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What is a P6 Form?

Updated: Dec 13, 2023

The P6 form is a document issued by HMRC that contains information about your tax code. Your tax code is a combination of numbers and letters that is used by your employer or clients to calculate how much tax should be deducted from your earnings. The P6 form is used to inform your employer or clients of any changes to your tax code, such as an increase or decrease in your personal allowance.


The P6 form is a critical component in the UK's tax system, acting as a key communication tool between HM Revenue & Customs (HMRC) and taxpayers. This article is structured to provide a comprehensive understanding of the P6 form, its implications, and the necessary actions required upon its receipt.


HM Revenue & Customs (HMRC) issues a P6 form to employers to provide information about an employee's tax code and previous pay. HMRC will send you the P6 form if an employee's tax identification number/ tax code changes during the fiscal year. The new code must be used from the first day of payment after receiving the notification.

What is a P6 Form?


Nature and Purpose

The P6 form, issued by HMRC, serves as a notification of potential increases in taxable income. This document is essential for taxpayers to understand and respond to promptly to avoid penalties or interest charges. It contains information about your tax code, a combination of numbers and letters used by employers or clients to calculate tax deductions from earnings.


Issuance by HMRC

HMRC sends this form to notify individuals or entities, typically those registered for self-assessment or who have disclosed taxable income, about changes to their tax code or additional taxable income​​​​.


Detailed Analysis of the P6 Form


Content of the P6 Form

The form includes important details about the additional income such as its nature (e.g., rental, self-employment), amount, frequency, and any applicable tax codes or allowances.


How It Is Sent

HMRC dispatches the P6 form either through post or electronically via the recipient’s online account, especially if they are registered for self-assessment.


Impact on Taxpayers

The P6 form plays a vital role in determining your tax liabilities. Changes in your tax code, as indicated in the form, will affect the amount of tax you pay. For instance, an increase in personal allowance results in lower taxes and vice versa.


Responding to a P6 Form


Review and Verification

Upon receiving a P6 form, it's crucial to review the information for accuracy and compare it with your income records. If discrepancies are found, contacting HMRC or seeking professional advice is advisable.


Tax Code Corrections

If you believe your tax code on the P6 form is incorrect, you have the right to appeal or challenge it by contacting HMRC’s helpdesk or through your online account​​.


Importance of Timely Action

While no specific deadline is mentioned on the P6 form, addressing it promptly is crucial to avoid penalties or interest from HMRC. It acts as a reminder to disclose the income and ensure its accurate inclusion in tax calculations​​.


Employer and Self-Employed Implications

Employers receive the P6 form to update an employee's tax code in their payroll system. For self-employed individuals, clients who make tax-withheld payments may receive the P6 form to adjust tax withholdings accordingly.


Understanding the P6 form is vital for UK taxpayers. This form is a key indicator of changes in tax codes and potential increases in taxable income, requiring prompt and accurate response. Taxpayers, whether employees or self-employed, must review the form carefully, verify details, and take necessary actions to ensure compliance and accuracy in their tax obligations.



What is the Importance of P6 Form

The P6 form is an important document within the UK tax system for several reasons, particularly for employers, employees, and self-employed individuals. Its significance can be understood through various aspects:


  1. Notification of Tax Code Changes: The P6 form is issued by HM Revenue and Customs (HMRC) to inform employers or clients about changes in an individual's tax code. This information is crucial for accurately calculating the amount of tax to be deducted from an employee's salary or from payments to a self-employed individual.

  2. Ensuring Accurate Tax Deductions: The tax code provided on the P6 form determines how much tax an employer should withhold from an employee's pay. Accurate processing of this information is essential to ensure the correct tax amount is deducted, avoiding overpayment or underpayment of tax by the employee.

  3. Compliance with Tax Legislation: For employers, timely and accurate processing of the P6 form is vital for compliance with tax laws. Failure to update an employee's tax code in the payroll system as per the P6 form can lead to incorrect tax deductions, which can have legal and financial repercussions for both the employer and the employee.

  4. Impact on Employee Paychecks: Changes in tax codes, as indicated on the P6 form, directly impact the net amount an employee receives in their paycheck. Understanding these changes helps employees ensure they are not overpaying or underpaying taxes.

  5. Facilitates Tax Record Accuracy: For self-employed individuals, clients may receive a P6 form to adjust tax withholdings on payments. This ensures that tax records and payments are accurate for both the self-employed individual and their clients, aiding in smoother financial transactions and tax reporting.

  6. Helps in Tax Planning: Receiving a P6 form can serve as a prompt for taxpayers to review their tax situation. This is especially important for those with complex tax affairs, such as multiple income sources or fluctuating earnings, allowing them to plan for potential tax liabilities​​.

