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EIN guide for Amazon KDP authors based in the United Kingdom
EIN15 min read

EIN for Amazon KDP authors from the United Kingdom

Amazon KDP authors in the UK need an EIN for U.S. tax compliance. Learn the process, required documents, and common pitfalls specific to your publishing business.

Reviewed by , ITIN Specialist at itin.net.

UK Amazon KDP Authors Face Unique EIN Challenges

Amazon KDP authors based in the United Kingdom often encounter specific hurdles when applying for an Employer Identification Number (EIN). Unlike U.S. residents who can apply online, non-residents without a Social Security Number (SSN) or Individual Taxpayer Identification Number (ITIN) face a more complex process. The primary friction point arises when attempting to file U.S. taxes or open a U.S. business bank account, both of which may require an EIN. For authors publishing through Amazon KDP, understanding these requirements is essential for tax compliance and efficient business operations. The U.S. Internal Revenue Service (IRS) issues EINs, which are nine-digit federal tax identification numbers used to identify business entities. While primarily for U.S. businesses, non-residents engaging in U.S. commerce, such as selling books on Amazon's U.S. platform, may need one. The distinction is critical because the application process and required documentation differ significantly for those without a U.S. tax identification number. This article clarifies the EIN application process for UK-based Amazon KDP authors, focusing on their specific circumstances and potential pitfalls.

When you earn royalties from U.S. sales, Amazon is required to withhold U.S. taxes. Without proper documentation like a W-8BEN form and potentially an EIN, this withholding rate can be as high as 30%. While a W-8BEN form is typically sufficient to claim treaty benefits and reduce withholding on royalties, some authors may find an EIN simplifies other aspects of their U.S. business dealings, especially if they plan to expand their services or engage in other U.S.-based commerce. The IRS Form SS-4 is the application for an EIN, and its correct completion is paramount. For non-residents, the standard online application is not an option, necessitating alternative submission methods. Understanding these nuances is the first step for any Amazon KDP author in the United Kingdom looking to establish their U.S. business presence effectively.

When You Need an EIN as a UK-Based Amazon KDP Author

An EIN is not always mandatory for UK-based Amazon KDP authors, but it becomes necessary in specific scenarios. The most common trigger is the requirement to open a U.S. business bank account. Many banks, including online providers popular with remote businesses like Mercury, Relay, or Brex, require an EIN to open an account for non-U.S. residents. This is because the EIN serves as the primary identifier for your business entity in the U.S. financial system. Without it, you may be unable to manage your U.S. royalty income effectively or separate business finances from personal ones. While a U.S. LLC can simplify some aspects of U.S. business, it is not a prerequisite for obtaining an EIN as a non-resident. The IRS does not require you to have a U.S. business structure like a U.S. LLC to apply for an EIN if you are conducting business in the U.S. and need one for specific purposes. The need for an EIN also arises if you plan to hire U.S. employees or establish a U.S. branch of your publishing business, though this is less common for typical KDP authors. For royalty income alone, a properly completed W-8BEN form is usually sufficient to reduce U.S. withholding tax under the U.S.-UK tax treaty. However, if you are structuring your publishing activities as a formal business entity, or if Amazon or a bank explicitly requests it, securing an EIN is the logical next step. Confirming the exact requirements with Amazon KDP's terms of service or your chosen banking partner is advisable. If you're considering forming a U.S. LLC, an EIN is a prerequisite for that process as well. The IRS Form SS-4 is the official application for this number.

Required Documents for Your EIN Application

Applying for an EIN as a non-resident requires specific documentation, primarily focused on verifying your identity and your business's legitimacy. The most critical document for the responsible party is a valid passport. This serves as primary identification, proving who you are and your connection to the business. Additionally, you will need documentation related to your business formation if you have established one, such as articles of incorporation or organization, or an operating agreement. Even if you haven't formally set up a U.S. LLC, you will need to provide details about the nature of your U.S. business activities – in this case, publishing and selling books via Amazon KDP. The IRS Form SS-4 requires information about your business, including its name, address, and the type of entity. For non-residents applying without an SSN, line 7b of Form SS-4 is crucial; you must write 'Foreign' in this field, not leave it blank or enter an incorrect number. If you have a U.S. business address, even a mail forwarding service, this should be provided. The IRS uses this information to issue the EIN and maintain tax records. Ensure all names and addresses are consistent across all submitted documents to avoid processing delays. Keep copies of all submitted forms and supporting documents for your records. The IRS may request additional information depending on the specifics of your application. The process for non-residents is more involved than for U.S. citizens, emphasizing the need for accurate documentation.

