Your money,
decoded by AI.
Premium AI-powered UK calculators for take-home pay, mortgages, stamp duty, pensions, ISAs and more — with an intelligent assistant that explains every number in plain English.
Three of the UK's most-used tools.
Real-time UK 2025/26 calculations. Animated results. Plus a one-click AI explanation that turns numbers into insight.
Your inputs
Where your money goes
Everything UK money, in one place.
From your first payslip to your retirement plan — every UK calculator you'll ever need.
Why people are switching to us.
AI that explains
Sterling turns raw numbers into plain-English insight. Tap "Explain" on any result.
Real-time UK calculations
Live updates as you drag sliders. Built for the 2025/26 HMRC tax year.
Private by default
Nothing leaves your browser unless you talk to the AI. No accounts required.
Beautiful visuals
Interactive charts and animated breakdowns make complex finance easy to see.
Made for the UK
England, Scotland & Wales rates. ISA, SDLT/LBTT/LTT, NI, dividends — covered.
Free for everyone
Premium-grade tools for renters, first-time buyers, freelancers and FIRE planners.