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The self employed tax calculator.

See your tax, your National Insurance, your take home, and exactly how much to set aside. Then see how much claiming your expenses keeps in your pocket. No account needed.

Your year

Rough figures are fine. Change them and watch it update.

£

Everything you got paid before costs, across the year.

£

Materials, fuel, tools, mileage, phone, the lot. This is what Lekhio captures for you.

Taxable profit£36,000

What it means

Income tax£4,686
National Insurance (Class 4)£1,406
Total to set aside for tax£6,092
Take home after tax£29,908
Set aside about 17p of every £1 of profit
Put roughly 17% of your profit aside and the tax bill never stings. Lekhio tracks this for you in real time.
Claiming your costs saved you about £2,340
That is the tax you did not pay because you claimed your £9,000 of expenses. Miss them, and that is money handed to HMRC for no reason.

An estimate for 2026/27, England, Wales and Northern Ireland. Scotland has different income tax bands. It assumes self employment income only and the standard personal allowance. Not tax advice for your exact situation.

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Pop your email in and we will send this result, then the odd genuinely useful nudge about your tax deadlines and money you could claim back. No spam. Unsubscribe any time.

We look after your details and never sell them. See our Privacy Policy. Lekhio is not HMRC.

The number that matters is the expenses one.

Every pound of business cost you claim comes off your tax. Most people lose hundreds because they forget receipts or do not know what counts. Lekhio captures it all from a text, so the calculator above always works in your favour.

Start free trialWhat can I claim?

This calculator is a free estimate to help you plan, not tax advice for your exact situation. Lekhio is an independent UK company, not HMRC. You stay responsible for your tax, and nothing is ever sent to HMRC without your approval.

← Back to homeCan I claim it?File your own return