§ Contractor calculator · £600/day
£600/day contractor
take-home calculator.
At £600/day (5 days × 46 weeks = annual gross £138,000), here's what each contracting structure actually pays in the 2026/27 tax year.
§ Quick answer
At £600/day, the most tax-efficient structure is permanent salary at £84,298 net annual — an effective tax rate of 38.91%.
- Outside IR35 (Ltd)
- £83,155/yr
- Inside IR35 (Umbrella)
- £75,650/yr
- Permanent salary
- £84,298/yr
Senior+ rate. Locum doctors, principal engineers, financial-services consultants.
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