Tax Codes Explained What 1257L BR and 0T Mean on Your Payslip

Seeing a code such as 1257L, BR or 0T on your payslip can raise an immediate question: Why am I paying this much tax? Your tax code may look like a random combination of numbers and letters, but it tells your employer or pension provider how much Income Tax to deduct from your pay through PAYE.

For the 2026–27 tax year, the standard Personal Allowance is £12,570. The most common tax code is 1257L, which generally represents that standard tax-free allowance. HMRC also uses codes such as BR and 0T when someone's circumstances mean that their standard allowance should not be applied to a particular job or pension.

The important point is that BR and 0T do not necessarily mean you have done anything wrong. They can be perfectly legitimate codes, particularly when you have a second job, start a new job, have more than one source of income, or HMRC does not yet have enough information to calculate your allowance correctly.

This guide explains exactly what these codes mean, how they affect your take-home pay, why your tax code can change, how emergency tax codes work, and what you can do if the code on your payslip appears incorrect.

Understanding the UK Tax Codes on Your Payslip

What exactly is a tax code?

A tax code is an instruction used by your employer or pension provider to calculate how much Income Tax should be taken from your pay.

HMRC normally determines your tax code using information it holds about your income, allowances, benefits and other taxable amounts. Your employer then applies that code through PAYE.

You can usually find your tax code:

• On your payslip
• In your HMRC online tax account
• In the HMRC app
• On a tax code notice from HMRC
• Through your employer's payroll information

HMRC says you receive a tax code for each employment or pension you have.

That means someone with two jobs can have two different tax codes. One job might use 1257L while another uses BR, for example.

What does the number in a tax code mean?

The number generally represents the amount of tax-free income allocated to that employment or pension.

For a standard 1257L code, HMRC uses the number 1257. Multiplying it by 10 gives £12,570, matching the standard Personal Allowance for 2026–27.

This does not mean you receive £12,570 from your employer tax-free every month. It represents the annual amount of income that can normally be received before Income Tax is charged, subject to your circumstances.

For example, if your annual taxable salary is £30,000 and you have a standard £12,570 Personal Allowance, approximately £17,430 falls above the allowance and is subject to the relevant Income Tax rules.

What does the letter L mean?

The L in 1257L indicates entitlement to the standard tax-free Personal Allowance.

So:

1257 = £12,570 tax-free allowance

L = standard Personal Allowance applies

Together, 1257L is the familiar standard code for many employees with one job and straightforward tax circumstances.

Why is 1257L the standard tax code?

For 2026–27, the Personal Allowance remains £12,570. HMRC's payroll guidance confirms that the standard employee allowance is £12,570, equivalent to £1,048 per month or £242 per week.

The standard tax code therefore reflects this allowance for many people.

However, 1257L is not automatically correct for everyone. Your allowance can be affected by factors such as taxable employment benefits, untaxed income, pension income, certain tax reliefs, Marriage Allowance and the High Income Child Benefit Charge.

For people with adjusted net income above £100,000, the Personal Allowance is reduced by £1 for every £2 of income above that threshold and can eventually fall to zero.

What does BR mean on a payslip?

BR means all income from that particular job or pension is taxed at the basic rate.

For a standard UK BR code, that generally means Income Tax is deducted at 20% from all taxable pay from that employment, with no Personal Allowance allocated to it.

BR is most commonly associated with a second job or pension.

For example, imagine you have:

• Main job: £32,000 a year
• Second job: £8,000 a year

HMRC may allocate your Personal Allowance to your main employment. Your second employer may then use BR, meaning tax is deducted from the second job at the basic rate.

This does not necessarily mean you are paying too much tax overall. The tax code is designed to divide your allowances and taxable income between your different income sources.

Does BR mean you are on emergency tax?

No. BR and emergency tax are not the same thing.

BR is a specific tax code indicating that all taxable income from that source is taxed at the basic rate.

An emergency tax arrangement can involve a code such as:

• 1257L W1
• 1257L M1
• 1257L X

HMRC identifies W1, M1 and X as emergency tax code indicators.

So if your payslip says BR, do not automatically assume you are on emergency tax.

