Money & taxes
Mortgage, auto loan, compound interest, retirement, child cost, sales tax and tip calculators, with the formulas explained.
9 tools
- Mortgage repayment calculator Work out your monthly mortgage repayments, total interest and a yearly repayment schedule.
- Car finance calculator Work out your monthly car finance payment and total cost from the APR.
- Compound interest calculator See how a lump sum or regular monthly saving grows with compound interest.
- Tip calculator Work out a 10% or 12.5% tip, split the bill and round up to the pound.
- Loss recovery calculator How much a share or fund must rise to recover a loss, how long it could take, and what averaging down does.
- Mortgage overpayment calculator See the interest you save and how much sooner you are mortgage-free by overpaying, monthly or as a lump sum.
- VAT calculator Add VAT to a price or remove it from a VAT-inclusive price, at 20%, 5% or 0%.
- Self employed tax calculator (2026/27) Income Tax and Class 4 NI on your sole trader profit, and how much to put aside each month.
- Capital gains tax calculator (2026/27) Tax on a gain from property or shares, the 18%/24% split and your 60-day or January deadline.