Tax Rules for Part-Time Wages & Multiple Hourly Jobs

With the rise of the gig economy and flexible working arrangements, holding multiple part-time hourly jobs has become increasingly common in the UK. While working multiple jobs can increase your income, it also introduces complexity to your tax affairs. If you have more than one employer, you must ensure that your personal allowance is allocated correctly across your jobs. If not managed properly, you may face emergency tax deductions or end up with an unexpected tax bill at the end of the year. In this guide, we look at the tax rules for part-time wages and multiple hourly jobs in the 2026/27 tax year.

How Your Personal Allowance is Allocated

HMRC only allows you to claim one standard Personal Allowance of £12,570. This allowance is typically applied to your primary job (usually the job that pays you the most). Your primary employer will use the standard **1257L** tax code, which protects your first £12,570 of earnings from Income Tax. Any secondary jobs are generally taxed from the very first penny, as your personal allowance is already fully utilized. The tax codes used for secondary jobs include:

• BR Code (Basic Rate): Your entire earnings at this job are taxed at the flat basic rate of 20%, without any tax-free allowance. This is correct if your combined income from all jobs is below £50,270.
• D0 Code (Higher Rate): Your entire earnings at this job are taxed at the 40% higher rate. This code is used if your primary job already utilizes your entire basic rate tax band.
• D1 Code (Additional Rate): Your entire earnings at this job are taxed at the 45% additional rate.

Splitting Your Tax Code

If you have two regular part-time jobs and earn less than £12,570 in each, you can ask HMRC to split your tax code. This prevents tax deductions at your secondary job. For example, if you earn £8,000 at Job A and £4,500 at Job B, you can ask HMRC to allocate £8,000 of your allowance to Job A (tax code 800L) and the remaining £4,570 to Job B (tax code 457L). This ensures that you pay no Income Tax on either wage, maximizing your take-home pay.

National Insurance Rules for Multiple Jobs

Unlike Income Tax, which is based on your combined annual income, National Insurance is calculated per employer. Each employer operates National Insurance thresholds independently. The thresholds are:

• Primary Threshold: You do not pay employee National Insurance on earnings below £242 per week from any single employer.
• Class 1 NICs: You pay 8% on weekly earnings between £242 and £967 per employer.

This structure can be beneficial if you hold multiple part-time jobs. For example, if you work two separate jobs and earn £200 per week at each, your combined income is £400 per week. However, because both wages are below the £242 primary threshold, you will pay **zero National Insurance Contributions**. If you earned £400 per week from a single employer, you would pay 8% National Insurance on the amount exceeding the £242 threshold.

Frequently Asked Questions: Part-Time & Multiple Jobs

1. How is tax calculated on a second hourly job in the UK?
Your second hourly job is typically taxed from the first penny using the BR tax code, which applies a flat 20% Income Tax deduction because your £12,570 Personal Allowance is allocated to your first job. This prevents you from underpaying tax on your combined income.

2. Can I split my tax code between two part-time jobs?
Yes, you can contact HMRC to split your standard £12,570 Personal Allowance across your part-time jobs in proportion to your projected earnings. This is highly recommended to avoid paying unnecessary tax during the year.

3. What does the BR tax code mean?
The BR tax code stands for “Basic Rate” and means that your entire income from this employer is taxed at the flat rate of 20% without any personal tax-free allowance. It is the standard code used for secondary employment.

4. Do I pay National Insurance twice if I have two jobs?
No, you do not pay double; National Insurance is calculated independently by each employer, so you pay 8% NICs only on the portion of your wage that exceeds £242 per week at each job. If you earn less than £242 at both jobs, you pay zero National Insurance.

5. Why was I put on the BR tax code for my primary job?
You can be placed on a BR code if your employer does not have your P45 from your previous job, or if HMRC has not yet updated their records to identify your primary employment. You can resolve this by completing a Starter Checklist or contacting HMRC.

6. How do I reclaim overpaid tax from multiple jobs?
If you overpaid tax during the year because your personal allowance was not fully utilized, HMRC will calculate this after the end of the tax year and issue a P800 tax refund check. Alternatively, you can claim a refund online through your personal tax account.

7. Do I need to notify HMRC if I start a second job?
Yes, you should complete the Starter Checklist provided by your new employer, checking the box that indicates you have another job, which helps HMRC issue the correct tax code. HMRC will receive the payroll data and update your records automatically.

8. Does my second employer know about my first job?
No, your second employer only receives your allocated tax code from HMRC; they do not receive details about your other employers or your earnings from other sources. Your personal financial data remains confidential.

9. How are pension contributions calculated with two jobs?
Workplace pension contributions are assessed independently by each employer based on your earnings at that specific job. You will be enrolled in each scheme separately if your earnings at that employer exceed the £192 weekly threshold.

10. Can I claim the marriage allowance if I work part-time?
Yes, if your part-time earnings are below the personal allowance threshold, you can transfer up to £1,260 of your unused allowance to your spouse, provided they are a basic rate taxpayer. This can reduce their annual tax bill by up to £252.