Back-of-the-napkin,
front-of-your-mind

Quick UK financial calculators you can trust. Everything runs locally in your browser — your numbers never leave your device.

Property

Mortgage Calculator

Monthly payments, overpayments, and fixed-rate deal comparison.

Stamp Duty (SDLT)

SDLT for standard, first-time buyer, and additional properties.

Full Salary Calculator

Tax, NI, pension, student loans, Scottish rates, and more.

Take Home Pay

Quick UK take-home pay estimate.

Bonus Tax

Tax on a bonus, with pension sacrifice comparison.

Job Comparison

Compare up to 3 offers including pension, bonus, and commute.

Meeting Cost

See the real cost of meetings in real-time.