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What is HMRC Form TC689 in the UK?

Updated: Apr 22

Introduction to HMRC Form TC689

HMRC Form TC689 is a crucial document for UK taxpayers seeking to appoint an intermediary to manage their tax credits and Child Benefit claims. Understanding the form's purpose, the process of completing and submitting it, and its recent updates is essential for anyone involved in tax management for themselves or others.

What is HMRC Form TC689 in the UK

Purpose of Form TC689

The primary function of Form TC689 is to authorize an intermediary to handle your tax credits and Child Benefit matters. An intermediary can be a trusted third party like a family member or an organization such as Citizens Advice, but not a paid professional like an accountant. This authorization allows the intermediary to make necessary updates and changes to your claims, such as modifying your address or bank details.

Completing and Submitting the Form

Form TC689 is available in both an online format and a downloadable PDF. To complete the form, you must provide all required information before you can submit it; it’s important to gather all relevant details ahead of time. Once completed, the form can be submitted electronically by registered intermediaries or sent via post if using the PDF version. The form is designed with mandatory fields to ensure that all necessary information is provided, which helps streamline the processing time.

Recent Updates and Electronic Submission

As of recent updates, intermediaries registered with HMRC can submit TC689 forms electronically, a process that has been enhanced to facilitate quicker responses and processing. The electronic form, referred to as KANA 689, must be fully completed before submission, and it integrates authorizations directly into relevant Child Benefit records. This electronic option is intended to eventually replace the need for fax submissions, making the process more efficient.

HMRC Form TC689 is an essential tool for individuals who need to authorize someone else to manage their tax credits and Child Benefit affairs efficiently. With options for both electronic and paper submissions, it caters to different needs and ensures that intermediaries can act effectively.

Key Features and Functionality of HMRC Form TC689

HMRC Form TC689 is designed to streamline the process by which UK residents can authorize intermediaries to handle their tax credits and Child Benefit claims. This form is a vital component for those needing assistance with their tax affairs but unable to manage them independently or preferring third-party assistance. The purpose, submission process, and its implications on tax management are detailed below, providing a comprehensive understanding essential for UK taxpayers.

Purpose and Utilization of Form TC689

HMRC Form TC689 is specifically used to authorize a third party, referred to as an 'intermediary', to manage tax credits and Child Benefit on behalf of another person. This form is pivotal in situations where the actual taxpayer is unable to manage their tax affairs directly due to various reasons such as disability, lack of expertise, or access issues. Importantly, it should be noted that this form is not intended for authorizing paid professionals like accountants. Instead, it is meant for non-professional intermediaries, including family members or advisors from nonprofit organizations such as Citizens Advice.

Completing and Submitting the Form

To complete Form TC689, applicants must provide detailed information that allows HMRC to identify both the taxpayer and the authorized intermediary correctly. This includes personal details, tax credit and Child Benefit information, and specific authorizations granted to the intermediary. The form can be accessed and submitted in two main ways: online and via post. The online method is more streamlined, allowing registered intermediaries to submit forms directly through HMRC's digital platforms. Conversely, the paper-based form must be filled out, printed, and mailed to HMRC's designated office address.

Electronic Submissions and Updates

The introduction of electronic submission for TC689 forms has significantly improved the efficiency of the authorization process. Registered intermediaries, who have an office ID number with HMRC, can submit these forms electronically, ensuring faster processing and reducing the reliance on traditional mail. This electronic system, known as KANA 689, is designed to ensure that all mandatory fields are completed, thus speeding up the processing time and reducing errors. Furthermore, the electronic system updates the Child Benefit records appropriately, ensuring that all data is current and accurately reflects any changes made through the intermediary​.

Key Considerations for Using Form TC689

When using HMRC Form TC689, several important considerations must be kept in mind to ensure that the process goes smoothly and effectively:

  1. Choose the Right Intermediary: Since the form does not accommodate professional paid agents, selecting a trusted individual or a recognized organization to act as an intermediary is crucial.

  2. Complete Information Required: Incomplete forms can delay processing. Ensuring that all required sections are filled out completely and accurately is essential.

  3. Regular Updates and Renewals: The authorization provided through TC689 is typically valid for one year unless otherwise specified. It is important for both the taxpayer and the intermediary to keep track of this period and renew the authorization as needed.

