An Employer Identification Number (EIN) is required for Canadian companies that do business in the US. If you have a business in Canada that is connected to the US, even in a small way, make sure that you read this article!

What is an Employer Identification Number (EIN)?

An Employer Identification Number (EIN) is a unique nine-digit number assigned by the Internal Revenue Service (IRS) – the US tax authority equivalent to the Canada Revenue Agency – to identify business entities operating in the United States. Think of it as the US equivalent of your Canadian Business Number – a federal tax identification number for organizations.

The IRS uses the EIN to track business activities and ensure compliance with US tax laws. Unlike an Individual Taxpayer Identification Number (ITIN), which is for individuals who don’t have a Social Security Number (SSN) but have US tax obligations, an EIN is specifically for identifying corporations, partnerships, sole proprietorships (under certain circumstances), and other non-personal entities. Each EIN is unique to a specific business and is a fundamental identifier for various US tax and business-related processes.

When are Businesses in Canada Required to Obtain an Employer Identification Number (EIN)?

Some of the most common reasons Canadian companies would require an EIN are as follows:

• Completing Form W8-BEN, W8-BEN-E, or W8-ECI: US vendors or customers often request these forms to determine the correct US withholding tax rate on payments made to foreign entities. Providing a US EIN on these forms can help reduce or even eliminate US withholding taxes based on treaty benefits. For instance, if a Canadian company provides services to a US client, submitting the appropriate W8 form with their US EIN can ensure they are taxed correctly under the Canada-US tax treaty.
• Reducing or Eliminating US Withholding Taxes: As mentioned above, having a US EIN is often a prerequisite for claiming benefits under the Canada-US tax treaty that can reduce or eliminate US withholding taxes on certain types of income, such as payments for services rendered in Canada, royalties, or interest.
• Setting Up a US Bank Account: Many US financial institutions require a US EIN to open a business bank account for a foreign entity. This allows them to properly identify the business for regulatory and reporting purposes within the US financial system. Similarly, setting up a US EIN is often necessary for establishing a US PayPal account for business transactions.
• Hiring US Employees or US Subcontractors: If your Canadian company hires individuals located in the US as employees or subcontractors, you will need a US EIN to comply with US payroll tax regulations, including withholding and remitting federal and potentially state income taxes, as well as Social Security and Medicare taxes.
• All Tax Remittances to the IRS: Any tax payments your Canadian company needs to make to the IRS, whether it’s income tax related to a US permanent establishment, payroll taxes for US employees, or withholding taxes on dividends paid to US shareholders, will require the use of your US EIN.
• Filing a US Business Tax Return: Depending on the nature and extent of your business activities in the US, you may be required to file a US business tax return (e.g., Form 1040-NR for sole proprietors or Form 1120-F for corporations). Your US EIN is a mandatory identifier on these forms.
• Claiming an Exemption Under the Canada-US Treaty: To claim an exemption from US income taxes on US business profits under the Canada-US tax treaty (specifically if you do not have a “permanent establishment” in the US), you will typically need to provide your US EIN on the relevant tax forms.
• Exporting Goods Across the Border: US Customs and Border Protection (CBP) may require a US EIN for Canadian companies exporting goods into the United States for identification and tracking purposes.
• Investing in US Real Estate Through a Canadian Entity: If your Canadian company invests in US real estate, you will likely need a US EIN for tax reporting and compliance related to that investment.
• Forming a US Subsidiary or Branch: Establishing a formal legal presence in the US, such as a subsidiary or branch, almost always necessitates obtaining a US EIN for the new entity.
• Participating in Certain US Government Programs: Some US government programs or contracts may require foreign entities to have a US EIN.

Additionally, the following types of businesses and other entities that can obtain an employer identification number include:

• Corporations
• Sole proprietorships
• Non-profit organizations
• Partnerships
• Government agencies / entities
• Churches
• Plan administrators
• Military entities
• Farmers’ cooperatives
• Estates and Trusts
• Trusts

How to Obtain an Employer Identification Number (EIN)

Obtaining a US EIN is a free service provided by the IRS. There are several methods available to Canadian companies:

Online Application: The most efficient way for many Canadian businesses is to apply online directly through the IRS website. The IRS has an online EIN application that, once completed and validated, can provide you with your US EIN immediately. You will need to complete Form SS-4, Application for Employer Identification Number, electronically.

