Finance

Convert a UK gross salary to monthly take-home pay after Income Tax, National Insurance and an optional student-loan plan, at 2026/27 rates.

Work out the monthly repayment, total cost and amortisation schedule of a UK fixed-rate mortgage or loan, from the amount borrowed, term and rate.

Project how a deposit plus monthly contributions grow at a chosen annual return, with a year-by-year compound interest chart.

Convert a net amount to VAT-inclusive gross or back again, at the UK's 20% standard, 5% reduced or 0% zero rate.

Work out what a cash ISA, stocks and shares ISA or savings pot could be worth: starting amount, monthly payments, annual rate and compounding frequency.

Work out the nest egg you need for financial independence using the 25x rule (a 4% withdrawal rate) and how many years it takes at your savings rate.

Work out your UK new State Pension from your National Insurance qualifying years and date of birth, with 2026/27 rates and your State Pension age.

Work out the units and turnover your UK business needs to break even, from fixed costs, your VAT-exclusive price and the variable cost per unit.

Compare salary and dividends for a UK limited company director: take-home pay and company cost on 2026/27 Income Tax, National Insurance and Corporation Tax.

Estimate UK Inheritance Tax: nil-rate band, residence nil-rate band for a home left to children, spouse exemption and gifts in the 7 years before death.

Estimate weekly child maintenance with the Child Maintenance Service formula: income, number of children, other children, shared care nights and fees.

Cost of filling gaps in your National Insurance record with Class 3 or Class 2, the years still open, and what each year adds to your State Pension.

Work out Income Tax and Class 4 National Insurance on sole trader profits, with Scottish rates, the Personal Allowance taper and your take-home.