Self Assessment Tax Calculator
Estimate UK Self Assessment tax from employment income, self-employment profit, dividends and payments already made.
United Kingdom Calculator
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Move the sliders or type exact numbers. Results update instantly.
Instant Estimate
Your Results
Estimated Balance Due
£6,713
Based on your selected self assessment calculator assumptions. Try different sliders to compare scenarios.
Income Tax
£11,432
Class 4 National Insurance
£745
Dividend Tax
£536
These are planning estimates, not tax, legal or investment advice. Country rules, lender policies and tax rates can change.
Formula & Assumptions
Balance Due = Income Tax + Class 4 NI + Dividend Tax - Tax Already PaidThis calculator gives a fast estimate using common planning assumptions for United Kingdom. Review official rules or speak with a qualified local professional before making high-value financial decisions.
Frequently Asked Questions
No. It is a planning estimate and does not submit anything to HMRC.
No. It estimates a simple balance due before any payments on account calculation.
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