Understanding Tax Code 1263L: What It Means and How It Affects Your Payslip

Written by accounting  »  Updated on: May 21st, 2025

It is very important for people to be familiar with the different aspects of their tax slips, as these components are used to determine numerous things about their employment, payment and other aspects. While there are many things that you can view on your payslip, one of the things which has made people curious is the code 1263L on the slip. Many users often question what this code means and why it appears on their payslips.

Well, if you are also interested in learning more about the same, then this article is going to make sure that you have all the information that you are required to learn about the code and how it can affect your earnings and income. Get ready to be more informed on the way how your payslip works.

Introduction to 1263L and Tax Codes

The first thing you need to know is that 1263L is a tax code; however, what is a tax code then? In simple terms, these specific tax codes are native to the United Kingdom, where the HM Revenue and Customs (HMRC) uses them to determine how much tax deductions should be made from your salary.

A tax code is a series of numbers and letters that are issued by the HMRC, and these tax codes are also used by your employer or pension provider to specify how much tax-free income you should receive in one year. While 1263L is a tax code that appears frequently, it is not the most common tax code used by the HMRC. The tax code 1257L, which is the most used tax code in the UK, signifies that people with personal allowances up to £12,570 can earn money without any tax deduction.

Now, the biggest question is the 1263L tax code meaning. So, let’s break down how numbers and letters are used in this tax code to determine the amount of tax-free income a person can receive. HMRC has a very simple method to determine the personal allowance of a person using the tax code.

All you need to do is multiply the number appearing in the tax code by 10, which means 1263L permits a tax-free allowance of £12,630. On the other hand, the letter ‘L’ states that you are eligible to get the standard tax-free allowance. Compared to the most common code of 127L, 1263L shows that your tax-free allowance is a little more, and here we are also going to explore the various reasons for the same.

Why are you categorised for Tax Code 1263L?

Now that you are familiar with the meaning of tax code 1263L, let’s see why you have been allocated the tax code 1263L in place of 1257L.

Job-Related Tax Reliefs

One of the biggest reasons why you have the code 1263L is because of job-related tax reliefs. If you have claimed certain tax deductions for job-related expenses, like travel costs and uniform maintenance, then HMRC will accept your request and will provide you with the code 1263L that has a higher Personal allowance standard.

Marriage Allowance Transfer

Another reason why you have the tax code 1263L is that your spouse or partner has transferred part of their personal allowance, also known as Marriage Allowance, to you. In this case, your tax code will be adjusted to show the now tax-free amount.

Adjustment for previous overpayments

If you have ever overpaid your taxes before, then HMRC might increase your tax allowance to compensate you for the same. With increased allowance, you might not be required to pay taxes for a certain period of time.

How can you verify if your tax code is correct?

Even a small error in your tax code can change the entirety of your payslip, and you might end up paying too much or too little tax. This is why you should verify whenever you see a change in your tax code.

HMRC sends this notification when your tax code is altered. It clarifies the basis and adjustments behind your code.

www.gov.uk/personal-tax-account provides your current tax code, job history, and code breakdown.

If you have lately applied for work expenses, gotten married, or gotten a refund, your code could have been adjusted.

This is how you can see whether your tax code is correct, and in case you see that it is wrong, you should contact HMRC.



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