Using a fake Social Security number is a federal crime with serious consequences

If you use a fake Social Security number — whether you created it yourself, bought one, or used someone else's number — you are committing identity theft and fraud. The federal government prosecutes these cases. Penalties include prison time (up to 15 years), fines (up to $250,000), and a permanent criminal record. You will also face civil liability if the real owner of the number sues you for damages.

The consequences do not stop at criminal charges. A fake number will eventually be discovered — by an employer running a background check, by a bank verifying your identity, by the Social Security Administration itself, or by the person whose real number you used. When discovered, you lose the job, the housing, the loan, or whatever you were trying to obtain. You then face prosecution on top of that loss.

If you are undocumented, using a fake number feels like the only way forward. It is not. There are legal paths that do not require a Social Security number, and there are programs designed for people in your situation. Those paths take longer and require more paperwork, but they do not end in prison.

Key Takeaways

  • Using a fake Social Security number is prosecuted as federal identity theft and fraud, carrying sentences up to 15 years in prison and fines up to $250,000.
  • Employers, banks, and government agencies all verify Social Security numbers routinely, so fake numbers are discovered eventually — often months or years later.
  • If you are undocumented and need to work or rent, there are legal alternatives that do not require a Social Security number, including ITINs and state ID programs.
  • A criminal record for fraud will block you from future housing, employment, loans, and citizenship pathways far more completely than your current immigration status does.

How fake Social Security numbers are discovered

Employers verify Social Security numbers through E-Verify, a federal database that cross-checks your name, date of birth, and number against Social Security Administration records. If the number does not match, the employer is notified. Some employers run this check on day one; others run it weeks or months into your employment. When a mismatch appears, you are typically terminated immediately and the employer is required to report it.

Banks and credit card companies verify numbers when you open an account or apply for credit. Landlords increasingly run background checks that include Social Security verification. Government agencies — the IRS, state tax boards, unemployment offices — verify numbers as part of routine processing. A fake number will eventually trigger a mismatch in one of these systems.

When a mismatch is discovered, the agency or employer does not always prosecute immediately. But the record exists. If you are later stopped by police, investigated for another matter, or apply for a loan or housing, that record surfaces. Federal prosecutors can bring charges years after the fake number was first used.

What happens to the real person whose number you used

If you used someone else's actual Social Security number rather than a fabricated one, that person's credit and tax records are now entangled with yours. Their credit score may drop. They may be denied loans or housing. The IRS may send them notices about income they did not earn. They may face wage garnishment or tax liens.

That person can sue you in civil court for damages. They can also report the theft to police, which triggers a separate criminal investigation. You are now facing both federal identity theft charges and a civil lawsuit from the victim.

Legal alternatives if you do not have a Social Security number

An Individual Taxpayer Identification Number (ITIN) is issued by the IRS to people who are not may be able to access for a Social Security number but need to file taxes or open a bank account. You apply using Form W-7 and proof of identity and residency. An ITIN allows you to work legally, file taxes, and open bank accounts without a Social Security number. Many employers will hire you with an ITIN, and many banks will open accounts for ITIN holders.

Some states issue state identification cards to people regardless of immigration status. These cards work for opening bank accounts, renting housing, and proving identity to employers. The requirements and availability vary by state — some states require proof of residency only, while others have additional requirements. Check your state's DMV website for current rules.

If you are undocumented and working, you can still file taxes using an ITIN. You report your income and pay taxes like any other worker. This creates a legal record of your presence and work history, which can be useful if immigration law changes or if you later pursue legal status. Many tax preparation nonprofits will help you file for free.

Some employers, particularly in construction, agriculture, and hospitality, will hire workers without verifying a Social Security number if you are paid in cash. This is not legal for the employer, but it is a reality. The risk to you is that you have no employment record, no tax record, and no protection if you are injured or unpaid. It is also not a long-term solution — you will eventually need documentation.

What to do if you have already used a fake number

If you have already used a fake Social Security number and are worried about discovery, you have limited good options, but you do have options. The longer you wait, the worse the situation becomes — the record accumulates, the employer or agency gets closer to discovering it, and your defense becomes harder.

Contact an immigration attorney or a criminal defense attorney immediately. Do not wait. An attorney can assess your specific situation, advise you on the risks, and in some cases negotiate with prosecutors or employers before charges are filed. Some attorneys offer free or low-cost consultations. You can find one through your state bar association or through legal aid organizations.

If you are undocumented, an immigration attorney may be able to help you explore legal status options that do not require you to confess to the fake number first. Some immigration remedies are available even if you have committed fraud, but timing matters. An attorney will know whether your situation qualifies.

Do not try to fix this by getting a real Social Security number or an ITIN and using that going forward while ignoring the fake number. The fake number is still in the system. It will still be discovered. Using multiple numbers makes the fraud worse, not better.

The long-term cost of a fraud conviction

A conviction for using a fake Social Security number stays on your criminal record permanently. It will appear on background checks for the rest of your life. Employers, landlords, banks, and government agencies will see it.

A fraud conviction makes it nearly impossible to obtain housing — most landlords will not rent to someone with a fraud conviction. It blocks many jobs, particularly those requiring a security clearance or bonding. It makes it harder to get loans, credit cards, or business licenses. If you are undocumented, a fraud conviction makes it far harder to ever obtain legal status; immigration judges view fraud as a sign of bad moral character.

The immediate consequence of using a fake number — getting a job or an apartment — is temporary. The consequence of being convicted — the permanent criminal record — lasts forever and closes doors that would otherwise be open to you.

Frequently Asked Questions

Can I get in trouble for using a fake Social Security number if I did not know it was fake?

If you genuinely did not know the number was fake — for example, someone gave it to you and you reasonably believed it was real — you may have a defense. But you need an attorney to make that argument. Do not assume ignorance protects you. Prosecutors can argue you should have known, and the burden is on you to prove otherwise.

What if I only used the fake number once, years ago?

One use is still fraud. The time that has passed does not erase it. Federal prosecutors can bring charges years after the fact. The longer ago it happened, the less likely prosecution becomes, but it is not impossible. An attorney can assess the risk based on your specific situation.

Will getting an ITIN erase the fake Social Security number from my record?

No. An ITIN is a separate number. The fake Social Security number remains in the system. You should not use the fake number again, but getting an ITIN does not delete the record of past use. An attorney can advise you on how to handle the transition.

Can I be deported for using a fake Social Security number?

Yes. A fraud conviction can trigger deportation proceedings. Even if you are not deported, a fraud conviction makes it much harder to obtain legal status later. This is why consulting an immigration attorney before taking any action is critical — they can help you understand the immigration consequences of your specific situation.

What if my employer already knows I used a fake number but has not reported me?

Your employer may be waiting to see if you quit, or they may be gathering documentation before reporting. Do not assume silence means safety. Consult an attorney now, while you still have time to act before charges are filed. An attorney may be able to negotiate with your employer or help you transition to legal work documentation.