Free UK mortgage, tax & money calculators

Estimate monthly mortgage repayments from loan amount, rate and term.

Calculate SDLT, LBTT and LTT for England, NI, Scotland and Wales.

Rough UK IHT estimate from estate value, nil-rate band, residence band and spouse gifts.

Estimate 2026/27 CGT from a disposal, the £3,000 allowance and 18%/24% rates.

Estimate Council Tax band from 1991/2003 values and bill from Band D.

Estimate income tax, National Insurance and take-home pay (UK).

Estimate employee, employer and self-employed National Insurance from earnings.

Compare take-home pay with pension salary sacrifice vs no sacrifice.

Estimate statutory redundancy pay from age, service and weekly pay (2026 caps).

Add or remove UK VAT at 20%, 5% or 0% — net, VAT and gross.

Estimate UK vehicle tax from first registration date, CO₂, fuel type and list price.

Project savings growth with compound interest and monthly contributions.

Estimate Plan 1, 2, 4, 5 and postgraduate loan deductions from income.

See how long to clear a card balance and total interest at a fixed payment.

See how inflation erodes cash and what a return is worth in today’s money.

Estimate monthly payments for personal loans and car finance, plus months and interest saved if you overpay.

Work out percentages, increases, decreases and “what percent of”.

Convert length, weight, temperature and volume units instantly.

Change text case and count words, characters and sentences.

Estimate petrol or diesel cost from miles, MPG or L/100km and price per litre.

Count working days between two dates with England & Wales bank holidays.

Calculate Body Mass Index from height and weight (metric or imperial).

Beautify, minify and validate JSON in your browser.

Encode text to Base64 or decode Base64 back to text.

Test JavaScript regular expressions against sample text live.