Understanding and effectively utilizing HMRC Form TC689 is essential for taxpayers who require assistance in managing their tax credits and Child Benefit claims. With the option for both paper and electronic submissions, the process has been made more accessible and efficient, particularly with the latest updates allowing for online submissions by registered intermediaries. By following the guidelines and considerations outlined, taxpayers can ensure that their tax affairs are managed correctly and efficiently, with minimal hassle.

Impact and Implications of HMRC Form TC689 for UK Taxpayers

Simplifying Tax Management through Intermediaries

The existence and functionality of HMRC Form TC689 significantly simplify tax management for UK taxpayers, especially for those who find it challenging to handle their tax affairs due to various reasons such as disabilities, lack of time, or complexity of their financial situation. By allowing taxpayers to authorize intermediaries to act on their behalf, the form ensures continuity and accuracy in managing tax credits and Child Benefit claims.

Security and Compliance

Using Form TC689 also introduces a layer of security and compliance to the tax handling process. The form mandates detailed verification of both the taxpayer and the intermediary, which helps prevent fraudulent activities. Moreover, by clearly delineating the roles and responsibilities of the intermediary, the form ensures that all actions taken are within the bounds of legal and tax compliance. It’s crucial, however, for both parties to understand that the intermediary's power should be used responsibly and within the limits set by the authorization​.

Operational Efficiency

The adoption of electronic submissions for TC689 forms has notably enhanced operational efficiency for HMRC and intermediaries alike. Faster processing times, reduced paperwork, and immediate updating of records are some of the benefits brought by the digital handling of these forms. The transition to online forms also aligns with the broader digital transformation goals of HMRC, aiming to make tax administration more efficient and accessible to all taxpayers​.

Challenges and Considerations

While Form TC689 offers numerous benefits, there are also challenges and considerations that need attention:

  1. Digital Divide: Not all taxpayers may have access to digital tools or the internet. This disparity can hinder the ability of some to utilize the electronic submission process, potentially necessitating continued availability of paper forms and postal submission options.

  2. Understanding Limitations: Taxpayers and intermediaries must clearly understand the limitations and responsibilities entailed in using Form TC689. There is a risk of misuse if the intermediary does not adhere strictly to the authorized actions or if the taxpayer does not effectively monitor the intermediary's activities.

  3. Privacy and Data Security: Handling sensitive personal and financial information online or through third parties increases the risk of data breaches. Both HMRC and intermediaries must ensure robust data security measures are in place to protect taxpayer information from unauthorized access or leaks.

HMRC Form TC689 plays a pivotal role in enabling efficient, secure, and compliant tax management for UK taxpayers, particularly those who need assistance in handling their affairs. By leveraging digital tools for submission and processing, the form also contributes to the modernization of tax administration in the UK. However, taxpayers must remain vigilant about the capabilities and limitations of their chosen intermediaries, ensuring that their tax affairs are managed transparently and responsibly. This understanding will help in maximizing the benefits while mitigating potential risks associated with using Form TC689.

Broader Impact of HMRC Form TC689 on UK Tax Policy and Practice

Enhancing Accessibility and Inclusivity

HMRC Form TC689 is a testament to the UK government's commitment to making tax management more accessible and inclusive. By enabling taxpayers to appoint intermediaries, the form addresses the needs of those who might otherwise struggle with the complexities of tax compliance due to barriers such as disability, lack of literacy in financial matters, or language. This approach not only supports individual taxpayers but also strengthens the integrity of the tax system by ensuring that all individuals, regardless of their personal circumstances, can manage their tax obligations effectively and on time.

Facilitating Trust and Confidence in the Tax System

The ability to legally authorize someone else to handle one’s tax affairs through Form TC689 builds trust between taxpayers and the tax authority. It acknowledges that taxpayers may have legitimate reasons requiring them to rely on others for managing their financial responsibilities. By formalizing this process, HMRC enhances transparency and reduces the potential for misunderstandings or fraudulent activities. This trust is crucial for the effective functioning of any tax system, as it encourages timely and accurate reporting of tax information.

