UK PAYE tool
Compare any two UK payslips. Every line, every delta, with a hedged note on what may explain it.
Note: this page also responds to /compare for legacy links.
A: gross £2,500, net £1,950. B: gross £2,800, net £2,140. Net up £190 - aligns with the £300 gross uplift.
Identical net
No material change.
Higher take-home
B is favourable on the figures.
Lower take-home
B costs you more on the figures - worth reviewing.
Old role: £40k offer. Net per month ≈ £2,540.
New role: £45k offer + 2% extra pension. Net per month ≈ £2,640.
Difference £100/mo. Pot grows £900/yr more. Worth reviewing both lines.
Why-Pay-Lower focuses on month-over-month drops. Compare is general - any two payslips from any time.
Yes - enter the projected payslip values for each role.
Not in this version. Manual entry keeps your data on your device.
Annualise both first (e.g. multiply weekly by 52).
Arithmetic is exact. The 'why' commentary is heuristic - worth reviewing with payroll.
Sources
Last verified: 2026-05-03.
Disclaimer: Educational guidance only. Not tax advice.