  7. Addresses Tax Discrepancies: The form provides an opportunity for taxpayers to rectify any discrepancies in their tax codes with HMRC, ensuring that their tax liabilities are calculated based on the most current and accurate information.


In summary, the P6 form plays a crucial role in the UK tax system by ensuring that tax codes are updated and applied correctly, thus facilitating accurate tax deductions, compliance with tax laws, and effective tax management for all parties involved.



What Should You Do If You Get P6 Form?

If you receive a P6 form, there are several steps you should take to ensure compliance with tax regulations and to maintain accurate tax records:


  1. Review the Form Carefully: Examine the details on the P6 form, especially the tax code and any noted changes in your taxable income. This information is crucial for understanding how much tax will be deducted from your earnings​​.

  2. Verify Against Your Records: Compare the information on the P6 form with your own income records. Ensure that the details about your income and tax code are accurate and reflect your current financial situation.

  3. Contact HMRC if Necessary: If you believe there are discrepancies or inaccuracies in the P6 form, contact HMRC promptly. You have the right to challenge or appeal the information on the form. HMRC can provide a revised tax code to your employer if required​​.

  4. Inform Your Employer: If you’re an employee, ensure your employer is aware of any changes in your tax code as indicated on the P6 form. This is important for them to deduct the correct amount of tax from your salary.

  5. Consult a Professional if Unsure: If you're uncertain about any aspect of the P6 form or its implications for your tax situation, consider seeking advice from a tax professional or accountant. They can provide guidance tailored to your specific circumstances​​.

  6. Keep the Form for Your Records: Store the P6 form in a safe place as part of your financial records. This document may be important for future reference, especially when preparing your tax return or resolving any tax-related queries.

  7. Act Promptly: Address the contents of the P6 form in a timely manner. Delaying can lead to complications, such as incorrect tax deductions, and may result in the need to pay additional taxes or receive a refund at a later date.

  8. Monitor Future Payslips: After the P6 form is processed, check your subsequent payslips to ensure that the new tax code has been applied correctly and that the tax deducted aligns with your expectations.


By following these steps, you can effectively manage the implications of receiving a P6 form, ensuring that your tax affairs are in order and compliant with UK tax regulations.



Navigating the P6 Form: Practical Implications for UK Taxpayers

In this section, we delve deeper into the practical aspects of handling the P6 form in the UK, focusing on its impact on employees, employers, and the self-employed. We will also address the relationship between the P6 and other tax documents, providing clarity on how they interplay in the UK tax system.


For Employees: Understanding the Impact of the P6 Form


Receiving the P6 Form

Employees typically do not receive the P6 form directly; instead, it is sent to their employers by HMRC whenever there is a change in the employee's tax code. The employer then uses the information from the P6 form to calculate the correct amount of tax to be deducted from the employee's pay.


Action Required

As an employee, it's important to ensure your employer has the correct tax code. If you believe the tax code on your payslip, influenced by the P6 form, is incorrect, you should contact HMRC to have it corrected​​.


For Employers: Managing the P6 Form


Receiving and Processing the P6 Form

Employers must update their payroll systems with the information from the P6 form to ensure accurate tax deductions in future payments. This is a critical step to comply with tax legislation and avoid issues with incorrect tax deductions.


Complexities in Processing

Employers need to pay careful attention, especially when handling the P6T form, which is issued in more complex tax situations like multiple jobs or pension sources. This requires a detailed review and update by HMRC​​.


Importance of Accurate Processing

Failure to update the employee's tax code promptly can result in incorrect tax deductions, leading to either overpayment or underpayment of taxes. Therefore, timely action upon receiving the P6 or P6T form is essential.


For the Self-Employed: Navigating the P6 Form


Implications of Receiving the P6 Form

For self-employed individuals, clients may receive the P6 form if they make payments subject to tax withholding. The clients then use this information to calculate the tax to be withheld from their payments.


Ensuring Accurate Tax Deductions

Self-employed individuals should communicate with their clients to ensure that tax withholdings are calculated correctly based on the information provided in the P6 form.


Relationship with Other Tax Documents


P6 vs P45

In most cases, a P6 will override a P45, which is provided by an employer when an employee leaves a job. The P6, being a direct communication from HMRC, is generally more up-to-date than a P45.


P6 and P6T Forms

While the P6 form is typically issued for individuals with a single source of income, the P6T form is used in more complex situations involving multiple jobs or pension sources. Both forms are integral to ensuring that the correct tax codes are applied​​.