Impact on Tax Compliance and Collection

The use of intermediaries through Form TC689 has significant implications for tax compliance and collection. By ensuring that taxpayers can seek help when needed, HMRC likely increases compliance rates, as more taxpayers are able to fulfill their obligations correctly and on time. Increased compliance enhances the efficiency of tax collection and reduces the burden on enforcement activities. It's a win-win for both taxpayers and the tax authority, facilitating smoother operations and reducing the need for corrective actions such as audits or penalties.

Challenges in the Digital Era

Despite its advantages, the digital shift in managing tax affairs, including the use of Form TC689, presents challenges:

  1. Cybersecurity Risks: As more tax operations move online, the risk of cybersecurity threats grows. Ensuring the security of personal and financial information becomes paramount. HMRC must continually update and secure its systems against these threats to protect taxpayer data from unauthorized access or breaches.

  2. Digital Literacy: Not all taxpayers are comfortable or familiar with digital tools. This digital divide can lead to disparities in who benefits from the conveniences of online tax management. It's important for HMRC to provide alternative methods or support to those who are not digitally savvy.

  3. Adaptation to Changing Technologies: As technology evolves, so too must the tools and platforms used by HMRC. This constant need for updates requires ongoing investment and training, ensuring that the systems are not only secure but also user-friendly and accessible to all segments of the population.

Form TC689 is more than just a form; it's a reflection of broader shifts in tax administration towards greater inclusivity, efficiency, and digital engagement. While it brings numerous benefits, it also requires careful management of challenges inherent in digital transformation. As UK taxpayers increasingly move towards digital solutions, HMRC's role in guiding, protecting, and supporting taxpayers through these changes becomes even more crucial. The successful implementation and management of tools like Form TC689 will significantly influence the overall effectiveness and fairness of the UK tax system.

How to Fill Form TC689 - A Step by Step Guide

How to Fill Form TC689 - A Step by Step Guide

Filling out HMRC Form TC689 is essential for UK taxpayers who wish to appoint an intermediary to handle their tax credits and Child Benefit. Here is a detailed guide on how to complete this form correctly:

Step 1: Understand Eligibility

Only use Form TC689 if you want an intermediary like a relative or a non-profit organization such as Citizens Advice to handle your tax matters. This form is not for authorizing paid professionals like accountants. Both applicants must fill out and sign the form if it's a joint tax credits claim.

Step 2: Provide Your Details

  • Title, First, Middle, and Last Name: Enter your full name as registered with HMRC.

  • Address and Postcode: Provide your current residence address.

  • Date of Birth: Fill in your date of birth in the day, month, year format.

  • National Insurance Number: This is optional but helpful for quicker processing.

Step 3: Add Your Partner’s Details (if applicable)

If you are making a joint claim, you must also provide your partner's full name, address, date of birth, and National Insurance number, similar to your own details.

Step 4: Intermediary’s Details

  • Name and Address: Include the full name and address of the intermediary.

  • Phone Number: Provide a contact number for ease of communication.

  • Relationship to You: Specify the intermediary's relationship to you (e.g., friend, relative, or third-party organization). If it's an organization, include the organization's name and reference number.

Step 5: Specify the Type of Authority

Indicate whether the intermediary is to handle Child Tax Credit, Working Tax Credit, Child Benefit, or Guardian’s Allowance. Tick the appropriate box to specify which claims the authority applies to.

Step 6: Signing the Form

Both you and your partner (if applicable) need to sign the form to validate it. Note that HMRC does not accept scanned or photocopied signatures.

Step 7: Submit the Form

Once completed, mail the form to the address specified in the form instructions, which is usually:

Tax Credits Office

IAA Team



Suggesting Answers to Common Questions

  1. Who should use Form TC689? A person who needs an intermediary like a family member or a charity to manage their tax credits or Child Benefit. It is not for use with professional paid agents.

  2. Where do I send the completed Form TC689? Send it to the Tax Credits Office at HMRC, BX9 1ER.

  3. Do both partners need to sign the form? Yes, for joint claims, both partners must fill in their details and sign the form.

  4. How long is the authorization valid? The authority is valid for 12 months from the date of signing unless a different end date is specified on the form.

