Tax Calculator 2nd Job (2026/27): Work Out Your Second Job Take-Home Pay
Quick answer
Use our tax calculator 2nd job tool below to see your combined take-home pay. You are not taxed more for having two jobs. Your Personal Allowance of £12,570 is usually used by your main job, so your second job is taxed from the first pound, often at 20% under a BR tax code. National Insurance is worked out separately for each job.
Last reviewed: [INSERT REVIEW DATE] · Written by Marina Jahan · Reviewed by Shamayun Chowdhury, ACMA, CMA
Taking on extra work is a smart way to boost your income, but the first payslip from a second job can be a shock. Tax seems to vanish from every pound. This page gives you a free calculator for the 2026/27 tax year and explains exactly how second job tax works, so you know what to expect before you sign the contract.
Tax calculator 2nd job: estimate your take-home pay
Enter the yearly salary for each job before tax. The tax calculator 2nd job tool adds them together, applies one Personal Allowance, and works out National Insurance for each employer separately.
Second job tax calculator 2026/27 (England, Wales and Northern Ireland)
Estimate only. Assumes 1257L on the main job and no pension, student loan, benefits in kind or other income. Scottish income tax rates differ.
How to read your results
The line “of which caused by the second job” is the extra income tax you pay because of the second salary. It is the figure most people mean when they ask how much they get taxed on a second job. National Insurance is shown for each job, because each employer works it out on its own.
Example: £30,000 main job plus £10,000 second job
With the default figures, your combined salary is £40,000. Income tax comes to £5,486, of which £2,000 is caused by the second job, because all £10,000 is taxed at 20%. The second job pays no National Insurance at all, because £10,000 is below the £12,570 yearly threshold for that employer. Your take-home pay is about £33,120 a year, or £2,760 a month.
When to use this calculator
- Before accepting a second job offer, to see what you will really keep.
- When a payslip from your second job looks too low.
- To check whether your total pay will push you into the 40% higher rate band.
What the calculator assumes
- 2026/27 rates for England, Wales and Northern Ireland, with the £12,570 Personal Allowance.
- Both jobs are PAYE employments, not self-employed work.
- Your Personal Allowance goes against your main job first.
- No pension contributions, student loan, Marriage Allowance or untaxed income.
Because real payslips depend on your tax code and pay dates, treat the tax calculator 2nd job figures as a yearly estimate. The sections below explain why your first few payslips may look different.
How does tax work with 2 jobs?
HMRC adds the pay from both jobs together and taxes the total at the normal rates. You only get one Personal Allowance, so it is usually given to your main job. Your second employer then taxes every pound you earn there.
Each employer runs its own payroll and only sees the pay it gives you. That is why HMRC sends each one a separate tax code. The code tells the second employer how much of your allowance, if any, it can use, and which rate to apply.
Do you get taxed more on a second job?
No. This is the most common worry about second job tax, and it comes from how the payslip looks. Because your allowance has already been used, the second job has no tax-free slice, so the deduction looks bigger. But over the full year, you pay exactly the same income tax as someone earning the same total from one job.
Problems only arise when the tax code is wrong. An emergency code can give you a second allowance by mistake, which leads to a bill later. A code that is too cautious can take more than you owe, which leads to a refund. The tax calculator 2nd job estimate above shows what the correct yearly figure should be, so you can spot either problem early.
Second job tax rates for 2026/27
There is no special second job tax rate. Your combined income is taxed using the standard bands below, which the tax calculator 2nd job tool uses for England, Wales and Northern Ireland.
| Band | Taxable income | Rate |
|---|---|---|
| Personal Allowance | Up to £12,570 | 0% |
| Basic rate | £12,571 to £50,270 | 20% |
| Higher rate | £50,271 to £125,140 | 40% |
| Additional rate | Over £125,140 | 45% |
Your Personal Allowance shrinks by £1 for every £2 of income over £100,000, so two jobs that together pass that level can cost more than you expect. Scotland uses six income tax bands with different thresholds, so Scottish taxpayers should check the Scottish income tax rates on GOV.UK.