For UK taxpayers, comprehending the implications of the P6 form is essential. This form, central to the tax system, requires careful consideration by employees, employers, and self-employed individuals alike. Ensuring the accurate application of tax codes as indicated in the P6 and P6T forms is crucial for maintaining compliance and achieving correct tax deductions.



Does a P45 Have Priority Over a P6?

In most cases, a P6 will override a P45. The P6 is issued by HMRC and is generally considered more up-to-date than a P45 form.

How Do I Get My P6?

HMRC will send you the P6 form if an employee's tax identification number/tax code changes during the fiscal year. The new tax code must be used from the first day of payment after receiving the notification.


If you are an employee, your employer will receive the P6 form from HMRC. HMRC sends the P6 form to your employer whenever there is a change to your tax code. Your employer will then use the information on the P6 form to calculate how much tax should be deducted from your pay.


If you are self-employed, your clients may receive the P6 form from HMRC. HMRC may send the P6 form to your clients if they make payments to you that are subject to tax withholding. Your clients will then use the information on the P6 form to calculate how much tax should be withheld from their payments to you.


How Does The P6 Form Affect Your Tax Payments?

The P6 form plays an important role in determining how much tax you will pay on your earnings. Your tax code, which is included in the P6 form, is used to calculate your tax liability.


If your tax code changes, it will affect the amount of tax you pay. For example, if your personal allowance increases, you will pay less tax on your earnings. On the other hand, if your personal allowance decreases, you will pay more tax on your earnings.


It's important to note that your employer or clients are responsible for deducting the correct amount of tax from your earnings based on your tax code. If your tax code is incorrect, you may end up paying too much or too little tax. In either case, you should contact HMRC to correct your tax code.

How Can I Fix My Incorrect Tax Code?

If you think your tax code is incorrect, please contact HMRC who will provide your employer with a revised tax code if necessary. This can be done by calling at 0300 200 3300.


How Can I Get My Tax Code Notice?

1) You can use the facility called Check your income tax for the current year in your Personal Tax Account. You can then explore your tax-free amount and have individual entries changed.


2) You can contact HMRC by phone or post using the contact

details on GOV.UK.


P6 HMRC Tax Code


When Will I Receive a P6 Notice from HMRC?

You will normally receive a notice from HMRC to let you know when a tax code has changed. This usually occurs when an employee's non-taxable income (personal allowance) increases or decreases, e.g. When the person rents a taxable benefit such as a company car.

When Do I Need a P6 Form?

HMRC will send you the P6 form if an employee's tax identification number/tax code changes during the fiscal year. The new code must be used from the first day of payment after receiving the notification.

When Does HMRC Change an Employee's Tax Code?

An employee's tax code may change during the tax year. You will normally receive a notice from HMRC to let you know when a tax code has changed. This is a P6 or P9 message.


Understanding the P6T Form in the UK

The P6T Form is a specific document used by HM Revenue and Customs (HMRC) within the UK's PAYE (Pay As You Earn) system. The PAYE system is how HMRC collects income tax and National Insurance Contributions directly from employment earnings. The P6T Form is categorized as a ‘PAYE Service’ generated notice of coding, which is issued to employers or pension providers. It details the tax code that should be applied to an individual's income, particularly in scenarios where there are multiple sources of income or adjustments needed to their tax code during the tax year.


Function of the P6T Form

The primary purpose of the P6T Form is to inform employers or pension providers about the tax code that needs to be used for an individual. This form is typically generated when there are updates to an individual's tax situation that necessitate adjustments in the tax code. These updates can be due to various reasons such as changes in personal allowance, additional sources of income, or receipt of taxable benefits. The form ensures that employers apply the correct tax code to the individual's earnings, which is critical for maintaining accurate tax records and deductions.


P6 vs. P6T: The Key Differences

While both forms are related to the tax codes used in the PAYE system, there are differences between the P6 and P6T Forms:


Issuance and Purpose

  • P6 Form: This is a PAYE coding notice that HMRC sends to employers. It contains details of changes to an employee's tax code, including previous pay and tax deducted within the tax year. Employers are supposed to update their payroll systems with the information from the P6 Form to ensure that the right amount of tax is deducted in future payments.

  • P6T Form: As mentioned earlier, this form is a 'PAYE Service' generated notice of coding issued for more specific circumstances. It is used when the system automatically generates a need to update an employer about changes in an employee's tax code.

Trigger for Issuance

  • P6 Form: It is usually issued when an individual has one source of income, and there is a change in their tax code due to various factors such as a new job, a change in benefits, or an update in personal allowance.

