Important note
This calculator is simplified. It does not replace advice from an accountant and may not cover Scotland/Wales rates, student loans, benefits, losses, residence, unusual income, company extraction, penalties or every allowance.
Official guidance referenced
Use these links to check current rules before relying on a calculator result.
Related guides
FAQs
Is this calculator a final tax answer
No. It is a simplified planning tool. Check official guidance and speak to an accountant before acting.
When should I speak to an accountant
Speak to an accountant if the result affects a tax return, VAT registration, MTD setup, business structure, penalties or cash-flow planning.
What should I prepare before asking for help
Prepare income totals, expenses, tax year dates, platform statements, software records and any HMRC letters.