Tax Calculator Ireland & UK — Free Online
Free tax calculator for Ireland and the UK: estimate income tax, USC, PRSI, and National Insurance for sole traders and limited companies. Band-by-band calculations with 2026 Irish and 2026/27 UK rates — free, instant, and not financial advice.
From estimate to draft return — ready for review
This calculator gives you a quick planning number. The Tax Agent connects to your books, keeps a draft Form 11 or SA100 ready, and flags savings you might miss — so you spend less time chasing routine admin. Our Chartered Accountant team provides insight on AI drafts; a qualified professional still signs off filings.
- Draft returns built from reconciled transactions, not manual spreadsheets
- Expense and deduction suggestions before you review with your adviser
- Deadline tracking so you are not waiting on consultant callbacks for routine questions
Tax estimates and draft return packs for Form 11, SA100, and corporation tax — prepared for you or your qualified adviser to review and file. Start a trial and see draft returns update as transactions sync — no chasing, no surprise consultation bills.
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Tax calculator questions
Answers for Irish Revenue and UK HMRC rules — income tax bands, USC, PRSI, National Insurance, and sole trader vs limited company estimates.
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Rates reflect 2026 Irish and 2026/27 UK rules. This is general guidance — confirm your position with Revenue or HMRC before filing.
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Organise transactions and receipts, flag what is missing, and prepare VAT and bookkeeping packs for Ireland and the UK — with you in control before anything is shared or filed.
Tax calculator Ireland — how to estimate your liability
A tax calculator for Ireland helps sole traders and limited company directors estimate income tax, USC, and PRSI before filing Form 11. Enter your annual profit, select your business structure, and see band-by-band calculations with current Revenue rates.
This free online tax calculator applies 2026 Irish income tax bands (€44,000 standard rate for single individuals), €4,000 tax credits, USC progressive bands, and Class S PRSI at 4.2%. No sign-up or download required — results update instantly in your browser.
Irish income tax calculator for sole traders
Sole traders in Ireland pay income tax on profits after allowable expenses, plus USC on gross income above €13,000 and PRSI at 4.2% (minimum €650). The calculator shows each component separately so you can plan provisional tax instalments.
For limited companies, switch to the company structure to estimate corporation tax at 12.5% on trading profits, plus personal tax on director salary and dividends. Compare sole trader vs limited company take-home in one view.
UK tax calculator — self-assessment and limited companies
Select United Kingdom to estimate self-assessment income tax after the £12,570 personal allowance, plus Class 4 National Insurance at 6% and 2% bands. Limited company estimates include corporation tax at 19%/25% with marginal relief.
Irish and UK rules differ on bands, credits, and filing deadlines. Always confirm your position with Revenue or HMRC before filing — this calculator is for planning, not filing. Mandated sole traders and landlords should also track Making Tax Digital for Income Tax quarterly updates separately from this estimate tool.
Student loans inside MTD quarterly updates
If you repay a Plan 1–5 student loan or a postgraduate loan, MTD-compatible software may show estimated loan repayments after each quarterly update. HMRC confirms those in-year estimates are not payable — the annual charge is calculated on the tax return and due by 31 January following the tax year. Use this calculator only for high-level Income Tax and National Insurance planning, not student-loan repayment maths.
UK mileage rates and take-home planning
From 6 April 2026, HMRC Approved Mileage Allowance Payments and self-employed simplified mileage rates rose to 55p for the first 10,000 business miles (25p thereafter). Use this tax calculator for high-level Income Tax and National Insurance estimates after updating expense policies — then read the AMAPs briefing for employer and sole-trader catch-up steps.
Related free calculators and VAT services
Registered or approaching the €85,000 VAT threshold in Ireland or the £90,000 UK threshold? Use our free VAT calculator for Ireland and the UK to work out standard and reduced rates, convert net to gross, and estimate set-aside before you file with Revenue or HMRC. For Ireland-specific return prep beyond the calculator, see VAT Services Ireland.
VAT return services for Ireland
Once you are VAT-registered, bi-monthly returns and transaction reconciliation sit alongside income tax planning. Pair this tax calculator with Irish VAT return prep — drafts, threshold monitoring, and Chartered Accountant insight before you or your adviser file with Revenue. Start from VAT Services Ireland after checking rates on the calculator.