Can an ITIN Convert to an SSN? What Changes When You Qualify

Why Does an ITIN Not Convert Directly Into an SSN?

An ITIN and an SSN are issued by two different federal agencies with two different legal purposes. The IRS issues ITINs purely for tax processing — an ITIN does not authorize work or confer immigration benefits. The SSA issues SSNs to people who are work-authorized in the United States. Because the criteria for each number are different, there is no administrative shortcut: a person who becomes eligible for an SSN must apply for it through the SSA on its own track.

For the full comparison, see the ITIN vs SSN guide.

When Does an ITIN Holder Become Eligible for an SSN?

• Work-authorized visa. H-1B, L-1, O-1, TN, E-2, and similar work visas all confer SSN eligibility.
• Lawful permanent resident (green card). Permanent residents are automatically eligible.
• Asylum or refugee status. Both confer SSN eligibility.
• Marriage to a U.S. citizen. After status adjustment to permanent resident, the spouse becomes eligible.
• F-1 student transitioning to OPT. Once the EAD is issued, the student qualifies.
• Naturalization. New U.S. citizens are eligible.

How Do You Apply for an SSN After Holding an ITIN?

1. Visit a Social Security Administration field office in person (the SSA does not accept SSN applications by mail for first- time applicants over age 12).
2. Complete Form SS-5 (Application for a Social Security Card).
3. Bring proof of identity (passport), proof of immigration status (visa stamp, I-94, green card), and proof of work authorization if applicable (EAD).
4. The SSA issues the new Social Security card within 2 to 4 weeks by mail.
5. Once received, write to the IRS to rescind the ITIN and merge tax records.

How Do You Notify the IRS to Rescind an ITIN After Getting an SSN?

Mail a signed letter to the IRS ITIN Operation, P.O. Box 149342, Austin, TX 78714-9342. The letter must include: full legal name, both old and new mailing addresses, the ITIN, the new SSN, and copies of the new Social Security card and the original CP565 ITIN assignment letter. Sign the letter and request consolidation of prior tax records under the new SSN. The IRS confirms rescission in writing within 4 to 6 weeks.

What Changes Immediately When the ITIN Holder Receives an SSN?

• Work authorization. The taxpayer can now be hired legally in the U.S.
• Social Security benefits eligibility. Future earnings credited to the SSN count toward retirement and disability benefits.
• Earned Income Tax Credit (EITC). SSN holders who otherwise qualify can claim the EITC, which ITIN holders cannot.
• Standard credit reporting. Credit bureaus attach the file to the SSN; some prior ITIN-based credit history can be transferred upon request.
• All future tax filings use the SSN. The ITIN should never be used again once the SSN is issued.

What Happens to Prior Tax Returns Filed Under the ITIN?

Once the IRS receives the consolidation letter, prior tax returns, refunds, payments, and credits are linked to the new SSN. The taxpayer's filing history is preserved — nothing is lost. The only history that may not transfer fully is wage reporting under Social Security, which depends on how employers originally reported the income.