What does lx mean on tax code

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Last updated: April 4, 2026

Quick Answer: The 'LX' tax code typically means that an employee is not paying any tax on their income because they are either earning below the personal allowance threshold or their tax has been covered by other means. This code is usually applied to a main employment.

Key Facts

What Does LX Mean on a Tax Code?

Understanding your tax code is crucial for ensuring you're paying the correct amount of tax. Tax codes are used by employers to calculate how much tax should be deducted from your salary. If you've noticed 'LX' on your payslip or tax notification, you might be wondering what it signifies. This guide will break down the meaning of the 'LX' tax code, why you might receive it, and what it means for your personal tax situation.

Understanding Tax Codes

Before delving into the specifics of the 'LX' code, it's helpful to understand the general purpose of tax codes. In the UK, a tax code is a combination of numbers and letters that tells your employer how much tax to deduct from your wages. It primarily reflects your Personal Allowance – the amount of income you can earn each year without paying income tax. Most people have a standard Personal Allowance, which is currently £12,570 for the 2023/2024 tax year. Your tax code is usually made up of this amount, minus any tax you owe from previous years or benefits you receive from your employer (like a company car), followed by a letter indicating specific circumstances.

The Meaning of the 'LX' Tax Code

The 'LX' tax code is relatively straightforward. It signifies that you are not expected to pay any income tax on your earnings from this specific employment. This usually happens for one of two main reasons:

1. Income Below Personal Allowance

The most common reason for an 'LX' tax code is that your income from this employment is below your Personal Allowance. For example, if your annual income is £12,570 or less, you won't owe any income tax on it, and therefore, your tax code would reflect this by showing 'LX'. This ensures that individuals earning modest amounts are not burdened with tax deductions.

2. Tax Covered Elsewhere

Another reason you might receive an 'LX' tax code is if your tax liability is being covered through another source. This could be the case if you have other income that is taxed, or if you have a different job where your tax is being paid. For instance, if you have a second job and your tax code for that job includes all your Personal Allowance, your main job might be assigned an 'LX' code because all your tax-free allowance is already allocated.

Who Assigns Tax Codes?

Tax codes are issued by HM Revenue and Customs (HMRC), the UK's tax authority. HMRC uses information from your employer, P45 forms, P60 forms, and any other relevant tax documents to determine your correct tax code. If you believe your tax code is incorrect, you should contact HMRC directly to discuss it.

What Does 'LX' Mean for Your Pay?

If you have an 'LX' tax code on your main employment, it means that your employer will not deduct any income tax from your salary. Your National Insurance contributions, however, will still be calculated and deducted as usual, provided you earn above the National Insurance threshold. This code simplifies tax calculations for those earning below the tax-free threshold, preventing unnecessary deductions and potential refunds.

Other Common Tax Codes (for comparison)

What If You Think Your Tax Code is Wrong?

It is essential to ensure your tax code is correct. If you receive an 'LX' tax code and believe you should be paying tax, or if you have concerns about your tax code generally, you should contact HMRC. You can usually find HMRC's contact details on their official website or on any correspondence they send you. Incorrect tax codes can lead to you paying too much or too little tax, which can result in a tax bill later on.

Conclusion

In summary, the 'LX' tax code indicates that no income tax is being deducted from your salary for that particular employment. This is typically because your earnings are below your Personal Allowance or your tax liability is being met through other means. It's always a good practice to review your payslips and any tax notifications from HMRC to ensure accuracy.

Sources

  1. Check your Income Tax code - GOV.UKCrown
  2. Tax codes and what they mean - Citizens AdviceCC-BY-NC-SA-4.0

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