£450 a day take-home pay
A £450/day contract is worth about £99,000 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 | £450 |
| Billable days assumed | 220 |
| Gross annual contract value | £99,000 |
| Take-home — inside IR35 (umbrella) | £60,071 |
| Take-home — outside IR35 (limited) | £66,056 |
| Difference | £5,985 |
At £450/day, Outside IR35 (limited company) leaves you £5,985/year better off.
Adjust the numbers
Change days worked, salary, expenses or umbrella margin to match your situation.
Inside IR35 (umbrella)
£60,071/yr
You keep 61% of the contract value
Assignment rate£99,000
Umbrella margin-£1,150
Employer NI-£12,055
Apprenticeship levy-£427
Income tax (PAYE)-£21,579
Employee NI-£3,718
Take-home pay£60,071
Outside IR35 (limited company)
£66,056/yr
You keep 67% of the contract value
Company revenue£99,000
Director salary-£12,570
Employer NI on salary-£1,136
Corporation tax-£18,853
Dividend tax-£12,955
Income tax + NI on salary-£0
Take-home pay£66,056
Outside IR35 (limited company) leaves you £5,985/year better off at this rate.