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IR35 Calculators & Financial Guides
Understand assignment pay and compare finances after your employment status is determined.
Tax year 2026/27 · Last verified · Methodology · Official sources
Explore IR35 Calculators & Financial Guides
Inside IR35 Calculator
Estimate take-home from an assignment or gross PAYE rate, showing employer NI, levy, umbrella margin, pension and personal deductions.
Outside IR35 Take Home Calculator
Model company expenses, salary, employer NI, Corporation Tax, dividends, pension and retained profit with transparent deductions.
Umbrella Take Home Pay Calculator
See assignment income become gross PAYE after employer costs, then take-home after tax, employee NI and pension.
Inside vs Outside IR35 Take Home
Compare the same revenue through PAYE and company models without confusing finances with status.
Umbrella Assignment Rate vs Gross Pay
Understand why an assignment rate is not salary and read the employment-cost waterfall.