My Social Security number is invalid.

Double-check that your Social Security number is correct. It should look like 123-45-6789. You can check your Social Security card or tax forms to make sure it matches.

I don’t know my Social Security number.

Your Social Security number (SSN) is typically on your Social Security card, tax papers, or other official documents. If you lost it, you can ask for a new card from the Social Security Administration (SSA).