So how much tax on a second job will you pay? If your combined pay stays under £50,270, the tax on a second job is normally 20% of everything it pays you. Once the total crosses £50,270, the part above that line is taxed at 40%. Enter both salaries in the tax calculator 2nd job tool to see exactly where that switch happens for you.
National Insurance on a second job
Unlike income tax, National Insurance is worked out separately for each job. Each employer applies its own threshold, so a small second job may pay no National Insurance at all. That is why the tax calculator 2nd job results show it per job.
For 2026/27, employees pay Class 1 National Insurance at 8% on weekly earnings between £242 and £967, and 2% above that. Each job is assessed on its own, so the thresholds are not shared between employers.
This works in your favour when both jobs are modest. Two jobs paying £12,000 each mean no National Insurance on either, even though one job paying £24,000 would cost around £915 a year. It can work the other way for high earners: if both jobs pay above the upper limit, you may pay more than needed. HMRC can refund the excess, or you can apply in advance to defer some contributions.
Which tax code will your second job use?
Most second jobs use a BR code, which taxes everything at 20%. If your main job already pays higher rate tax, HMRC usually issues D0, which taxes the second job at 40%. If your main job pays less than the allowance, the unused part can be moved across. Our guide to the second job tax code explains each one, and you can read more about the D0 tax code separately.
Tax calculator 2nd job: three worked examples
These examples use the same 2026/27 rules as the tax calculator 2nd job tool. They show how much you get taxed on a second job in three common situations.
| Example 1 | Example 2 | Example 3 | |
|---|---|---|---|
| Main job | £20,000 | £45,000 | £9,000 |
| Second job | £8,000 | £15,000 | £9,000 |
| Total income tax | £3,086 | £11,432 | £1,086 |
| Tax caused by second job | £1,600 | £4,946 | £1,086 |
| NI: main job / second job | £594.40 / £0 | £2,594.40 / £194.40 | £0 / £0 |
| Yearly take-home | £24,319.60 | £45,779.20 | £16,914 |
| Likely second job code | BR | D0 or adjusted code | Split allowance |
Example 1: staying in the basic rate band
Combined pay of £28,000 stays well below £50,270. The whole £8,000 from the second job is taxed at 20%, which is exactly what a BR code collects. The second job is also below the National Insurance threshold, so it pays none.
Example 2: crossing into higher rate
Here the total reaches £60,000. The first £5,270 of the second job is taxed at 20%, and the remaining £9,730 at 40%. A BR code would only take £3,000, leaving about £1,946 unpaid. That is why HMRC often switches the second job to D0 or adjusts the main job’s code instead. If nobody updates the code, expect a bill after the tax year ends.
Example 3: two small jobs
Neither job uses the full £12,570 allowance on its own. HMRC can give £9,000 of the allowance to the first job and the remaining £3,570 to the second. Total tax is just £1,086, and neither job pays National Insurance. Without the split, the second job would be taxed on all £9,000 and you would need to claim a refund.
Second job vs self-employed side hustle
The tax calculator 2nd job figures assume your extra work is a PAYE job. If you are self-employed on the side instead, the rules change, and you may need to file a tax return.
- Trading allowance. The first £1,000 of self-employed income each year is tax-free, and you do not need to report it.
- Self Assessment. Above £1,000, you must register by 5 October after the tax year and pay any tax by 31 January.
- National Insurance. Self-employed profits pay Class 4 National Insurance at 6% between £12,570 and £50,270, and 2% above. Your PAYE salary does not use up this threshold.
- Making Tax Digital. Only self-employment and property income count towards the MTD threshold, not your wages.
Our guide on how to become self-employed explains registration step by step.
Overpaid tax on a second job? How to get it back
If your second job taxed you too much, HMRC normally corrects it after the tax year ends. You can also check and claim sooner through your personal tax account.
Overpayments often happen when you start or leave a job part-way through the year, or when your allowance is not split between two small jobs. Underpayments usually come from an emergency code on the second job, which wrongly gives you a second allowance.
