The full explanation
The IRS also uses it as your taxpayer identification number on tax returns. You apply with Form SS-5 and proof of identity, age and U.S. citizenship or lawful immigration status, and the service is free. People who must file taxes but cannot get an SSN use an ITIN. Identity thieves look for this number; the government advises keeping the card in a safe place and not carrying it in your wallet.
An example
When Héctor starts a new job, his employer asks for his Social Security number for the hiring and tax paperwork. Héctor keeps his card at home, not in his wallet.
You will see it in…
- Your Social Security card
- Your Form W-2 and tax return, in the identification number box
- The mortgage application and the authorization to check your credit
