Employment Tax Guide -- Updated June 2026

Supply Teacher Tax Guide UK 2026/27

Supply teaching offers flexibility, but it also brings a distinctive set of tax complications -- multiple employers, emergency tax codes, temporary workplace travel claims, exclusion from the Teachers Pension Scheme, and the challenge of reconciling PAYE across several agencies at the end of the year. This guide covers the full tax picture for supply teachers in 2026/27: employment status and PAYE, income tax and NI rates, travel and expense deductions, the 24-month temporary workplace rule, pension access, and what to check in April after the tax year ends.

How Supply Teaching Works

Supply teaching in the UK operates through three main arrangements, each with different tax implications.

Agency employment (most common)

The majority of supply teachers are employed through a private supply agency. The agency recruits the teacher, maintains a DBS check, handles compliance, and contracts with schools to provide cover. The teacher is employed by the agency -- not by the school -- and the agency operates PAYE, deducting income tax and National Insurance before payment. The school pays the agency; the agency pays the teacher.

Because the supply teacher is the agency's employee, employment rights apply -- including the right to paid holiday (at least 5.6 weeks pro-rated) and auto-enrolment into a workplace pension (usually NEST) if annual earnings from that agency exceed £10,000. However, the teacher is generally excluded from the Teachers Pension Scheme.

Direct local authority employment

Some local authorities employ supply teachers directly on short-term contracts. These teachers are employed by the local authority, may retain access to the Teachers Pension Scheme, and receive the same PAYE treatment as other LA employees.

Self-employed supply teachers

Genuine self-employment for supply teachers is rare. HMRC scrutinises arrangements where teachers market themselves directly to schools, set their own day rates, and work for multiple schools without agency intermediation. Working through an agency almost never qualifies as self-employment regardless of how the contract is labelled, because the agency controls placements and pay rates.

Tax and NI on Supply Teaching Pay

Supply teachers pay income tax and National Insurance under PAYE in the same way as permanent employees. The 2026/27 rates are:

Band	Income range	Income tax rate	Employee NI rate
Personal allowance	Up to £12,570	0%	0%
Basic rate	£12,571 to £50,270	20%	8%
Higher rate	£50,271 to £125,140	40%	2%

The multiple-agency tax code problem

When a supply teacher works for more than one agency simultaneously, each agency is a separate employer. HMRC typically allocates the full personal allowance to the main (highest-earning) employer using code 1257L, and applies either:

0T code: no personal allowance applied -- tax deducted from the first pound at the applicable rate.
BR code: flat 20% deducted on all earnings regardless of the amount.

If your second agency income is low and falls within the basic-rate band, too much tax may be deducted under a 0T code (which applies 40% once the band threshold is reached, even if combined earnings do not reach that level).

The solution is to contact HMRC (0300 200 3300 or through your Personal Tax Account) and request that your personal allowance be split between your employers in proportion to expected earnings. HMRC will issue revised tax codes to each agency.

Travel and Expenses

Temporary workplace travel

Under HMRC rules, a workplace is temporary if the employee is not expected to work there for a continuous period exceeding 24 months, or if the total period at that location is expected to be less than 40% of their working time. Most supply teachers rotate between many schools, each of which qualifies as a temporary workplace.

Travel costs to and from each temporary workplace (each school) are deductible. This includes mileage (at HMRC approved rates: 45p/mile for the first 10,000 miles, 25p above), public transport fares, and parking at the school. The deduction applies from the first day at each new school.

The 24-month rule

If a supply teacher works continuously at the same school for 24 months or more -- or if at the outset it is reasonably expected that the placement will last longer than 24 months -- that school becomes a permanent workplace and travel is no longer deductible. This most commonly affects long-term cover roles where a supply teacher effectively fills a vacancy for an extended period. Review each long placement carefully.

Professional subscriptions

Subscriptions to approved professional bodies are deductible. For teachers, approved organisations include the NEU (formerly NUT), NASUWT, NAHT, and others listed by HMRC. Check the HMRC list of approved professional organisations and learned societies for the current year.

How to claim expenses

Agency supply teachers generally claim expenses via a P87 form (for expenses up to £2,500) or through the Self Assessment tax return if the total claim or other income requires one. Keep receipts, mileage logs, and a record of which schools you visited and on which dates.

Teachers Pension Scheme (TPS)

The Teachers Pension Scheme is a defined benefit occupational pension scheme for teachers in England and Wales employed by schools, academies and local authorities. It offers guaranteed benefits based on career average earnings and is one of the most valuable employment benefits in the sector.

Most supply teachers employed through private agencies cannot access TPS.The scheme rules require the employer to be a participating employer -- schools and LAs are participating employers, but private supply agencies are not. The agency is the employer, so TPS membership is not available.

Auto-enrolment alternatives: Agency supply teachers are still entitled to be auto-enrolled into a qualifying workplace pension if they earn above £10,000 per year from that agency. Most agencies use NEST (the National Employment Savings Trust). Employer contributions are currently at least 3% of qualifying earnings, with a minimum 5% employee contribution. This is a much less generous arrangement than TPS.

