Supply Teacher Agency Tax Guide 2026/27: PAYE, Expenses and Pensions
Everything UK supply teachers need to know about tax in 2026/27 -- PAYE through agencies, travel expense claims, TPS pension eligibility and record-keeping for multiple employers.
Supply teaching offers flexibility and variety -- but it also creates tax complications that teachers in permanent posts never encounter. Multiple payers, fluctuating income, travel between schools and uncertainty about pension access all combine to make tax planning more important for supply teachers than it might first appear.
This guide covers everything you need to know about tax as a supply teacher in 2026/27, with real figures and practical advice.
How Supply Teachers Are Taxed
Supply teachers are almost always taxed under PAYE (Pay As You Earn), whether through:
- A recruitment agency that employs you directly and pays you weekly or monthly
- An umbrella company that acts as your employer and contracts with multiple agencies
- A local authority supply pool that employs teachers directly
- Occasional direct engagement by a school under a zero-hours or short-term contract
In every case, your employer deducts income tax and National Insurance before you receive your pay. You receive payslips showing these deductions and a P60 at the end of each tax year.
2026/27 Tax Rates for Supply Teachers
| Earnings band | Rate |
|---|---|
| Up to £12,570 (Personal Allowance) | 0% |
| £12,571 to £50,270 | 20% Basic Rate |
| £50,271 and above | 40% Higher Rate |
National Insurance (employee) applies at 8% on earnings between £12,570 and £50,270, then 2% above £50,270.
A Real Example: £140 Per Day, 150 Days
A supply teacher earning £140 per day across 150 working days in the academic year has gross income of £21,000.
| Gross income | £21,000 |
| Less Personal Allowance | £12,570 |
| Taxable income | £8,430 |
| Income tax at 20% | £1,686 |
| NI at 8% on £8,430 | £674 |
| Total deductions | £2,360 |
| Approximate take-home | £18,640 |
That works out to roughly £1,553 per month averaged across the year, though in practice supply teachers receive pay only for days actually worked.
Use the take-home pay calculator to model your own income
IR35: Does It Apply to Supply Teachers?
IR35 is a set of rules targeting workers who operate through their own personal service company (PSC) to avoid income tax and NI. For the vast majority of supply teachers, IR35 is not relevant because they do not work through a PSC -- they are employed directly by an agency or umbrella company.
If you operate through your own limited company providing supply teaching services to schools, IR35 could apply, and most supply teaching arrangements would fall inside IR35 given the level of direction and control exercised by schools over how lessons are delivered. Working through a personal service company as a supply teacher is unusual and rarely tax-efficient.
Claiming Travel Expenses: The 24-Month Rule
Temporary workplace rule: You can claim the cost of travelling to a school that is a temporary workplace. HMRC defines a temporary workplace as somewhere you work for less than 24 months continuously, or where it is not expected at the outset that you will stay longer than 24 months.
What counts as temporary: A school where you cover absent teachers for a few days or weeks is clearly temporary. A school where you work as a long-term supply teacher covering an extended absence could become a permanent workplace if the arrangement continues for 24 consecutive months.
Approved mileage rates for your own car:
- 45p per mile for the first 10,000 miles in the tax year
- 25p per mile beyond 10,000 miles
If your agency reimburses you at a lower rate, you can claim the difference through form P87 online or via a Self Assessment return.
Keep a mileage log recording the date, destination school, purpose and miles driven for every journey.
Multiple Agencies and Tax Codes
Working for several agencies at the same time creates a specific problem: HMRC only allows one employer to apply your Personal Allowance (£12,570 in 2026/27) at a time.
- Primary employer: holds your full 1257L tax code and applies the Personal Allowance
- Secondary employer: uses code BR (flat 20%) or in some cases D0 (40%)
If secondary income is taxed at BR when it should receive part of the Personal Allowance, you will overpay tax during the year. Contact HMRC via your Personal Tax Account or by phone (0300 200 3300) to request that your allowance be split between employers.
At the end of the tax year, HMRC reconciles your position and either issues a refund or sends a P800 tax calculation requesting additional payment.
Professional Expenses You Can Claim
Supply teachers can claim employment expenses that are wholly, exclusively and necessarily incurred in performing their duties:
- Union subscriptions: NEU (National Education Union) or NASUWT membership fees
- Professional registration fees where applicable
- Travel to temporary workplaces: Mileage at HMRC approved rates
- Professional books or resources directly relevant to your current teaching role
You cannot claim ordinary commuting costs, everyday clothing (even if worn to school), or meals during the working day. Expenses under £2,500 can be claimed via form P87 online. Above that threshold, you must register for Self Assessment.
Teachers Pension Scheme: Can Supply Teachers Join?
Access to the Teachers Pension Scheme (TPS) depends on your employment route:
| Employment route | TPS access |
|---|---|
| Local authority supply pool (directly employed) | Usually yes |
| School direct employment contract | Usually yes |
| Agency payroll (employed by agency) | No |
| Umbrella company | No |
If TPS is not available, your agency or umbrella must auto-enrol you into a workplace pension if you earn over £10,000 per year. Minimum contributions are 3% employer and 5% employee of qualifying earnings. This is a defined contribution arrangement and is substantially less generous than TPS.
If you lose TPS access by moving to agency work, consider increasing contributions into a personal pension (SIPP) to compensate for the lost defined benefit.
