Income Tax for International Students Working Part-Time in the UK

Landing in the UK on your Student Route visa (formerly Tier 4) is an incredible milestone. Whether you are settling into your dorms at the University of Manchester, exploring the vibrant campus at Coventry University, or navigating city life near the University of Birmingham, taking on a part-time job is a fantastic way to build your CV, boost your living funds, and gain invaluable British workplace experience.

However, once you start earning money, a common question arises: Do international students pay income tax in the UK? The short answer is yes, international students are subject to the same income tax rules as UK residents. But because most student part-time jobs pay modest hourly wages within specific hour caps (usually 20 hours per week during term time), many students do not end up owing any tax at all. In this comprehensive guide, compiled by the UK Freshers Guide team, we break down everything you need to know about income tax, National Insurance, tax codes, and how to claim back any overpaid tax.

Understanding the UK Tax Year and Personal Allowance

In the UK, the tax year does not run from January 1st to December 31st. Instead, it runs from 6th April of one year to 5th April of the following year. Every individual in the UK—regardless of their nationality or visa status—is entitled to a Personal Allowance. This is the amount of income you can earn each tax year completely tax-free.

For the current tax year, the standard Personal Allowance is £12,570. This means that if your total earnings from all employment combined do not exceed £12,570 within the tax year, you do not pay a single penny of income tax. If you earn above that threshold, you only pay tax on the amount that exceeds £12,570.

How the PAYE (Pay As You Earn) System Works

When you secure a part-time job—whether working in retail, hospitality, or campus ambassadorship at institutions like the University of Leeds or University of Hertfordshire—your employer will register you under the PAYE (Pay As You Earn) system.

HM Revenue and Customs (HMR&C) uses PAYE to collect income tax and National Insurance contributions from your wages automatically before you even receive your paycheck. Each month or week, your payslip will show deductions. Do not panic if you see a tax deduction on your very first payslip! If your total projected annual earnings are below the Personal Allowance, the system will eventually self-correct, or you can claim a refund.

What is a Tax Code?

Your employer will assign you a tax code (such as the standard emergency or full-allowance code 1257L). This code tells your employer how much tax-free income you are allowed before they start deducting tax. You can view your tax code by setting up an online personal tax account via the official GOV.UK website.

National Insurance (NI) Contributions

Aside from income tax, you may also see National Insurance (NI) deducted from your pay. You need a National Insurance Number to work legally in the UK. NI is a separate contribution that funds state benefits and healthcare.

Unlike income tax—which is calculated on your total annual earnings—National Insurance is calculated on a pay-period basis (weekly or monthly). You only pay NI if you earn more than the threshold in a specific pay period (currently £242 per week or £1,048 per month). If you work variable hours and earn over that amount in a single busy week (such as during Christmas shifts), a small amount of NI will be deducted, even if your overall yearly earnings are low.

Step-by-Step: How to Get Your National Insurance Number

Before you can receive your proper pay and ensure your taxes are tracked correctly, you must apply for a National Insurance Number (NINo). Follow these steps:

1. Secure a part-time job or actively search for employment in the UK.
2. Visit the official GOV.UK portal and search for 'Apply for a National Insurance number'.
3. Fill out the online application form using your passport, biometric residence permit (BRP) card or eVisa details, and UK residential address.
4. Submit proof of your right to work in the UK (your Student Route visa vignette/eVisa and university enrolment confirmation).
5. Wait for your NINo confirmation letter to arrive in the post, and provide the number to your employer's HR or payroll department as soon as possible.

What Happens if You Overpay Tax? (And How to Claim a Refund)

International students frequently overpay income tax. This usually happens for three reasons:

• You only worked for a few months of the tax year (e.g., during summer vacation) and earned less than £12,570 in total, but tax was deducted on higher monthly earnings projections.
• Your employer used an emergency tax code when you first started working.
• You left your job and returned to your home country before the tax year ended.

If you have left the UK or finished your studies, you can claim your overpaid tax back by filling out HMRC Form P50 (if you have stopped working but remain in the UK) or Form P85 (if you are leaving the UK permanently). HMRC will review your records and issue a cheque or direct bank transfer refund.

Summary Comparison: Income Tax vs. National Insurance