UK Annual Tax & National Insurance Calculator
A quick, clear estimate of your annual income tax and National Insurance from your taxable income — a solid starting point for any financial planning.
Free to use · No sign-up · Runs in your browser
Your annual tax at a glance
Before you can plan, you need to know your tax position. The Basic Annual Tax calculator estimates your income tax and National Insurance for the year from a single taxable-income figure.
It's the simplest way to sanity-check your tax and a natural first step before using the Optimiser or Retirement Planner.
Income tax estimate
Annual PAYE income tax from your taxable income.
National Insurance
NI estimated alongside income tax.
Multiple tax years
Check across UK tax years.
Simple and fast
One figure in, a clear estimate out.
How it works
- Enter taxable incomeYour annual taxable income figure.
- Choose the tax yearPick the UK tax year to calculate for.
- See your estimateGet income tax and National Insurance for the year.
Frequently asked questions
What counts as taxable income here?
Enter your annual taxable income and the calculator estimates the income tax and National Insurance due for the year.
Which tax years are supported?
You can calculate across UK tax years supported in the app, up to the current year.
Is it free?
Yes — every ODOpt tool is free to use with no sign-up. You can go ad-free with an optional subscription.
Related tools
Estimate your annual tax
Free to use, no sign-up. Go ad-free any time.
Open the calculator — free