What does 0T mean?

0T means no Personal Allowance is available against that particular employment or pension.

HMRC guidance says 0T can be used when your Personal Allowance has been used up or when your employer does not have enough information to give you an appropriate tax code.

Unlike BR, 0T does not simply mean that all income is taxed at 20%.

Under 0T, taxable income can be charged at the applicable basic, higher and additional rates depending on the level of your earnings.

For 2026–27, the main rates for England, Wales and Northern Ireland are:

These rates apply to standard non-savings, non-dividend income for England, Wales and Northern Ireland. Scotland has different Income Tax bands.

Why might someone receive a 0T tax code?

There are several situations in which HMRC or an employer may use 0T.

Common examples include:

Starting a new job without sufficient starter information

If your new employer does not have a P45 or enough information to determine your tax position, 0T can be used temporarily.

Your Personal Allowance has already been used

If your entire allowance has been allocated elsewhere, another employment may receive 0T.

Your allowance has been reduced to zero

People with sufficiently high income can lose their Personal Allowance. HMRC states that

the allowance can fall to zero when adjusted net income reaches £125,140.

Complex or incomplete employment information

A new employment record can initially operate under 0T while HMRC obtains or processes the information needed to calculate the appropriate code.

BR vs 0T: what is the difference?

The simplest way to remember the difference is:

BR = all taxable income from that job is taxed at the basic rate.

0T = no Personal Allowance is available, and the applicable tax rates can vary with income.

That distinction can make a significant difference for someone with a higher salary.

For example, suppose a person earns £60,000 from a second employment. A BR code would generally apply 20% to taxable income from that source. A 0T code, by contrast, can result in income entering higher-rate taxation once the relevant threshold is reached.

HMRC's guidance confirms the specific purposes of BR and 0T codes and the treatment of W1, M1 and X emergency indicators.

Is 1257L always the correct tax code?

No.

Although 1257L is common, your correct tax code depends on your individual circumstances.

HMRC calculates tax codes by considering your Personal Allowance and making adjustments for relevant income and deductions. These can include untaxed interest, other earnings, company benefits and certain tax charges.

For example, a company car or private medical insurance provided through employment can affect the amount of tax-free income represented by your tax code.

A person with £12,570 of standard allowance could therefore receive a different code if HMRC needs to account for taxable benefits or other adjustments.

What happens if you have two jobs?

Having two jobs is one of the most common reasons people see different tax codes.

You generally cannot use the same Personal Allowance twice.

Suppose your income is:

• Job A: £28,000
• Job B: £10,000

HMRC may allocate your Personal Allowance primarily to Job A. Job B could then use BR.

This arrangement can make payroll deductions look different between the two jobs even though your total tax liability is based on your overall taxable income.

The important thing is to look at your combined income, rather than assuming that every employer should use 1257L.

What if you change jobs?

Changing jobs can temporarily disrupt your tax code.

When you leave an employer, your P45 contains important information about your employment and tax position. Giving your P45 to your new employer helps them establish the correct payroll information.

If you start a job without the required information, your employer may temporarily use an emergency code or another code such as 0T. HMRC specifically explains that emergency codes can be used when a new employee does not have a P45.

If the correct information is later received, HMRC can issue an updated code.

What do W1, M1 and X mean?

These are emergency tax indicators.

W1 means Week 1.

M1 means Month 1.

X is another emergency-code indicator.

Under these arrangements, tax is calculated using the current pay period rather than taking the normal cumulative approach across the tax year. HMRC describes W1 and M1 as emergency tax codes.

For example, you might see:

1257L M1

This is not the same as ordinary 1257L. The M1 indicates that the code is being operated on an emergency, non-cumulative basis.

Why can an emergency tax code reduce your take-home pay?

An emergency code can sometimes result in more tax being deducted than you expect, particularly if HMRC does not yet have complete information about your previous earnings and tax paid.

That does not necessarily mean the money is permanently lost.

Once HMRC receives the correct information and updates your tax code, payroll may adjust the amount deducted. Whether and when a refund occurs depends on your circumstances and when the correction is made.

