Contractor Salary Calculator

Calculate gross annual contractor income from your day rate and billable days.

Gross annual contractor income

£110,000.00

Monthly equivalent
£9,166.67

Gross income estimate before tax, expenses, pension, gaps between contracts or IR35 effects.

v1.0 · Reviewed September 2026

How this is worked out

Gross annual income is day rate × billable days, with the monthly figure dividing by 12.

Worked example

  • Day rate £500
  • 220 billable days

500 × 220

£110,000.00 a year

Assumptions and limits

  • Gross income before tax, National Insurance, expenses, pension and accountancy costs.
  • Assumes every day entered is billed and paid, with no gaps between contracts.
  • Whether the engagement falls inside or outside IR35 materially changes what you keep, and is not modelled.

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