Supply Teacher Pay Explained: What You Actually Take Home in 2026

If you've ever looked at a school's advertised day rate and then wondered why your payslip shows something quite different, you're not alone. Understanding supply teacher pay means understanding a chain of deductions and middlemen that most job adverts never explain. With schools across England spending an estimated £1.4 billion a year on agency supply staff, a lot of that money changes hands before it reaches you — and this year, new government rules are changing how much of it agencies can keep.

With September approaching and many educators lining up placements now, it's worth knowing exactly how that pay chain is built up, so you can compare offers properly and spot a fair deal when you see one.

How supply teacher pay actually works

When a school books supply cover through an agency, it typically pays a single "day charge" that bundles together three things: your pay, employment costs such as National Insurance and pension contributions, and the agency's fee for sourcing, vetting and placing you. The DfE's own worked example shows a school paying £308 a day, made up of £200 candidate pay, £37 in employment costs, and a £71 agency mark-up.

That mark-up varies enormously between agencies. The National Education Union has reported that agency markups often exceed 90%, with some supply teachers receiving as little as £110 a day while the school pays over £200 for the same booking. The gap between what a school pays and what you receive isn't fixed — it depends entirely on which agency you're registered with and how they price their service.

PAYE or umbrella company? Why it changes your take-home pay

Most supply teachers are paid in one of two ways: directly through an agency's PAYE payroll, or through an umbrella company that employs you on the agency's behalf. Under PAYE, the agency deducts tax and National Insurance and pays you as an employee — the deductions are usually straightforward to follow on your payslip.

Under an umbrella arrangement, the umbrella company invoices the agency for your work, deducts its own margin plus employer National Insurance, and then processes your pay through PAYE on top of that. Both routes are legal and common, but they aren't identical, and it's worth asking any agency you register with exactly which model they use and for a sample payslip breakdown before you accept a booking.

Why some supply teachers earn less than the national pay scale

Permanent teachers are paid according to the national teachers' pay scale, with progression tied to experience and qualifications. Supply teachers don't automatically benefit from the same protection — pay is often negotiated per placement, per agency, or per school, which is part of why the NEU has called for supply staff to be paid according to national scales as standard.

This is one of the more frustrating realities of the current system: two teachers with the same experience, working in similar schools, can end up on different day rates purely because of which agency matched them to the role, or because one of them negotiated their rate up front and the other didn't.

What the DfE's new fee-cap framework does — and doesn't — change

In May 2026, the Department for Education launched the new Supply Teachers and Education Recruitment (STeER) framework, capping the daily supplier fee agencies can charge schools at up to £45 for STEM teachers and £40 for non-STEM teachers, among other role categories. From September 2026, the Academy Trust Handbook will require trusts to use this framework unless they have an alternative compliant arrangement.

It's an important shift, but it's worth being clear about what it actually targets: the cap applies to the fee agencies charge schools, not to the rate agencies pay you. As the DfE itself has stated, agency staff pay and conditions are unaffected by the cap. In practice, this means the framework should curb the most extreme mark-ups over time, but it doesn't guarantee your day rate will rise — so it's still worth comparing offers and asking direct questions about your own pay.

How to check you're getting a fair rate this September

A few habits can help you enter the new school year with more clarity over your supply teacher pay:

• Ask each agency you register with for their day rate range for your subject, phase and experience level, and get it in writing.
• Request a sample payslip or a plain breakdown of deductions before your first booking.
• Compare rates across two or three agencies rather than relying on just one, since rates for the same placement can genuinely differ.
• Keep a simple record of what you're paid for each booking, so you can spot inconsistencies early rather than months later.