IR35 CALCULATOR
FOR DEVOPS ENGINEERS.
DevOps and platform engineers are among the most in-demand contractors in the UK tech market. The difference between inside and outside IR35 at £600/day can exceed £20,000 annually. Use this calculator to see your real numbers for 2026/27. All figures use confirmed 2026/27 HMRC rates.
Outside IR35 · Ltd Company
LTD COMPANY
£0
£0/day effective
Contract income£0
Corp tax-£0
Dividend tax-£0
Income tax-£0
Employee NI-£0
Net take-home£0
Effective rate0%
Inside IR35 · Umbrella
UMBRELLA
£0
£0/day effective
Contract income£0
Employer NI (15%)-£0
Income tax-£0
Employee NI-£0
Net take-home£0
Effective rate0%
Need a contractor accountant?
Specialist devops engineer accountants typically save far more than they cost. Compare options and get IR35 insurance.
2026/27 rates. Personal allowance £12,570. Basic rate 20% to £50,270, higher rate 40% to £125,140. Employee NI 8%/2%. Employer NI 15% above £5,000. Corp tax 19%/25% with marginal relief. Dividend allowance £500, dividend rates 8.75%/33.75%/39.35%. Estimates only — not tax advice. Consult a qualified contractor accountant.