UK Sole Trader & Self-Employed Tax Calculator
Instantly estimate your Income Tax, Class 4 National Insurance, and true take-home pay for the 2026/27 tax year. Avoid unexpected HMRC self-assessment bills.
Your Numbers
Your Take-Home
Automate your 2026/27 tax pot before HMRC calls.
Sole traders who don't separate their tax savings end up scrambling every January. Automate your Class 4 NI and income tax reserves automatically using a dedicated UK business account.
Explore Sole Trader AccountsPartner offer.
Set aside for tax
Nobody withholds tax for you, so this is the money to keep back.
Self Assessment payment dates
- 1st payment on account · due 31 January 2027£10,514
- 2nd payment on account · due 31 July 2027£10,514
- Balancing payment · due 31 January 2028balancing
Payments on account are each half of last year's bill; the balancing payment trues it up.
Online accounting built for UK sole traders — software plus real accountants. Partner offer.
As a limited company instead
Assumes a small director's salary plus dividends after 25% corporation tax. Running a company adds accountancy and filing costs, so treat this as a starting point, not advice.
Estimates only. Based on 2026/27 UK tax rules for single/standard filers. Does not include state, local, or other tax obligations. Consult a qualified accountant.
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Saved scenarios
Keep a few rates side by side — for example “Client A at £600/day”. Stored on this device only.