The September 2026 Supply Staff Procurement Mandate: What School Leaders Need to Know

If you've seen the phrase "supply staff procurement mandate" doing the rounds in trust board papers or sector briefings this summer, you're not imagining a sudden change in tone. From 1 September 2026, single and multi-academy trusts are expected to procure their supply staff through the government's new Supply Teachers and Education Recruitment framework — known as RM6376 — unless they can demonstrate an alternative arrangement costs no more. It's one of the more concrete changes in the 2026 Academy Trust Handbook, and it lands at exactly the moment most trusts are locking in September cover.

For school leaders, the practical question isn't whether the policy is a good idea in principle. It's simpler: what do you actually need to check, sign off, or change before the first week of term? This post walks through what the mandate covers, why it exists, and what "compliant" looks like in practice.

What is the supply staff procurement mandate?

The mandate is a new requirement in the Academy Trust Handbook stating that academy trusts should source supply teachers and support staff through the Government Commercial Agency's RM6376 framework, which went live in May 2026 and runs until April 2029. Local authority maintained schools can also use it, though independent schools currently cannot.

Trusts aren't strictly barred from using other partners. But if you use an alternative route, the guidance from the Department for Education is clear that your costs — aggregated across the trust — must not exceed the capped rates available under the framework. In effect, the framework has become the default, and anything else needs to be justified and documented.

Why the government introduced it

The rationale is financial. Government figures show schools in England spent around £1.4 billion on agency supply staff in 2023/24, with a meaningful share of that going toward mark-up rather than the pay of the person actually standing in the classroom. RM6376 caps what suppliers can charge on top of staff pay, rather than capping supply staff pay itself.

School leader groups have broadly welcomed the intent, if not treated it as the whole answer. ASCL's general secretary has described the fees historically charged by some suppliers as "a big drain on school finances," while pointing out that leaders are often "powerless" to resist paying them because classroom cover can't wait. ASCL has also argued the deeper fix is reducing reliance on supply staff altogether, through better recruitment and retention — something a fee cap alone won't solve.

What this means for your trust in practice

For most trusts, there are two live routes from September:

Neither route removes the underlying operational challenge: finding the right person, with the right subject knowledge or key stage experience, available on the day you need them. A framework can cap what you pay for cover. It can't guarantee that cover shows up ready to teach your curriculum well.

How to prepare before the September deadline

A few practical checks are worth doing now, while there's still time to adjust before the autumn term absence rush begins:

• Ask your current supply and staffing partners directly whether their rates sit within the RM6376 caps for each role type you use.
• If you use more than one staffing partner or platform, check whether your finance team is aggregating spend at trust level, as the guidance requires — not just school by school.
• Get sign-off from your board or trustees on which route (framework or alternative) your trust is taking, and keep a short paper trail explaining the decision.
• Flag the change to your school business managers now, so it doesn't become a September fire drill when the first absence of the term lands.

None of this needs to be complicated, but it does need a decision and a record of that decision, ready if it's ever asked for.

Getting ahead of the September deadline

The supply staff procurement mandate isn't asking trusts to change how they teach or who they employ — it's asking them to be able to show their supply spend is fair value. For most leaders, that's a paperwork and pricing check rather than an operational overhaul. The trusts that will find September smoothest are the ones checking their rates and routes now, rather than in the first week back.