A tax helper that actually knows UK payslips.
Surplus reconciles every payslip and answers the tax questions you’d normally Google - grounded in your real numbers, built on genuine accountant knowledge.
Surplus reads your payslip and checks the maths - income tax, National Insurance, pension and student loan - then answers your tax questions in plain English. Built by a chartered accountant, it gives you grounded answers from your real numbers, not generic chatbot guesses.
Paid less than expected? You’ll know first.
Surplus reconciles every payslip against your assumptions - flags shortfalls, tracks pay changes and tells you exactly how much income to expect this month.
Ask the things you’d normally Google
- “Why was I taxed more this month?”
- “What does a salary-sacrifice pension do to my take-home?”
- “Is my tax code right?”
- “How much of my pay rise will I actually keep?”
Surplus answers from a real UK-tax engine - PAYE, National Insurance, student loan and salary sacrifice - not a generic model guessing at the rules.
Surplus helps you understand your own pay and tax - it isn’t regulated tax or financial advice.