Historic TPS benefits: Teachers who built up TPS benefits during permanent employment before moving to supply work retain those accrued benefits. Check your statement at teacherspensions.co.uk to confirm your entitlement.

Supply teachers employed directly by a local authority (not through an agency) may retain TPS access. This is one reason some supply teachers prefer direct LA engagement over private agency work despite the reduced flexibility.

Professional Development and Home Office

CPD and training

Costs of continuing professional development (CPD) courses that are directly related to your current teaching duties can be deducted as a work expense if you fund them yourself. The course must be relevant to your current role -- a course on classroom management, special educational needs, or subject-specific pedagogy qualifies. A course to obtain a new qualification or change career direction does not qualify under the wholly and exclusively for employment test.

Home office

Supply teachers whose primary place of work is at schools generally cannot claim a home office deduction. The office-at-home claim requires that the home is used wholly and exclusively for work and that there is no other place of work for the relevant duties. Since the actual teaching work is performed at school, a home office claim is very difficult to sustain for standard supply teaching duties.

If a supply teacher also provides private tutoring from home, the home tutoring income and associated expenses should be treated separately from the PAYE supply teaching income -- potentially requiring Self Assessment registration if it is self-employed tutoring.

End of Year Tax and P60

At the end of each tax year (5 April), supply teachers should receive a P60 from each active employer showing total pay and tax deducted for that employment. If an engagement ended during the year, the agency issues a P45 rather than a P60.

Checking your total tax position

With multiple agencies and possibly multiple P60s or P45s, supply teachers should:

Log into HMRC's Personal Tax Account (gov.uk/personal-tax-account) in April or May each year.
Check that all employments are shown and that total income and tax deducted match your payslips and P60s.
If total tax paid exceeds the correct amount (for example due to wrong codes), HMRC will issue a P800 showing a refund owed.
If too little tax was deducted, HMRC will issue a Simple Assessment or request a Self Assessment return.

NI overpayment: Because each employer applies NI thresholds independently, supply teachers with multiple agencies may overpay NI across their combined earnings. The overpayment is reconciled through the Self Assessment return and refunded by HMRC. If you do not file Self Assessment, overpaid NI may go unclaimed, so it is worth registering if you have significant multi-employer NI.

Use the take-home pay calculator to estimate your net pay from each agency and check whether the PAYE deductions look correct.

Frequently Asked Questions

How is supply teacher income taxed in the UK?

The vast majority of supply teachers are employed through a supply agency, which operates PAYE (Pay As You Earn). The agency deducts income tax and employee National Insurance contributions from each pay packet before payment. Income tax is charged at 20% on income above the personal allowance (£12,570 in 2026/27) up to £50,270, then 40% above that. If you work through more than one agency, or simultaneously hold other employment, the personal allowance may be split between employers or the second employer may use an emergency tax code. It is important to notify HMRC if your tax code appears wrong.

Can supply teachers access the Teachers Pension Scheme?

Most supply teachers employed through private supply agencies cannot access the Teachers Pension Scheme (TPS). The TPS is generally available only to teachers employed directly by a school, academy or local authority. Agency workers are typically excluded. This is a significant financial disadvantage of working through a supply agency compared with direct employment. Supply teachers who previously worked as permanent teachers will retain any TPS benefits already accrued. If placed directly by a local authority (rather than a private agency), TPS membership may be available. Check your contract and contact the TPS at teacherspensions.co.uk if you have historic entitlements.

What expenses can supply teachers claim?

Supply teachers can claim deductible expenses for costs incurred wholly, exclusively and necessarily in performing their duties. The most significant category is travel to temporary workplaces (individual schools), which is deductible if the school is not your permanent workplace. Professional membership subscriptions such as union fees (NUT/NEU, NASUWT) are deductible. Costs of work-related CPD courses can be claimed if self-funded and directly related to your teaching role. Educational materials purchased for use in class may be claimable. General clothing is not deductible even if worn at school, but specialist protective equipment would be. Expenses are claimed through Self Assessment or via a P87 form.

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Can I claim travel expenses to each school as a supply teacher?

Yes, in most cases. Each school where a supply teacher works is treated as a temporary workplace, and travel costs to a temporary workplace are deductible for tax purposes. The key rule is the 24-month rule: if you work at the same school continuously for 24 months or more, HMRC may reclassify that school as a permanent workplace, making travel no longer deductible. For supply teachers who move between many different schools, all schools remain temporary workplaces and travel to each is deductible. Travel from home to the first school of the day and back from the last school are the most commonly claimed costs.

What happens with my tax code if I work for two agencies?

