything important.
TaxDecod is designed to make salary, payslip and deduction questions easier to understand. It should help you prepare better questions for your employer, payroll team, HMRC or a qualified adviser when the result affects a real decision.
2026/27 reference year
Built around the tax-year assumptions used across TaxDecod, with HMRC/GOV.UK reference points used for the calculator framing.
Estimate, not advice
Results are planning estimates, not payroll software, an HMRC decision, legal advice, tax advice or financial advice.
Inputs matter
Pension settings, region, student-loan plan, tax code and benefits can change the real payslip result, so use your own details where possible.
Commercial separation
Advertising or affiliate relationships must not change calculator logic, tax-year assumptions, explanations or result wording.
Start with the strongest comparison routes
These are the highest-value salary jumps and the clearest decision pages.
Featured comparison routes
£30,000 vs £40,000
Compare the real retained difference after tax and deductions.
£40,000 vs £50,000
Compare the real retained difference after tax and deductions.
£50,000 vs £60,000
Compare the real retained difference after tax and deductions.
£60,000 vs £70,000
Compare the real retained difference after tax and deductions.
Expanded comparison matrix
These routes help cover the broader salary-decision layer without turning comparison pages into low-value noise.
Browse salary pages
Move from comparison into one-salary breakdown routes.
Reverse plan salary
Work backwards from the monthly amount you actually want to keep.
Read the raise guide
Move into the editorial layer behind comparison decisions.