The best approach is to check your HMRC tax record rather than trying to estimate the correct code solely from one payslip.

How can you check whether your tax code is correct?

HMRC provides an online tax-code checking service that can show what your tax code means, how much tax you are expected to pay and what information may need updating.

You can also check your current tax code through your HMRC online account or the HMRC app.

When checking it, look at:

1. Your current employer.
2. Your annual salary or estimated income.
3. Other jobs or pensions.
4. Taxable workplace benefits.
5. State Pension income, if applicable.
6. Any untaxed income.
7. Whether you have recently changed jobs.
8. Whether HMRC has sent you a tax code notice.

If something is wrong, update HMRC rather than simply asking your employer to choose a different code. Your employer generally applies the code supplied through the PAYE system.

What should you do if BR appears on your only job?

If BR appears on your only job, it is worth checking why.

BR can be appropriate in some circumstances, but it usually means the Personal Allowance is not being applied to that employment.

Possible reasons include:

• HMRC believes you have another employment.
• You have another pension or income source.
• You recently changed jobs.
• Your previous employment record has not been closed correctly.
• HMRC has incomplete information.
• Your Personal Allowance has been allocated elsewhere.

Check your HMRC tax record and compare it with your actual circumstances.

If HMRC's records are wrong, provide the correct information so the code can be reviewed.

What should you do if 0T appears unexpectedly?

If 0T appears unexpectedly, do not immediately assume that your employer has made a mistake.

First, check whether:

• You have recently started a new job.
• You have not provided your P45.
• You have another job.
• Your Personal Allowance is already being used elsewhere.
• HMRC has information suggesting that your allowance has been fully used.
• Your circumstances have recently changed.

HMRC's internal PAYE guidance specifically says 0T can be used for new employees who have

not provided sufficient starter information and when the Personal Allowance has been used up.

If none of those circumstances applies, checking your HMRC account is sensible.

Can your tax code change during the year?

Yes.

Your tax code can change when HMRC receives new information about your income or circumstances.

Examples include:

• Starting or leaving a job
• Receiving taxable benefits
• Taking on a second job
• Receiving a pension
• Changes to estimated income
• Changes to Marriage Allowance
• Changes involving the High Income Child Benefit Charge
• Correction of an earlier tax-code calculation

HMRC says it will usually contact you to explain how an individual tax code was worked out when the code changes.

A changed tax code does not automatically mean you are being penalised. It can simply mean HMRC has updated its estimate of your tax position.

What is the difference between a tax code and a tax rate?

This is an easy distinction to miss.

A tax code tells your employer how to calculate PAYE deductions for you.

A tax rate is the percentage applied to taxable income within a particular band.

For example, 1257L is a tax code. The 20% basic rate is a tax rate.

Your tax code therefore does not mean that you pay a percentage equal to the numbers in the code. The 1257 in 1257L represents an allowance calculation, not a tax rate.

Does your tax code affect National Insurance?

Your tax code primarily determines how Income Tax is deducted through PAYE.

National Insurance is calculated separately using its own rules and thresholds.

Therefore, changing from 1257L to BR does not mean National Insurance is automatically calculated using BR. Your payslip may show Income Tax and National Insurance as separate deductions.

This is one reason your total deductions can differ from the amount you might calculate from your tax code alone.

What happens if HMRC has overcharged you?

If your tax code was incorrect and too much Income Tax was deducted, HMRC or your employer may correct the position depending on when the error is identified and how the PAYE system is operating.

The outcome depends on the circumstances.

If the error is corrected during the tax year, the PAYE system may adjust later deductions so that the overall tax collected moves towards the correct amount.

If HMRC determines after the tax year that you have paid too much tax, you may receive a repayment or instructions explaining how to claim it.

Do not assume every change in your payslip represents an overpayment. Check your tax calculation and coding notice first.

What if you have paid too little tax?

The reverse can also happen.

If too little tax has been collected because of an incorrect or outdated code, HMRC may adjust your tax code to collect the shortfall.

In some situations, tax owed from an earlier year can be reflected through a future tax code, subject to HMRC's rules.

This is why it is better to correct inaccurate information promptly rather than waiting until the end of the tax year.