How Can a Personal Tax Accountant Help You with Child Benefit Claims

How Can a Personal Tax Accountant Help You with Child Benefit Claims

Navigating the complexities of Child Benefit claims in the UK can be daunting for many parents and guardians. A personal tax accountant plays a crucial role in this process, providing expertise and support to ensure that families receive the benefits they are entitled to while complying with the tax laws. This comprehensive guide explores the multifaceted ways in which a personal tax accountant can assist with Child Benefit claims.

Understanding Child Benefit

Child Benefit is a government payment available to parents and guardians of children under 16 (or under 20 if they are in education or training). It’s designed to help families with the costs of raising children. The amount received and the claim process can be influenced by various factors, including the claimant's income and the number of children.

How a Personal Tax Accountant Can Assist

  1. Initial Assessment and Eligibility: A tax accountant can begin by assessing your eligibility for Child Benefit. This includes understanding your family structure, income levels, and other entitlements that might affect your claim. They can provide detailed advice on how changes in your circumstances can affect your benefits.

  2. Application Process: Navigating the Child Benefit application process can be complicated. A tax accountant can help fill out the necessary forms accurately, ensuring all the required documentation is complete. This reduces the likelihood of delays or rejections due to errors or omissions.

  3. Dealing with High Income Child Benefit Charge (HICBC): Families where one parent earns over £50,000 are subject to the High Income Child Benefit Charge, which can claw back some of the benefit through tax. A tax accountant can offer strategies to mitigate this charge, such as recommending pension contributions or other allowable expenses that reduce taxable income.

  4. Tax Planning and Efficiency: A personal tax accountant can provide strategies to maximize your overall tax efficiency, incorporating your Child Benefit into broader financial planning. This might include advice on savings and investments that are tax-efficient and align with your family's financial goals.

  5. Handling Changes and Compliance: Any changes in your family situation, such as a new child, a change in income, or a change in your child’s education status, can affect your Child Benefit. A tax accountant ensures that such changes are promptly and accurately reported to HMRC, maintaining compliance and ensuring you receive the correct benefit amount.

  6. Disputes and Appeals: If there are discrepancies or disputes with HMRC regarding your Child Benefit, a tax accountant can act as your representative. They can handle communications, compile the necessary documentation, and guide you through the appeals process if needed.

  7. Future Planning: For families planning future expansions or those with changing financial landscapes, a tax accountant can forecast potential impacts on Child Benefit entitlements. This proactive approach ensures that families are not caught off-guard by unexpected tax implications or benefit adjustments.

  8. Education on Regulations: Tax laws and benefit regulations frequently change. A tax accountant keeps up-to-date with the latest rules and regulations regarding Child Benefit and informs you of any changes that might affect your claims.

Additional Benefits of Hiring a Personal Tax Accountant

  • Saving Time and Stress: Dealing with government paperwork and compliance can be time-consuming and stressful. A personal tax accountant takes over these tasks, allowing you to focus more on your family and less on bureaucratic processes.

  • Professional Representation: Having a professional represent your interests with HMRC can be invaluable, especially if there are complications or disputes. This representation ensures that your case is handled effectively and with the required expertise.

  • Holistic Financial Advice: Beyond Child Benefit, tax accountants can integrate advice on other aspects of personal finance, including other benefits, tax liabilities, and financial planning, creating a comprehensive financial strategy for your family.

A personal tax accountant offers essential services that extend beyond mere tax preparation, particularly in managing Child Benefit claims. By leveraging their expertise, families in the UK can navigate the complexities of Child Benefit efficiently, ensuring they maximize their entitlements while remaining compliant with tax laws. This level of professional support not only provides financial benefits but also peace of mind, knowing that all aspects of your family's financial dealings with HMRC are in capable hands.


Q1: Can HMRC Form TC689 be used for any tax-related authorization apart from Child Benefit and tax credits?

A1: No, HMRC Form TC689 is specifically designed for authorizing an intermediary to handle matters related to tax credits and Child Benefit only. It cannot be used for other tax-related authorizations.

Q2: What should I do if I no longer require the intermediary services authorized by Form TC689?

A2: If you no longer require the services of your intermediary, you should notify HMRC in writing to cancel the authorization. This will ensure that the intermediary can no longer access or manage your tax credits and Child Benefit information.

Q3: Is there a fee associated with filing Form TC689?

A3: No, there is no fee charged by HMRC for processing Form TC689. The form is provided as a free service to allow taxpayers to authorize an intermediary to manage their Child Benefit and tax credits.