Working for two supply agencies means having two employments. HMRC generally issues each employer a separate tax code. With two employers, HMRC usually applies the full personal allowance (1257L) to the primary employer and a 0T code (no personal allowance) or BR code (20% flat) to the secondary employer. The 0T code may result in too much tax being deducted if the income from the second agency is within the basic-rate band. You should contact HMRC on 0300 200 3300 or via your Personal Tax Account to request that your personal allowance be split between your two agencies in proportion to your expected earnings from each.

Do supply teachers pay National Insurance?

Yes. Supply teachers employed through agencies pay employee National Insurance contributions at the same rates as any other employee. For 2026/27, the employee NI rate is 8% on earnings between £12,570 and £50,270 per year, and 2% on earnings above £50,270. NI is calculated per employment, so each agency applies the NI thresholds separately. This means supply teachers with multiple agency engagements may overpay NI across their combined earnings if each employer applies the lower earnings limit independently. Overpaid NI across multiple employments can be reclaimed after the end of the tax year via your Self Assessment return.

How do I avoid ending up on an emergency tax code?

Emergency tax codes (such as 1257L W1/M1, or 0T) are applied when an employer does not have enough information to use the correct code. To avoid this, always provide your new agency with your P45 from your previous employer or engagement. If you do not have a P45, complete a starter declaration (formerly a P46) accurately -- declare whether this is your only or main job. If you have already been placed on an emergency code, contact HMRC by phone (0300 200 3300) or through the Personal Tax Account at gov.uk to request that the correct code be issued. HMRC will write to your employer with the updated code.

Can supply teachers be self-employed?

Supply teachers working through agencies are almost always treated as employees for tax purposes, even if they are nominally engaged on a contract basis. HMRC and the courts look at the reality of the working arrangement: if the agency controls the work, fixes the pay rate, and the teacher has limited ability to substitute someone else, the arrangement is employment. Self-employed supply teaching is possible if you genuinely market yourself directly to schools, set your own rates, take on commercial risk, and have multiple unrelated clients. But working through a supply agency almost never meets the self-employment tests. Misclassifying agency employment as self-employment risks back-tax, NI and penalties.

What is the 24-month rule for supply teachers?

The 24-month rule is an HMRC rule about temporary workplaces. Travel to a temporary workplace is tax-deductible. However, if a supply teacher works at the same school for a continuous period that the teacher could reasonably expect to last more than 24 months -- or if they actually stay for more than 24 months -- HMRC deems that school to have become a permanent workplace. From that point, travel to that school is no longer deductible. For most supply teachers who rotate between many schools, this rule is not triggered. It is most relevant to long-term supply placements or cover supervisors who effectively become embedded in one school for extended periods.

How does holiday pay work for supply teachers and is it taxable?

Supply teachers employed through agencies are entitled to paid holiday under the Working Time Regulations 1998 -- a minimum of 5.6 weeks per year pro-rated to hours worked. Agencies can pay holiday pay in two ways: rolled-up (added to each weekly or daily rate as a percentage) or paid separately when holiday is taken. HMRC expects holiday pay to be clearly identified on payslips. Holiday pay is taxable income and subject to PAYE income tax and National Insurance in the same way as regular pay. If your agency is paying rolled-up holiday pay, ensure it is itemised on your payslip and accounted for in any expenses or benefit claims.

Related Calculators

Take-Home Pay Calculator

Net pay after tax and NI

Income Tax Calculator

Income tax on total earnings

About the author

Emma Clarke

UK Tax Writer

Emma Clarke has been writing about UK personal tax since 2018, with a particular focus on Self Assessment, PAYE coding and the practical mechanics of how HMRC actually applies the rules to ordinary salaries. Her work concentrates on translating the dense language of HMRC manuals and Finance Act schedules into worked examples that show, pound by pound, how income tax and National Insurance reduce a gross salary to the figure that lands in a UK bank account. Emma covers the full PAYE lifecycle: tax codes (1257L, BR, K codes, emergency codes), the Marriage Allowance, the High Income Child Benefit Charge, salary sacrifice arrangements and their effect on pensionable pay, the Apprenticeship Levy, and the differences between the rUK and Scottish income-tax regimes. She is particularly interested in the edge cases that catch PAYE employees out — the £100,000 personal-allowance taper, the 60% effective marginal rate it creates, and the interaction between student-loan plans and pension contributions. Every figure in Emma's articles is verified against the current HMRC rates pages and worked through a Self Assessment calculation by hand before publication. She writes to CalcHub's editorial standards: primary-source citations, plain English, no promotional language, and clear "this is general information, not financial advice" disclaimers where appropriate.

Personal-finance writer since 2018
UK tax specialism — PAYE, Self Assessment, National Insurance
Writes to CalcHub editorial standards (primary-source citation, annual review)

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Disclaimer: This guide reflects UK income tax, NI and employment rules for 2026/27. Tax codes, PAYE procedures, Teachers Pension Scheme access rules, and expense deductibility can change. This guide is for general information only and is not professional tax or legal advice. Consult a qualified tax adviser or contact HMRC directly for your personal circumstances, and refer to gov.uk for current official guidance.