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What is Tax Code 1131N?

Among these codes, “1131N” stands out as a specific identifier, prompting curiosity and inquiry. What does Tax Code 1131N signify, and how does it impact individuals within the tax system? Delving into its significance unravels a tailored approach to taxation, often involving considerations of marital status and allowances. Let’s explore the intricacies of Tax Code 1131N and shed light on its implications.

What is Tax Code 1131N?

What is Tax Code 1131N?

Tax code 1131N is a specific tax code used in the United Kingdom’s Pay As You Earn (PAYE) system to calculate an individual’s income tax. Each component of the code signifies different information relevant to the taxpayer’s circumstances. Here’s a breakdown:

1131: This portion of the tax code typically represents the individual’s tax-free Personal Allowance, which is the amount of income they can earn before they start paying income tax. In this case, the tax-free allowance might be £11,313.

N: The “N” suffix mentions that the individual has transferred a few of the Personal Allowance to this employment from a spouse or civil partner using the Marriage Allowance. Marriage Allowance enables couples to transfer a portion of one partner’s unused Personal Allowance to the other, potentially lowering their total tax liability.

How Does Tax Code 1131N Work?

How Does Tax Code 1131N Work?

The 1131N tax code works by indicating that the individual has a tax-free Personal Allowance of £11,313 and has received transferred Personal Allowance from their spouse or civil partner using the Marriage Allowance.

This means they can earn up to £11,313 of income without paying income tax, and any income above this threshold will be taxed according to the applicable tax rates. The “N” suffix signifies the use of Marriage Allowance, where a portion of one partner’s unused allowance is transferred to the other to potentially reduce their overall tax liability.

How to Calculate Tax Code 1131N?

How to Calculate Tax Code 1131N?

To calculate tax code 1131N:

Determine the tax-free Personal Allowance: In this case, the Personal Allowance is £11,313.

  • Consider any additional allowances or adjustments: The “N” suffix indicates that Marriage Allowance has been applied, allowing the individual to receive a portion of their partner’s unused allowance.
  • Apply the tax-free allowance to the individual’s income: Subtract the Personal Allowance from the individual’s total income to determine the amount of taxable income.
  • Calculate income tax owed: Apply the appropriate tax rates to the taxable income based on the individual’s total earnings and tax bands.
  • Consider any other factors or deductions: Account for any other applicable tax credits, deductions, or allowances to arrive at the final tax liability.

It’s essential to review HM Revenue and Customs (HMRC) guidelines or consult with a tax professional for precise calculations and to ensure compliance with current tax regulations.

Benefits of Tax Code 1131N

Benefits of Tax Code 1131N

Here are some potential benefits and implications of using Tax Code 1131N:

  • Tax Savings: By transferring a portion of one partner’s unused personal allowance to the other partner, the couple can potentially reduce their overall tax bill. This is particularly beneficial if one partner earns significantly less than the other, as it allows them to utilize the unused tax-free allowance.
  • Maximizing Tax Efficiency: The Marriage Allowance helps couples make the most of their tax allowances as a household. It ensures that both partners are benefiting from tax-free income to the fullest extent possible.
  • Ease of Administration: The process for transferring the allowance is usually straightforward, often requiring only a simple application process or declaration to the tax authority. This makes it relatively easy for eligible couples to take advantage of the provision.
  • Financial Support for Couples: Particularly in households where one partner earns significantly less or is not working, the ability to transfer personal allowance can provide valuable financial support and help alleviate tax burdens.
  • Encouragement of Marriage or Civil Partnership: Some may argue that provisions like the Marriage Allowance provide an incentive for couples to formalize their relationships through marriage or civil partnership since they provide financial benefits will not be available to unmarried couples.

How to Change Tax Code 1131N?

How to Change Tax Code 1131N?

In the context of the UK tax system, changing your tax code, including from a code like “1131N,” typically involves contacting HM Revenue and Customs (HMRC), the UK tax authority. Here’s a common guide on how to do this:

  • Check Your Tax Code: Before taking any action, it’s essential to understand why your tax code is set to “1131N” and whether it needs to be changed. Search the tax code on your payslip, P45 or P60. Verify if the code is correct for your circumstances or if there have been any changes in your personal or financial situation that might necessitate a different code.
  • Update HMRC: If you believe your tax code needs to be changed, you should contact HMRC. You do this through multiple channels, including:
  • Online: You can update your tax code online through the HMRC website. Log in to your personal tax account or use the HMRC’s online services to make the necessary changes.
  • Phone: You can call HMRC’s helpline and speak to a representative who can assist you in changing your tax code. Be prepared to provide relevant information about your income, employment status, and any changes that have occurred.
  • Post: You can also write to HMRC to request a change to your tax code. Include your personal details, National Insurance number, and any relevant information about why you believe your tax code should be updated.
  • Provide Necessary Information: When contacting HMRC, be ready to provide any information they may require to process your request. This could include details about your income, employment, pensions, benefits, and any other sources of income.
  • Follow Up: After you’ve requested a change to your tax code, it’s a good idea to follow up with HMRC to ensure that your request has been processed and your tax code has been updated accordingly. You can do this by checking your personal tax account online or contacting HMRC again if necessary.
  • Review Your Pay Slip: Once your tax code has been changed, make sure to review your pay slip to ensure that the correct code is being used and that any adjustments have been made accordingly.


Tax Code 1131N emerges as a focal point, carrying significance for couples navigating the complexities of taxation. Understanding its implications provides clarity and empowers individuals to optimize their tax strategies effectively. Whether unlocking potential savings or ensuring compliance, grasping the essence of Tax Code 1131N fosters informed decision-making within the realm of personal finance.

FAQ – What is Tax Code 1131N?

How Does Tax Code 1131N Affect Taxation?

Tax Code 1131N facilitates the transfer of unused personal allowance between spouses or civil partners, potentially reducing their overall tax liability. It allows couples to optimize their tax efficiency by ensuring both partners benefit from tax-free income.

Who is Eligible for Tax Code 1131N?

Eligibility for Tax Code 1131N typically requires that the couple is married or in a civil partnership and meets certain income criteria. Additionally, the partner transferring the allowance must have unused personal allowance available.

Are There Any Limitations or Considerations With Tax Code 1131N?

While Tax Code 1131N can offer tax benefits, it’s essential to consider individual circumstances and consult with a tax professional for personalized advice. Additionally, eligibility criteria and the amount that can be transferred may vary between jurisdictions.


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