Q4: How long does it take for HMRC to process Form TC689 once submitted?

A4: The processing time for Form TC689 can vary, but typically, HMRC aims to handle the form within a few weeks of receipt. However, during peak times, such as tax season, processing may take longer.

Q5: Can I submit HMRC Form TC689 electronically through the HMRC website?

A5: As of the latest updates, Form TC689 must be printed and sent through postal mail to HMRC. Electronic submissions are not currently supported for this specific form.

Q6: What happens if I make a mistake on Form TC689 after it has already been submitted?

A6: If you realize that there is a mistake on a submitted Form TC689, you should contact HMRC directly to explain the error. You may need to fill out a new form with the correct information and resubmit it.

Q7: Can Form TC689 be used by businesses to authorize an agent?

A7: No, Form TC689 is intended for individual use only. Businesses needing to authorize an agent for tax purposes should use Form 64-8, which is specifically designed for business authorizations.

Q8: What specific information about the intermediary do I need to include on Form TC689?

A8: You need to provide the intermediary’s full name, address, phone number, and the nature of their relationship to you (e.g., friend, relative, or organization). If the intermediary represents an organization, include the organization's name and reference number if applicable.

Q9: Can more than one intermediary be authorized on a single Form TC689?

A9: No, each Form TC689 can only be used to authorize one intermediary. If you need to authorize additional intermediaries, you must complete and submit separate forms for each one.

Q10: How do I obtain a copy of Form TC689?

A10: You can download and print a copy of Form TC689 from the HMRC website. Alternatively, you can contact HMRC to request a paper copy to be sent to your address.

Q11: Can I authorize an intermediary for a specific period less than the standard 12 months?

A11: Yes, you can specify a different period by entering an end date in the relevant section of Form TC689. This allows you to limit the authorization to a shorter duration if necessary.

Q12: What if my intermediary changes their address or contact details after I have submitted Form TC689?

A12: You should inform HMRC of any changes in your intermediary’s contact details to ensure that all communications are correctly directed. You may need to submit a new Form TC689 with the updated information.

Q13: Is the intermediary required to sign Form TC689?

A13: No, the intermediary does not sign Form TC689. Only the person requesting the authorization (and their partner, if it is a joint claim) needs to sign the form.

Q14: How will I know when my Form TC689 has been processed?

A14: HMRC does not typically send a confirmation for processed forms. However, you can contact HMRC directly to confirm that your form has been processed and the authorization is in effect.

Q15: What documentation should I keep after submitting Form TC689?

A15: You should keep a copy of the completed Form TC689 for your records. It’s also advisable to note the date you sent the form and any correspondence from HMRC regarding the authorization.

Q16: Can Form TC689 be used to authorize an intermediary for someone who is not competent to manage their financial affairs?

A16: Yes, Form TC689 can be used to authorize an intermediary to act on behalf of someone who is unable not competent to manage their financial affairs, such as in cases of disability or mental incapacity. The form allows for someone else, like a family member or a charity, to manage these responsibilities.

Q17: Does HMRC require any proof of relationship between the intermediary and the applicant when submitting Form TC689?

A17: While HMRC does not typically require proof of relationship for Form TC689 submissions, it's important to provide accurate information about the relationship on the form. In cases where the relationship or authorization is questioned, HMRC may request additional documentation or verification.

Q18: Can I use Form TC689 to authorize an intermediary for both Child Benefit and tax credits simultaneously?

A18: Yes, Form TC689 allows you to authorize an intermediary for both Child Benefit and tax credits simultaneously. You must specify this on the form by ticking the appropriate boxes that indicate which benefits the authorization covers.

Q19: What should I do if I accidentally authorize the wrong person on Form TC689?

A19: If you accidentally authorize the wrong person on Form TC689, you should immediately contact HMRC to notify them of the mistake and submit a revised form with the correct intermediary's details.

Q20: Are there any restrictions on who can be appointed as an intermediary via Form TC689?

A20: Yes, the intermediary appointed via Form TC689 cannot be a paid professional, such as an accountant or tax advisor, acting in a professional capacity. The form is intended for non-professional intermediaries, such as family members, friends, or volunteers from authorized organizations.

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