  • P6T Form: It is generally issued in response to more complex changes, such as when an individual has multiple jobs or pension sources, and their tax situation requires a more detailed review and update by HMRC.


Employer's Responsibility

Both forms require the employer to take action. However, the P6T may require more attention due to the complexity of the changes in tax codes it may present. Employers need to ensure they understand the instructions on both forms to apply the correct tax codes and avoid any issues with incorrect tax deductions.


The Importance of Accurate Processing

The accurate processing of both P6 and P6T Forms is crucial. Failure to update the employee's tax code in the payroll system promptly can result in incorrect tax deductions, which could either lead to an employee overpaying tax (and needing a refund from HMRC) or underpaying tax (which would need to be repaid to HMRC). This is why it is essential for employers to act swiftly upon receiving either form.



Both the P6 and P6T Forms are integral to the UK's tax system, ensuring that tax codes are updated and applied correctly to employees' earnings. Understanding the differences between these forms is key for employers to manage payroll effectively. It is the employers' responsibility to ensure that the tax codes provided by HMRC via these forms are implemented in their payroll systems without delay, guaranteeing compliance with tax legislation and the accurate deduction of taxes. The P6T Form, in particular, plays a significant role when there are complex changes to an individual's tax situation, requiring careful attention from the employer to handle these updates properly.


The Role of a Tax Accountant in Managing the P6 Form

Navigating the intricacies of tax forms and regulations can be a daunting task for many taxpayers. This is where the expertise of a tax accountant becomes invaluable, especially when dealing with the P6 form in the UK. In this article, we explore the various ways a tax accountant can assist you with the P6 form, ensuring compliance, accuracy, and efficiency in your tax affairs.


Understanding the P6 Form

Before delving into the specifics of how a tax accountant can assist, it's essential to understand what the P6 form is. The P6 form, issued by HM Revenue and Customs (HMRC), notifies taxpayers of changes to their tax code and potentially increased taxable income. This form plays a crucial role in determining how much tax is deducted from an individual’s earnings​​​.


Expertise in Tax Code Interpretation


  1. Deciphering the Tax Code: Tax accountants are adept at interpreting the complexities of tax codes. They can explain the significance of the codes on the P6 form and how they impact your tax liabilities, ensuring you understand the changes and their implications​.

  2. Verifying Accuracy: A tax accountant can cross-check the information on your P6 form against your financial records. This helps in identifying any discrepancies or errors that might lead to incorrect tax calculations​.


Assisting with Discrepancies and Disputes


  1. Addressing Errors: If there are inaccuracies on the P6 form, a tax accountant can guide you through the process of rectifying them with HMRC. They can assist in gathering necessary documentation and effectively communicating your case to the tax authorities​.

  2. Handling Appeals and Challenges: In cases where you need to challenge or appeal the tax code or income details on the P6 form, a tax accountant provides invaluable assistance. They understand the procedures and can represent your interests effectively, ensuring a fair resolution​.


Ensuring Compliance and Avoiding Penalties


  1. Advising on Compliance: Tax accountants are well-versed in tax laws and regulations. They can advise you on the necessary actions to take in response to the P6 form, ensuring that you remain compliant with HMRC’s requirements​.

  2. Avoiding Financial Repercussions: Incorrect handling of the P6 form can lead to financial penalties or interest charges. A tax accountant helps in mitigating these risks by ensuring timely and accurate responses to the form​​​.


Facilitating Communication with HMRC


  1. Professional Liaison: Dealing with HMRC can be intimidating and confusing for many taxpayers. A tax accountant can act as a liaison, handling communications and negotiations with HMRC on your behalf. This can be particularly helpful in complex tax situations or disputes​.

  2. Submitting Adjustments and Requests: If adjustments to your tax code are necessary, a tax accountant can manage the submission of these requests to HMRC, ensuring that all changes are correctly reflected and processed​.


Strategic Tax Planning


  1. Future Tax Planning: Beyond addressing immediate concerns with the P6 form, a tax accountant can provide strategic advice for future tax planning. This includes optimizing your tax position and planning for potential changes in your income or tax situation​​​.

  2. Personalized Advice: Every taxpayer’s situation is unique. A tax accountant offers personalized advice tailored to your specific financial circumstances, helping you make informed decisions regarding your taxes and the implications of the P6 form​.


A tax accountant plays a pivotal role in managing the complexities of the P6 form. Their expertise in tax code interpretation, handling discrepancies, ensuring compliance, facilitating communication with HMRC, and strategic tax planning makes them an invaluable resource. By engaging a tax accountant, you can navigate the challenges of the P6 form with confidence, ensuring accuracy, compliance, and optimized tax handling in your financial affairs.




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