UK money calculators
MoneyCalcs UK
Simple calculators for life's important numbers.
Free UK calculators to help you understand tax, maternity pay and everyday money decisions.
- Free to use
- No sign-up needed
- Plain-English explanations
Popular calculators
The tools people reach for most often, for tax returns and maternity planning.
Self-Employed Tax Calculator UK
Estimate income tax and National Insurance on your self-employed profits for either tax year.
Use calculatorUK Maternity Pay Calculator
Estimate Statutory Maternity Pay week by week across your leave.
Use calculatorHow Much Should I Save for Tax?
Set aside the right slice of every invoice so January never catches you out.
Use calculatorMaternity Leave Savings Calculator
Work out how much to save before leave to cover the income drop.
Use calculatorVAT Threshold Calculator
Track rolling 12-month turnover against the VAT registration threshold.
Use calculatorReturn to Work & Childcare Calculator
Compare take-home pay against childcare costs for different working patterns.
Use calculatorSelf-Employed & Tax
Tools for sole traders, freelancers and side-hustlers who file a Self Assessment tax return. Work out what to set aside, what your profit really is, and when HMRC will expect payment.
Self-Employed Tax Calculator UK
Estimate income tax and National Insurance on your self-employed profits for either tax year.
Use calculatorHow Much Should I Save for Tax?
Set aside the right slice of every invoice so January never catches you out.
Use calculatorPayment on Account Calculator
See what may be due in January and July, including the balancing payment.
Use calculatorSole Trader Profit Calculator
Turn turnover and expenses into the profit figure HMRC actually taxes.
Use calculatorVAT Threshold Calculator
Track rolling 12-month turnover against the VAT registration threshold.
Use calculatorMaternity & Family
Plan maternity leave with clear numbers. Understand statutory and enhanced maternity pay, how your household budget changes month by month, and what returning to work looks like.
UK Maternity Pay Calculator
Estimate Statutory Maternity Pay week by week across your leave.
Use calculatorMaternity Leave Planner
Map your leave dates, paid and unpaid weeks and your return-to-work date.
Use calculatorEnhanced Maternity Pay Calculator
Model your employer's occupational scheme against statutory pay.
Use calculatorMaternity Leave Savings Calculator
Work out how much to save before leave to cover the income drop.
Use calculatorReturn to Work & Childcare Calculator
Compare take-home pay against childcare costs for different working patterns.
Use calculatorHow MoneyCalcs UK works
Built for real questions
Each calculator answers a question people actually ask, such as how much to set aside for tax or what maternity leave will pay each month.
Explained, not just answered
Every result comes with a plain-English explanation of how the figure was reached, so you can sense-check it yourself.
Independent and free
No accounts, no products, no sales pitch. MoneyCalcs UK is an independent site and is not affiliated with HMRC or the UK Government.
Coming next
More categories are on the way. Each one is published only once the rules behind it have been checked.
Work & Salary
Take-home pay, redundancy, overtime
Home & Property
Mortgages, stamp duty, rent
Savings & Investing
Interest, ISAs, goals
Pensions
Contributions, projections
Benefits
Entitlement estimates
Student Finance
Repayments by plan