The EIN Application Process for UK Residents

The process for obtaining an EIN as a non-resident, including Amazon KDP authors from the United Kingdom, differs significantly from the streamlined online application available to U.S. residents. Since you likely do not have an SSN or ITIN, you cannot use the IRS online portal. Instead, you must submit Form SS-4, the Application for Employer Identification Number, via fax or mail. This method typically results in a longer processing time. After completing Form SS-4, you will fax it to the IRS at 855-641-4671 (for international applicants). You can also mail it to the IRS, though this is generally the slowest option. Once the IRS receives and processes your application, they will mail your EIN confirmation letter, often referred to as CP 575, to the address listed on your Form SS-4. This process can take several weeks. For non-residents, the IRS estimates a processing time of 4–5 weeks for applications submitted via fax or mail. Expedited processing is not generally available through these channels. The IRS will assign your EIN once they have verified your application. It is important to accurately fill out every section of Form SS-4, especially line 7b, where you must indicate 'Foreign' if you do not have an SSN or ITIN. Incorrectly completing this section is a common reason for application rejection. The IRS will not process an application if line 7b is left blank or if an incorrect number is provided. Once you receive your EIN confirmation, you can proceed with opening a U.S. bank account or fulfilling other requirements that necessitated the EIN. The itin.net service can assist with this process through its Certified Acceptance Agent program.

Common EIN Mistakes for UK Amazon KDP Authors

Amazon KDP authors based in the United Kingdom often make specific errors when applying for an EIN, largely due to the non-resident application process and unfamiliarity with U.S. tax forms. A frequent mistake is incorrectly completing line 7b of Form SS-4. This line asks for the SSN or ITIN of the responsible party. If you do not have either, you must write the word 'Foreign' in this box. Leaving it blank or entering an incorrect number will cause your application to be rejected. Another common pitfall is misunderstanding the entity type. While many authors might think of their publishing activity as a sole proprietorship, the IRS classifies non-residents applying for an EIN without an SSN as 'Other' for entity type on Form SS-4, unless they have formed a specific U.S. business structure. Choosing the wrong entity type can lead to confusion and processing delays. Furthermore, some authors attempt to apply online, assuming the process is the same for everyone. However, the IRS online EIN application is only available to individuals with a valid SSN or ITIN. Attempting to use it without one will result in an error message or application failure. Ensure your mailing address on Form SS-4 is a reliable address where you can receive mail from the IRS, as this is where your EIN confirmation letter will be sent. If you have a U.S. mailing address or use a mail forwarding service, this can be used. Double-checking all details against your passport and any other official documents is crucial to prevent errors. Many authors also overlook the need for an EIN when setting up a U.S. bank account, only realizing the requirement when their chosen bank rejects their application. Understanding these common errors beforehand can save significant time and frustration.

The Certified Acceptance Agent (CAA) Advantage

For non-residents applying for an EIN, the traditional fax or mail method can be slow and prone to errors. This is where the role of a Certified Acceptance Agent (CAA) becomes invaluable. A CAA is an individual or entity appointed by the IRS to assist applicants in obtaining an EIN. As a designated CAA, itin.net can streamline the process significantly for Amazon KDP authors in the United Kingdom. When you apply through a CAA like itin.net, we act as your intermediary with the IRS. We help you complete Form SS-4 accurately, ensuring all details are correct and that potential pitfalls are avoided. Critically, CAAs can often obtain an EIN for you much faster than the standard mail or fax routes. While the IRS still handles the final issuance, the CAA process typically reduces the turnaround time considerably. The most significant benefit is the direct communication channel and verification process that a CAA provides. We ensure your application meets IRS standards before submission, reducing the likelihood of rejection. This is particularly helpful for non-residents who may not be familiar with U.S. tax procedures or documentation requirements. By using a CAA, you bypass the lengthy waiting periods associated with mail or fax submissions and gain a higher degree of certainty regarding your application's accuracy. This expedited and verified process is why many international clients choose to work with a CAA for their EIN applications. itin.net's expertise in handling non-resident applications makes it a reliable choice for UK-based authors needing an EIN.

