£600 a day take-home pay
A £600/day contract is worth about £132,000 a year over 220 billable days. Here is roughly what you keep under each IR35 status for 2025/26 — and you can fine-tune every assumption below.
| Day rate | £600 |
| Billable days assumed | 220 |
| Gross annual contract value | £132,000 |
| Take-home — inside IR35 (umbrella) | £73,854 |
| Take-home — outside IR35 (limited) | £81,717 |
| Difference | £7,862 |
At £600/day, Outside IR35 (limited company) leaves you £7,862/year better off.
Adjust the numbers
Change days worked, salary, expenses or umbrella margin to match your situation.
Inside IR35 (umbrella)
£73,854/yr
You keep 56% of the contract value
Assignment rate£132,000
Umbrella margin-£1,150
Employer NI-£16,341
Apprenticeship levy-£570
Income tax (PAYE)-£35,796
Employee NI-£4,289
Take-home pay£73,854
Outside IR35 (limited company)
£81,717/yr
You keep 62% of the contract value
Company revenue£132,000
Director salary-£12,570
Employer NI on salary-£1,136
Corporation tax-£27,598
Dividend tax-£21,550
Income tax + NI on salary-£0
Take-home pay£81,717
Outside IR35 (limited company) leaves you £7,862/year better off at this rate.