£350 Day Rate After Tax UK (2026/27) — Inside vs Outside IR35

A £350/day UK contractor rate over 220 billable days generates £77,000 in annual contract revenue. Operating Outside IR35 via a Limited Company yields £54,636/year (£4,553.00/month) compared with £49,321/year (£4,110.05/month) Inside IR35 via an Umbrella company—a difference of £5,315/year.

£350/Day IR35 Metric (220 Days) Inside IR35 (Umbrella) Outside IR35 (Limited Company)
Gross Annual Contract Value £77,000 £77,000
Employer NI (13.8%) & Levy £8,867 £1,045 (on £12,570 salary)
Corporation Tax (19%–25%) £0 (Taxed via PAYE) £12,570
Personal Income / Dividend Tax & NI £17,512 £6,949
Net Annual Take-Home Pay £49,321/yr £54,636/yr
Net Monthly Take-Home Pay £4,110.05/mo £4,553.00/mo

Frequently Asked Questions (2026/27 & 2027/28 UK Rules)

How much is a £350 contractor day rate after tax in the UK?

Over 220 billable days (£77,000 gross revenue), a £350 day rate yields £4,553.00 net per month (£54,636/year) Outside IR35 via a Limited Company, or £4,110.05 net per month (£49,321/year) Inside IR35 via an Umbrella company.

Why is my net pay lower Inside IR35 on £350 a day?

Inside IR35, 13.8% Employer National Insurance (£8,533) and the 0.5% Apprenticeship Levy (£334) are deducted from your assignment rate before PAYE Income Tax and Employee NI are calculated.

Authoritative UK Calculators & 2027/28 Early Access