Next Steps After Obtaining Your EIN

Once you have successfully obtained your EIN, you can proceed with the next steps for managing your U.S. publishing business. The most immediate action for many is to open a U.S. business bank account. With your EIN and supporting documentation (like your passport and business formation documents, if applicable), you can now apply to banks like Mercury, Relay, or Brex. This account will allow you to receive royalty payments efficiently and manage your business finances separately. Ensure you understand the specific requirements of each bank, as they can vary. If you have formed a U.S. LLC, you will also need to ensure compliance with state-specific requirements, such as annual reports and franchise taxes. For Amazon KDP authors, the EIN may also be relevant for future tax filings, particularly if you establish a more formal business structure or have significant U.S. income that requires reporting on a U.S. tax return (such as Form 1040-NR). You might also need to file Form 5472 annually if you are operating through a U.S. LLC and are considered a foreign-owned disregarded entity, reporting certain transactions with the foreign owner. Understanding these ongoing compliance obligations is essential. Review the pricing for itin.net's EIN services to see how we can assist you in obtaining your number efficiently. If you have specific questions or require personalized assistance, contacting itin.net directly is the best course of action to ensure accurate and timely application processing.

Practical tips

  • Use the same legal name on Form SS-4 as it appears on your passport and any other official identification documents to prevent discrepancies.
  • On Form SS-4, line 7b, clearly write 'Foreign' if you do not possess a U.S. Social Security Number (SSN) or Individual Taxpayer Identification Number (ITIN).
  • If you are applying without a formal U.S. business entity, select 'Other' for the entity type on Form SS-4 and describe your business activity as 'Publishing and E-commerce'.
  • Ensure the mailing address provided on Form SS-4 is a reliable physical address where you can receive official IRS correspondence, such as your U.S. mail forwarding service or business address.
  • If you plan to open a U.S. bank account, confirm the specific EIN and documentation requirements with your chosen bank before applying for the EIN to avoid redundant applications.

Frequently asked questions

Do I need an EIN to publish on Amazon KDP as a UK author?

Generally, you do not need an EIN solely to publish on Amazon KDP. A completed W-8BEN form is usually sufficient to ensure the correct U.S. tax withholding rate on your royalties, often 0% under the U.S.-UK tax treaty. However, an EIN becomes necessary if you plan to open a U.S. business bank account, which is highly recommended for managing royalty income.

Can I apply for an EIN online from the UK?

No, if you do not have a U.S. Social Security Number (SSN) or Individual Taxpayer Identification Number (ITIN), you cannot use the IRS online EIN application portal. You must apply by fax or mail using Form SS-4.

How long does it take to get an EIN as a non-resident?

The IRS estimates that non-resident EIN applications submitted by fax or mail can take 4–5 weeks to process. Applying through a Certified Acceptance Agent (CAA) like itin.net can significantly expedite this timeline.

What is the difference between an ITIN and an EIN for my Amazon KDP business?

An ITIN (Individual Taxpayer Identification Number) is for individuals who need a U.S. tax ID but do not qualify for an SSN. An EIN (Employer Identification Number) is for businesses, identifying them for tax purposes. As a UK author, you might need an ITIN to claim treaty benefits on your W-8BEN, and an EIN to open a U.S. business bank account.

Will I need to file U.S. taxes if I have an EIN?

Having an EIN does not automatically obligate you to file U.S. income tax returns if your only U.S. activity is earning royalties on Amazon KDP, provided you have a valid W-8BEN and claim treaty benefits. However, if you operate a U.S. business structure like a U.S. LLC, you may have filing requirements such as Form 5472. Consult a U.S. tax professional.

Can I use a UK address on my EIN application?

You can use a UK address on Form SS-4, but it must be a reliable mailing address where the IRS can send your EIN confirmation letter. Many non-residents use a U.S. mail forwarding service to ensure delivery. Some banks may also require a U.S. business address to open an account.

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