How do Scottish and Welsh tax codes differ?

Tax codes can contain prefixes that identify where the relevant Income Tax rates apply.

A Scottish tax code normally starts with S, while a Welsh tax code starts with C. Examples include:

• S1257L
• SBR
• S0T
• C1257L
• CBR
• C0T

The prefix matters because Scottish taxpayers have Scottish Income Tax rates, while Welsh taxpayers are subject to Welsh Income Tax rates.

For 2026–27, Scotland has different Income Tax bands from England, Wales and Northern Ireland.

So someone should not assume that a BR or 0T code always produces exactly the same deduction regardless of where they live.

Why your payslip can look different from someone else's

Two employees earning the same salary can have different tax codes.

One person might have:

1257L

Another might have:

BR

Another could have:

0T

And another might have:

S1257L

The difference can arise from their individual tax circumstances rather than their employer paying them differently.

For example, one employee may have a single job and the standard allowance, while another has a second job and uses their Personal Allowance elsewhere.

The tax code is therefore personal to the taxpayer's circumstances.

A practical example of 1257L, BR and 0T

Imagine three employees each receive £3,000 in a particular month.

Employee A — 1257L

Their main employment uses the standard Personal Allowance. Their PAYE calculation takes account of the allowance and the relevant tax bands.

Employee B — BR

This is their second employment. Their Personal Allowance is allocated to another job, so taxable pay from this job is generally taxed at the basic rate.

Employee C — 0T

No Personal Allowance is available at this source. Depending on their overall income, the applicable tax bands can result in basic- and potentially higher-rate taxation.

All three employees can therefore receive the same gross monthly pay but have different Income Tax deductions.

Common mistakes people make with tax codes

One of the biggest mistakes is assuming that 1257L is automatically correct for everyone.

Other common mistakes include:

• Treating BR as an emergency code.
• Assuming 0T means you have done something wrong.
• Looking only at one job instead of total income.
• Forgetting about an old employment record.
• Ignoring a tax-code notice from HMRC.
• Confusing Income Tax with National Insurance.
• Assuming every change in tax deducted is an error.
• Waiting too long to report incorrect employment information.

Your tax code is designed to reflect your circumstances, so the right question is not simply “Is this code common?” but “Does this code reflect my current income and allowances?”

When should you contact HMRC?

Consider checking with HMRC if:

• Your only job suddenly changes to BR.
• You receive 0T and do not understand why.
• Your employer has your P45 but the code remains unexpected.
• HMRC lists an employment you left.
• Your salary estimate is substantially wrong.
• You have stopped receiving a taxable benefit but your code still reflects it.
• Your tax code changes without an obvious explanation.
• Your payslip deductions appear inconsistent with the information HMRC holds.

HMRC's tax-code checker can help you understand the code and identify information that may need updating.

The future of PAYE and tax codes

Tax codes are likely to remain an important part of the UK's PAYE system, but the way people interact with them is becoming increasingly digital.

HMRC already allows taxpayers to view tax information online and through its app, while employers receive coding information electronically through PAYE systems.

Over time, better data sharing and more automated payroll processes could reduce some of the delays that occur when people change jobs or their circumstances change.

However, automation does not eliminate the need for individuals to check their information. A payroll system can apply the code it receives, but an incorrect employment record or outdated income estimate can still lead to an incorrect deduction.

For employees, the most useful future-proof habit is simple: keep your HMRC employment and income information accurate and review your tax code when your circumstances change.

Key Insights

• 1257L generally represents the standard £12,570 Personal Allowance for 2026–27.
• BR normally means all taxable income from that particular job or pension is taxed at the basic rate.
• 0T means no Personal Allowance is available against that particular source.
• BR is commonly used for a second job or pension, while 0T can arise from missing employment information or an allowance already being used.
• 1257L W1, M1 or X is different from ordinary 1257L because those suffixes indicate an emergency tax arrangement.
• Your tax code can change when your employment, pension, benefits or other income changes.
• Scottish and Welsh tax codes can contain S or C prefixes and use the relevant regional Income Tax rates.
• If your code looks wrong, check your HMRC tax record rather than simply guessing which code you should have.