Telephone Application: You can also apply for a US EIN by calling the IRS directly at their designated international applicant number. Be prepared to answer the questions from Form SS-4 over the phone. If your application is approved, you will typically receive your US EIN immediately during the call. Keep in mind the time difference between Canada and the US when planning your call.

Mail or Fax Application: While these options are available, they are significantly slower than the online or phone methods. You would need to complete Form SS-4 and mail it to the IRS address specified for foreign applicants or fax it to the designated fax number. Processing times for mail and fax applications can take several weeks.

Regardless of the method you choose, it is crucial to ensure the information you provide on Form SS-4 is accurate. Any errors can lead to delays or the issuance of an incorrect US EIN. The form will ask for details about your Canadian company, such as its legal name, address (both in Canada and potentially a US address if you have one), the type of legal structure (e.g., corporation, partnership), and the reason for applying for the US EIN. If you use the service of a competent tax professional, you could obtain it in as little as one day.

Once you receive your US EIN, it is vital to keep it safe and readily accessible, as you will need it for various business activities.

After Obtaining the EIN

Obtaining a US EIN is just the first step. Once your Canadian business has this number, you must carefully consider whether you are meeting all the US tax filing obligations that come with it. The very act of obtaining a US EIN because you have business dealings with US vendors or customers signals to the IRS that your business is likely “carrying on business in the US.”

“Carrying on business in the US” is a broad concept and can encompass various activities, even without having a physical office. Examples include having dependent agents in the US, soliciting business in the US regularly, or having significant economic activity within the US. The implication of such a position by the IRS means that your business may have tax filing obligations with Uncle Sam to report income related to US business activities.

There is good news, though. As long as your business does not have a ‘permanent establishment’ in the US, your income from US customers will not be subject to US tax (you will basically file a US tax return indicating that your business does not have a permanent establishment and is therefore not liable for tax).

Generally, a permanent establishment refers to a fixed place of business through which the business of an enterprise is wholly or partly carried on (e.g., a branch, office, factory). It can also include an agent who habitually exercises an authority to conclude contracts in the US on behalf of your business. For more information on whether you may have a permanent establishment or not, please see this article on permanent establishment criteria in the United States.

Filing U.S. Tax Returns

As an international tax accountant, I highly encourage all businesses that may or may not have a US permanent establishment to file the appropriate US tax return. This provides several benefits.

Once you file the tax return, that year becomes statute-barred after a few years (generally three years after you file the return). This means that after the appropriate period, the IRS cannot reassess tax or take other actions against your business regarding that year. If you choose not to file, the IRS can come back anytime (even ten, twenty years later) and request financial documents which you may have lost.

Additionally, if your business does not have a permanent establishment, you can appeal to that fact which may exempt you from paying any US taxes on your US income. This option becomes very murky or even impossible if you do not file the return and the IRS comes knocking and requires you to file the tax return. The IRS may then treat your business as having a permanent establishment and impose income tax regardless of your business’ degree of activities in the US.

The two types of forms to file are the 1040-NR and the 1120-F. The 1040-NR form is for the U.S. Nonresident Alien Income Tax Return for Sole Proprietors. This form is used to report your U.S.-source income and calculate any taxes owed. You’ll need to include your EIN on the form and report the income attributable to your U.S. activities.

The 1120-F form is for the U.S. Income Tax Return of a Foreign Corporation. This form is used to report the income and deductions related to your U.S. operations and to calculate the tax due on your U.S. profits. The 1120-F is more complex than the 1040-NR and may require detailed financial information about your U.S. business activities.

Filing these tax returns accurately and on time is essential to avoid penalties and ensure that your company remains in good standing with the IRS.

Know Your Tax Obligations

Obtaining a US EIN is a critical step for Canadian companies venturing into the US market. However, it’s equally vital to understand the ongoing US tax obligations that may arise once you have this identification number. Carefully assessing whether your activities constitute “carrying on business” in the US and whether you have a “permanent establishment” is paramount.

Proactively filing US tax returns, even if you believe you are exempt under the Canada-US tax treaty, offers significant protection and clarity with the IRS. Navigating these cross-border tax complexities can be challenging, making the guidance of a competent international tax professional an invaluable asset to ensure compliance and avoid potential pitfalls.

We can assess if you or your company is carrying on business or has a permanent establishment in the United States.
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