Day Rate Calculator
Calculate your net income from your day rate after tax, NI, and business costs
How We Calculate This
This calculator takes your day rate and multiplies by billable working days (total days minus holidays and sick days). It then applies current HMRC income tax bands (20%/40%/45%), National Insurance contributions (Class 2 flat rate plus Class 4 percentage), deducts pension contributions and business costs (insurance, accountant) to give your true net income and effective hourly rate.
Frequently Asked Questions
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Last updated: March 2026
All calculations are estimates. Verify with your supplier.