FAQ

1. What does 1257L mean on a payslip?

1257L generally means you have the standard Personal Allowance of £12,570 for the tax year. The 1257 represents the allowance when multiplied by 10, while L indicates entitlement to the standard allowance.

2. What does BR mean on a payslip?

BR means all taxable income from that particular job or pension is taxed at the basic rate. It is commonly used for a second job or pension where your Personal Allowance is being used elsewhere.

3. What does 0T mean on a payslip?

0T means there is no Personal Allowance available against that particular employment or pension. It can be used when an allowance has been used up or when an employer does not have enough information to establish the correct tax code.

4. Is BR an emergency tax code?

No. BR is a specific PAYE tax code that normally applies the basic rate to taxable income from that source. Emergency arrangements are indicated by codes such as W1, M1 or X.

5. Is 0T an emergency tax code?

0T can be used in certain new-employment situations where sufficient information is unavailable, but 0T itself is not the same thing as an emergency indicator such as W1 or M1.

6. Why have I suddenly been put on BR?

BR may appear because you have started another job, receive another pension or HMRC believes your Personal Allowance is allocated elsewhere. If BR appears on your only job unexpectedly, check your HMRC employment records.

7. Why have I been put on 0T tax code?

You may have been placed on 0T because your Personal Allowance has been used elsewhere or your new employer does not yet have enough information to calculate your code. Checking your HMRC record can reveal the reason.

8. Can 1257L be an emergency tax code?

Yes. Ordinary 1257L is not an emergency code, but versions such as 1257L W1, 1257L M1 and 1257L X are emergency tax arrangements.

9. Can I have BR on one job and 1257L on another?

Yes. This can happen when your Personal Allowance is allocated to one employment while another employment is treated as a secondary source and taxed using BR.

10. Does BR mean I am paying too much tax?

Not necessarily. BR may be the correct code for a second job. Whether you ultimately pay the correct amount depends on your total taxable income and your overall tax position.

11. Does 0T mean I will pay 40% tax?

Not automatically. 0T means there is no Personal Allowance at that source. Income is then taxed according to the applicable tax bands, so some income may be taxed at 20%, while higher earnings can enter higher-rate bands.

12. Can my tax code change during the tax year?

Yes. HMRC can change your tax code when it receives new information about your employment, benefits, pension, income or allowances.

13. Where can I check my tax code?

You can check your tax code on your payslip, through your HMRC online account, in the HMRC app or through an HMRC tax-code notice. HMRC also provides an online tax-code checking service.

14. What should I do if my tax code is wrong?

Check your employment, income and allowance information with HMRC. If the information is inaccurate, update it. Your employer normally applies the tax code supplied through the PAYE system rather than choosing the code independently.

15. Does 1257L apply to everyone in the UK?

No. 1257L is commonly used for people entitled to the standard Personal Allowance, but individual circumstances can produce different codes. Scotland also has different Income Tax rates, while Welsh taxpayers have Welsh Income Tax arrangements.

Final Thoughts

Your tax code is more than a few characters printed on a payslip. It is the mechanism your employer uses to turn HMRC's assessment of your tax circumstances into the Income Tax deducted from your wages.

For many employees, 1257L is the familiar standard code because it reflects the £12,570 Personal Allowance. BR is commonly associated with a second job or pension and applies the basic rate to taxable income from that source. 0T means there is no Personal Allowance available against that particular income source and can appear when an allowance has been used elsewhere or when HMRC does not yet have enough information.

The biggest mistake is to judge a tax code simply by whether it looks unusual.

A code that seems worrying can be correct, while a familiar code can become wrong after a change in circumstances.

If you have recently changed jobs, started a second source of income, received taxable benefits or noticed an unexpected change in your deductions, check your HMRC tax information. The sooner an inaccurate record is corrected, the easier it is to keep your PAYE deductions aligned with your actual tax position.

Disclaimer: The information provided in this article is for general informational and research purposes only. Company details, features, services, and market positions may change over time. Readers are advised to visit official company websites and conduct independent research before making any business decisions or purchasing services.