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Interim FM Day Rates and IR35: A UK Guide for 2026

By
Peter Forshaw
Managing Director
Last reviewed
04 Nov 2026
Interim FM Day Rates and IR35: A UK Guide for 2026
In brief

Interim day rates reflect scope, urgency and risk, not salary divided by 260. IR35 status depends on the facts of each engagement, and the client decides it for medium and large organisations. Check the true cost, the contract and the compliance changes before you engage.

Interim FM Day Rates and IR35: A UK Guide for 2026 cover

How interim FM day rates are set, what an interim really costs and how IR35 and the 2026 compliance changes affect employers and interims.

What the guide covers

  • What an interim is, and what a contractor or temp is not
  • How day rates are set and what an interim really costs
  • IR35 in plain English and what decides inside or outside
  • Compliance changes beyond IR35
  • A contracting checklist for employers
  • Pricing and protecting yourself as an interim
  • Interim-to-permanent, three worked scenarios and common questions

Related reading

Who this resource is for

FM, estates and workplace leaders who are covering a vacancy, and interim managers who want to price and contract with confidence. It is general information, not tax or legal advice.

Talk to Maxwell Stephens

If you want to talk this through, contact Maxwell Stephens or call 0207 118 4848.