A foreign tax identification number in Canada is the tax ID your country of residence has issued to you, which Canadian banks, brokerages, and other financial institutions are required to collect and pass to the Canada Revenue Agency so it can be shared with your home tax authority.1OECD. Automatic Exchange of Information: Guide on Promoting and Assessing Compliance by Financial Institutions The term is generic. Every country calls its number something different, and the format varies. What Canada wants is whatever your jurisdiction issues to identify you for tax purposes.
You will run into this requirement in two situations: when you open or hold a Canadian financial account as a tax resident of another country, and when you are a Canadian resident who has to report foreign property on your own return.
Why Canadian Banks Ask for a Foreign Tax Number
Two parts of the Income Tax Act drive the request. Part XVIII implements Canada’s FATCA obligations to the United States, so Canadian financial institutions must identify U.S. account holders, collect their U.S. tax number, and report the account to the CRA, which forwards it to the IRS.2Canada Revenue Agency (CRA). Guidance on Canada’s Enhanced Tax Information Exchange Agreement Part XIX does the same thing under the Common Reporting Standard for residents of the 100-plus other participating jurisdictions.3Canada Revenue Agency (CRA). Information for Individuals Holding Accounts With Canadian Financial Institutions
In practice the institution asks you to complete a self-certification when you open an account. You declare your country or countries of tax residence and provide the corresponding tax ID. The bank reports what you gave it, along with balances and income, and the CRA routes the information abroad. This applies to accounts, not to one-off transactions, and it applies regardless of whether you also happen to be a Canadian resident. A U.S. citizen living in Canada with a Canadian SIN and Canadian tax filings is still a U.S. person for FATCA, and the bank still needs the U.S. number.
Which Number Counts as Your FTIN
The correct number is the one your jurisdiction issues for tax purposes. The OECD publishes a directory of TIN formats country by country, which is the reference financial institutions use when a self-certification lists something unfamiliar.4OECD. Tax Identification Numbers
United States
For U.S. tax residents, the number is nine digits. U.S. citizens and permanent residents use the Social Security Number. Non-citizens with a U.S. tax obligation who cannot get an SSN use an Individual Taxpayer Identification Number. Businesses use an Employer Identification Number.5Bureau of the Fiscal Service, U.S. Department of the Treasury. Taxpayer Identification Number (TIN) Policy – FAQs If you’re a U.S. citizen in Canada without an SSN or ITIN, you apply through IRS Form W-7. Peak-season processing runs roughly seven to eleven weeks.6Internal Revenue Service. Instructions for Form W-7
United Kingdom
The number most commonly requested is the Unique Taxpayer Reference, a 10-digit code issued for Self Assessment and Corporation Tax.7GOV.UK. Find Your UTR Number The National Insurance Number is sometimes accepted on international forms, but the UTR is the standard for CRS purposes.
Other Countries
Formats shift considerably. India’s Permanent Account Number is a 10-character alphanumeric code where the fourth character marks the holder type (P for individual, C for company). Mexico’s Registro Federal de Contribuyentes is 13 characters for individuals and 12 for companies. In China, entities use an 18-digit Unified Social Credit Code and individuals use their national citizen ID number. If your country’s number does not look like the ones above, that is normal; check the OECD directory or ask your home tax authority what to put on a foreign self-certification.
If You Don’t Have a Foreign Tax Number
Some countries simply do not issue tax IDs, and the CRA distinguishes that from a resident who has one but hasn’t handed it over. If the jurisdiction does not issue one, the financial institution can report that reason and move on. If it does issue one and you have not provided it, expect follow-up.
For new accounts, self-certification is required at account opening. An institution that fails to collect it can face penalties under subsection 162(7) of the Income Tax Act.2Canada Revenue Agency (CRA). Guidance on Canada’s Enhanced Tax Information Exchange Agreement For accounts that were already open when the rules came in, the institution has to make genuine efforts at least once a year to obtain the missing number.
The tightest deadline applies to U.S. persons. Under CRA guidance, a specified U.S. person without a U.S. TIN must apply for one within 90 days of the institution’s request and provide it within 15 days of receiving it. Non-compliance can trigger penalties under subsection 162(6).2Canada Revenue Agency (CRA). Guidance on Canada’s Enhanced Tax Information Exchange Agreement
Canadian Residents Reporting Foreign Property on T1135
The requirement runs the other way too. If you are a Canadian resident individual, corporation, or trust and the total cost of your specified foreign property exceeds $100,000 CAD at any point in the year, you file Form T1135, the Foreign Income Verification Statement.8Canada Revenue Agency (CRA). Foreign Income Verification Statement Specified foreign property covers foreign bank accounts, shares in foreign corporations, foreign rental real estate, and interests in foreign trusts, among other categories.
The form has two tiers. Between $100,000 and $250,000 CAD in total cost, you can use the simplified method in Part A. At $250,000 CAD or more at any point during the year, you must use the detailed method in Part B, which asks for country-by-country breakdowns of each asset category.8Canada Revenue Agency (CRA). Foreign Income Verification Statement The detailed method is where foreign identifiers for the country and institution holding each asset matter most.
If you genuinely cannot obtain a foreign tax number for a particular asset, the CRA’s instruction is to explain that in the notes section of the form rather than leave the field empty. What the CRA looks for is documented diligence: evidence that you tried.
Penalties
The penalty structure is tiered and worth knowing before you decide to skip a form.
- A late or incomplete T1135 draws a penalty under subsection 162(7) of $25 per day, with a $100 minimum and a $2,500 maximum. Each unfiled year is a separate violation.9Canada.ca. Table of Penalties
- Gross negligence on a T1135, meaning knowingly false statements or omissions, brings a penalty of the greater of $24,000 or 5% of the cost of the misreported foreign property.9Canada.ca. Table of Penalties
- An individual who does not provide their SIN, trust account number, or business number when a Canadian slip preparer asks faces a $100 penalty per failure, and the institution that fails to make a reasonable effort to collect it can also be penalized $100 per failure.10Canada Revenue Agency (CRA). Penalties
The daily late-filing amount looks modest. The gross negligence penalty does not: 5% of cost on a significant foreign portfolio easily runs into six figures. Foreign property reporting is a CRA enforcement priority, and the burden sits with the taxpayer to show that reasonable steps were taken to get the numbers right.