LifeAdminUKTools

Free UK calculators for salary, tax, benefits and money.

25+ free tools to estimate take-home pay, student loans, Universal Credit, rent, debt, mortgages and everyday UK life admin — updated for 2025/26.

Browse by category

Practical tools organised by the areas of life they help with.

25 free calculators for work, money and everyday UK life admin.

Overtime Calculator UK

Work out overtime pay based on your hourly rate and multiplier.

Open calculator

PAYE Salary Calculator UK

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

Open calculator

Universal Credit Estimator

Very rough Universal Credit estimate using simplified logic.

Open calculator

Maternity Pay Calculator

Estimate statutory maternity pay (SMP) over your leave period.

Open calculator

Rent Affordability Calculator UK

See if your rent fits comfortably within your monthly budget.

Open calculator

Energy Bill Estimator

Add up electricity, gas and standing charges for monthly and annual totals.

Open calculator

Emergency Fund Calculator

Work out your emergency fund target and how much more you need to save.

Open calculator

Credit Card Interest Calculator UK

Estimate how long it takes to clear a card balance and total interest.

Open calculator

Why use LifeAdminUK?

Free to use

All tools are completely free with no sign-up required.

Mobile friendly

Designed for phones first — use any tool on the go.

UK-focused

Built specifically for UK tax rules, pay and living costs.

Simple explanations

Clear results with plain-English guidance on what they mean.

Fast results

Instant calculations with no page reloads or waiting.

Frequently asked questions

Yes. Every calculator on LifeAdminUK is free to use with no account or subscription required.