Calculators

Free calculators built around UK statutory rules, with every figure cited to source.

Hours and pay

Tax and pensions

  • Take-home pay calculator

    Your take-home pay is what is left after income tax, National Insurance, and any pension or student loan deductions.

    Uses UK statutory rules

  • Pay rise calculator

    What a pay rise is actually worth once tax and National Insurance have taken their share.

    Uses UK statutory rules

  • Cost of employing someone

    What an employee costs beyond their salary — employer National Insurance and the minimum pension contribution, using the current rates.

    Uses UK statutory rules

  • Workplace pension calculator

    What goes into your workplace pension from you, your employer and tax relief — and what it actually costs your take-home pay.

    Uses UK statutory rules

  • Mileage claim calculator

    What you can claim tax free for using your own car, motorcycle or bicycle for work.

    Uses UK statutory rules

Time off

  • Holiday entitlement calculator

    Almost every worker in the UK is entitled to 5.6 weeks of paid holiday a year, capped at 28 days.

    Uses UK statutory rules

  • Working days calculator

    Count the working days between two dates, with weekends and bank holidays removed.

    Uses UK statutory rules

  • Statutory sick pay calculator

    Statutory sick pay changed fundamentally on 6 April 2026.

    Uses UK statutory rules

  • Term-time holiday calculator

    Holiday entitlement for term-time and part-year staff, where the answer depends on when your leave year started.

    Uses UK statutory rules

Family leave

  • Maternity pay calculator

    Statutory maternity pay runs for 39 weeks.

    Uses UK statutory rules

  • Paternity pay calculator

    Statutory paternity pay is the lower of the standard weekly rate or 90% of your average weekly earnings, for up to two weeks.

    Uses UK statutory rules

  • Maternity leave dates calculator

    Every date that follows from a due date: when to tell your employer, when leave can start, when pay stops and when leave ends.

    Uses UK statutory rules

Leaving a job

  • Redundancy pay calculator

    Statutory redundancy pay is worked out from three things: how long you have worked there, how old you were during each of those years, and your weekly pay.

    Uses UK statutory rules

  • Notice period calculator

    Notice is asymmetric, and most people do not realise by how much.

    Uses UK statutory rules

  • PENP calculator

    How much of a termination payment is taxed as earnings because notice was not worked.

    Uses UK statutory rules

  • Holiday pay when you leave

    What you are owed for holiday you accrued but did not take before your last day.

    Uses UK statutory rules

  • Unfair dismissal basic award

    The basic award for unfair dismissal, worked out from your age, service and weekly pay.

    Uses UK statutory rules