Contractor & Freelancer Calculators
Tools built for contractors, limited company directors, and the self-employed — IR35 status, day rates, CIS, and more. Updated for the 2026/27 tax year.
- IR35 Calculator
Inside vs outside IR35 — the real financial difference.
- Day Rate to Salary
Convert a contractor day rate to an equivalent permanent salary.
- Ltd Company vs Sole Trader
Side-by-side tax comparison for the same profit level.
- Umbrella vs PAYE
Compare take-home under an umbrella company versus direct PAYE.
- Allowable Expenses
Check which self-employed expenses you can deduct from your profits.
- CIS Deductions Calculator
Construction Industry Scheme deductions at 20% or 30%.
Looking for income tax, VAT, or National Insurance? Browse all tools →