A Taxpayer Identification Number is the unique number the Internal Revenue Service uses to identify you and track your tax obligations. The two primary types of TINs are Social Security Numbers (SSN) and the Individual Taxpayer Identification Numbers (ITIN).
- Social Security Number (SSN): An SSN is a nine-digit number issued by the Social Security Administration (SSA). It’s primarily used for Social Security benefits and other government programs, but it’s also used as a TIN for tax purposes. SSNs are typically assigned to US citizens, permanent residents, and other individuals authorized to work in the United States.
- Individual Taxpayer Identification Number (ITIN): An ITIN is a nine-digit number issued by the IRS to individuals who are required to have a US taxpayer identification number but are not eligible for an SSN. ITINs are primarily used by nonresident aliens, foreign nationals, and dependents or spouses of US citizens or residents without SSNs. ITINs enable these individuals to meet their tax filing and reporting obligations.
- How to use when filing: When you’re working through our filing flow, you can use either of these numbers if you’re asked for your Social Security Number or TIN.
What if I don't have a Social Security Number?
Not everyone has a Social Security Number. But they still need to file taxes.
In this scenario, you’ll need an Individual Taxpayer Identification Number (ITIN) to file your return. You can learn more about this in our article, “What Is an Individual Tax ID Number (ITIN) and How to Get One.”
Once you have your ITIN, head over to the “File Taxes” tab in the app to get started with your return.
What if I don’t know my employer’s TIN?
If you don’t have your employer’s full TIN, try checking any correspondence or statements you’ve received from them, as it’s usually listed there. If you’re still unable to locate it, you may need to contact your employer directly to request the full TIN.
What should I enter if my spouse doesn’t have an SSN or ITIN due to being a foreign national?
Keeper cannot e-file a return if one spouse does not have an ITIN or SSN and the filing status is either married filing jointly or separately. If you have a dependent, you might be able to file as head of household without including your spouse’s information. Otherwise, Keeper won’t be able to assist with your filing. You can still use the app to track your daily business expenses though!
What should I do if my dependent doesn’t have an SSN yet?
To claim a dependent on your tax return, you'll need to provide their Social Security Number (SSN) along with their personal details. If your dependent doesn’t have an SSN yet, follow these steps:
- Apply for an SSN: Your dependent can complete Form SS-5 and submit it to the Social Security Administration (SSA) to apply for an SSN. You can find the form and more details on the SSA’s website or visit your local SSA office.
- Amend Your Return: If you’ve already filed your return before receiving your dependent’s SSN, you can submit an amended tax return using Form 1040-X to include the SSN and claim your dependent.