Agency Payroll vs Umbrella Company
| Agency payroll | Umbrella company | |
|---|---|---|
| Employer | The agency | The umbrella |
| Weekly cost to you | None | £15 to £30 margin |
| Holiday pay | Statutory only | Often included in rate |
| Employment rights | Basic statutory | May include enhanced benefits |
| Pension | Auto-enrolment | Auto-enrolment |
The umbrella margin reduces your net pay, so compare carefully. Ask any umbrella for a worked example based on your actual daily rate before committing to any arrangement.
Keeping Good Records
Even as a PAYE employee, supply teachers benefit from keeping thorough records:
- Log of all schools worked at, with dates and agencies
- All payslips, P45s and P60s
- Mileage log for travel expense claims
- Receipts for professional subscriptions and any work-related purchases
- Correspondence with HMRC about tax code changes
Check your HMRC Personal Tax Account annually to confirm your tax code is correct. The account also shows your National Insurance record, which matters for your future State Pension (currently £241.30 per week for a full 35-year NI record in 2026/27).
Frequently asked questions
Do supply teachers pay tax through PAYE?
Yes. Whether you work through a recruitment agency, an umbrella company, or directly employed by a local authority supply pool, your income is taxed under PAYE. The agency or umbrella deducts income tax and National Insurance before paying you. You do not need to complete a Self Assessment return unless you have other untaxed income. Each payer issues a P60 at the end of the tax year and a P45 when an assignment ends.
Does IR35 apply to supply teachers working through agencies?
IR35 does not apply to supply teachers in the traditional sense because they are directly engaged as workers or employees, not through a personal service company. Most supply teachers work through an agency payroll or umbrella company and are taxed as employees. If you operate through your own limited company providing supply teaching services, IR35 could potentially apply -- but this is unusual, and most supply teachers have no need to consider it.
Can supply teachers claim travel expenses?
Supply teachers can claim the cost of travelling to temporary workplaces -- schools where they work for less than 24 months continuously. If a school becomes a permanent workplace under the 24-month rule, ordinary commuting costs stop being allowable. The HMRC approved mileage rate is 45p per mile for the first 10,000 miles, then 25p per mile, when using your own car. Keep a mileage log recording date, destination and purpose for every journey.
What happens with P45 and P60 when working for multiple agencies?
Each agency or umbrella that pays you will issue a P45 when your assignment ends and a P60 at the end of each tax year. If you work for more than one agency simultaneously, only one can hold your tax code and apply the Personal Allowance. Others will deduct tax on a secondary basis using code BR at a flat 20%. Notify HMRC via your Personal Tax Account to have your Personal Allowance allocated correctly between employers to avoid overpaying tax.
How much tax will I pay on £21,000 supply teaching income in 2026/27?
On £21,000 gross income you pay income tax of £1,686 -- that is 20% on £8,430 (£21,000 minus the £12,570 Personal Allowance). National Insurance at 8% on £8,430 adds £674. Total deductions are approximately £2,360, leaving take-home pay of around £18,640 per year, or about £1,553 per month. Use the take-home pay calculator for a precise figure including any student loan or pension contributions.
Can supply teachers claim professional development expenses?
You can claim the cost of training directly relevant to your current role. A supply teacher refreshing subject knowledge or completing a mandatory safeguarding update can claim that cost against tax. Training for a new career or a subject you do not currently teach is not allowable. HMRC requires employment expenses to be wholly, exclusively and necessarily incurred in the performance of duties. Professional union subscriptions such as NEU or NASUWT membership are a clear allowable expense.
Are supply teachers eligible for the Teachers Pension Scheme?
Eligibility for the Teachers Pension Scheme (TPS) depends on how you are engaged. If directly employed by a local authority supply pool or a school, you may qualify for TPS membership. If you work through an agency or umbrella company, TPS membership is typically not available -- the umbrella auto-enrols you into a workplace pension under standard auto-enrolment rules once you earn over the £10,000 annual trigger. This is a defined contribution pension rather than the TPS defined benefit scheme.
What employment expenses can a supply teacher claim?
Supply teachers employed through PAYE can claim employment expenses via form P87 or Self Assessment, including: professional union subscriptions, General Teaching Council registration fees, business mileage to temporary workplaces at approved rates, and the cost of professional clothing that is a genuine uniform. You cannot claim everyday clothing worn to school, ordinary commuting costs, or the cost of meals during the working day, even if you are working away from your normal area.
Should I use an umbrella company or an agency payroll as a supply teacher?
Both operate as PAYE employment. Agency payroll is simpler -- the agency employs you directly and deducts tax and NI. An umbrella company also employs you but charges a margin of typically £15 to £30 per week for administration. In return, some umbrellas offer employment benefits such as statutory sick pay and holiday pay built into your daily rate. Compare the true net pay after the umbrella margin against direct agency payroll to ensure the arrangement is financially worthwhile.
How do I keep tax records as a supply teacher?
Keep a log of all schools worked at, dates, agencies used, daily rates received, and mileage to temporary workplaces. Retain all P45s, P60s and payslips. Keep receipts for professional subscriptions and any work-related purchases. Check your HMRC Personal Tax Account each year to confirm your tax code is correct and your Personal Allowance is not split incorrectly between agencies. Good records also protect you if HMRC queries a travel expense claim under the 24-month rule.
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