After 5 April, HMRC compares your total pay with the tax collected. If the figures do not match, it usually sends a P800 calculation between June and November. You can also see each job’s pay and tax in your HMRC personal tax account and ask HMRC to update a code during the year. Comparing those figures with the tax calculator 2nd job estimate is a quick way to see whether something has gone wrong.
Student loans and pensions with two jobs
Student loan repayments are worked out separately by each employer, using only the pay from that job. Workplace pensions also apply per job: each employer must automatically enrol you if you are aged 22 or over and earn more than £10,000 a year with them.
5 tips after using the tax calculator 2nd job tool
Once the tax calculator 2nd job estimate shows what you should pay, these steps help make sure your payslips match it.
- Fill in the starter checklist properly. Tick the box that says you have another job. This stops your new employer giving you a second Personal Allowance.
- Check your tax codes. Look at both payslips. Your main job usually shows 1257L and the second shows BR, D0 or a split code.
- Watch the £50,270 line. If your combined pay goes past it, ask HMRC to update a code so you do not build up a bill.
- Use your personal tax account. It shows each employer and the code it holds, and you can report changes online.
- Keep your P60s and final payslips. You will need them to check any P800 HMRC sends after the year ends.
Tax calculator 2nd job: FAQs
Do I need to tell HMRC about a second job?
Usually not. Your new employer reports your pay through PAYE, and HMRC issues a tax code, so tax on second job earnings is collected automatically. You only need to contact HMRC if the code looks wrong or the work is self-employed.
Why is my second job taxed at 20% from the first pound?
Because your Personal Allowance is already used by your main job. This 2nd job tax is not an extra charge. The second job normally has a BR code, which taxes all of its pay at the basic rate.
Can I split my Personal Allowance between two jobs?
Yes, if your main job pays less than £12,570. Contact HMRC or use your personal tax account to move the unused part to your second job.
Do I pay National Insurance on both jobs?
Each job is checked separately. You only pay National Insurance on a job if your pay from that employer goes above the threshold.
Will a second job push me into the higher rate?
It can. Two jobs tax is based on your combined pay, so if it is over £50,270, the part above that is taxed at 40%. The tax calculator 2nd job tool shows where that happens.
Do I need a tax return if I have two jobs?
Not usually. With 2 jobs and tax codes that are correct, PAYE collects everything. You do need one for self-employed income over £1,000.
How accurate is a second job tax calculator?
Any 2nd job tax calculator gives a reliable yearly estimate for standard cases. Pensions, student loans, benefits in kind and Scottish rates can change the result.
What if my tax code is wrong?
Tell HMRC as soon as you notice. It will send a new code to your employer, and any over- or underpayment is usually corrected through your pay.
Final verdict on the tax calculator 2nd job
A second job is not taxed more heavily; it just has no tax-free slice because your allowance is already used. Run your figures through the tax calculator 2nd job tool, check both tax codes, and keep an eye on the £50,270 line to avoid surprises.
Your next steps
- Enter both salaries in the tax calculator 2nd job tool at the top of this page.
- Compare the result with your payslips and tax codes.
- Contact HMRC if a code looks wrong.
Not sure your second job is taxed correctly?
Major Accountancy can check your tax codes, claim back overpaid tax and handle your Self Assessment if you also work for yourself.
About the author and reviewer
Written by Marina Jahan
Senior Content Strategist, SEO and Marketing Specialist · Major Accountancy Ltd
Marina writes plain-English guides to UK tax, researched from GOV.UK and HMRC sources. [ADD: years of experience and any relevant qualification, only if held.]
Technically reviewed by Shamayun Chowdhury
BA (Hons), MSc, ACMA, CMA, CIPFA (Affil), MAAT, AATQB
Senior Accountant, Leicester · Director, Major Accountancy Ltd · Lecturer, Nottingham Trent University · 15+ years’ UK practice
Checked against GOV.UK in October 2026. The calculator gives an estimate for general information only and is not personal tax advice.