IR35 CALCULATOR
FOR PROJECT MANAGERS.
Contract project managers frequently encounter IR35 determinations from medium and large clients. The small company threshold changes from April 2025 may also affect your upcoming engagements — use this calculator to model your take-home. 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 project manager 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.