ITIN for H-4 Visa: Step-by-Step Application Guide 2026

Why Does an H-4 Visa Holder Need an ITIN?

The H-4 visa is the dependent visa for spouses and children of H-1B workers. The IRS requires a Taxpayer Identification Number for every person listed on a US tax return. H-4 holders without work authorization cannot get an SSN, so they need an ITIN to be claimed as a spouse on a joint return or as a dependent on the H-1B's Form 1040.

For the full eligibility breakdown see the ITIN for H-4 visa holders page.

Which Reason Code Does an H-4 Applicant Use on Form W-7?

Reason code on line 6 determines which supporting documents the IRS expects. H-4 cases use one of two codes:

• (d) Dependent of US citizen or resident alien for H-4 children claimed as dependents on the H-1B return.
• (e) Spouse of US citizen or resident alien for an H-4 spouse filing jointly with a resident-alien H-1B holder.

Picking the wrong code is one of the most common rejection causes; the H-1B's tax status drives the choice.

What Documents Does an H-4 ITIN Application Require?

• Form W-7 for each H-4 applicant (one form per person)
• Current passport for each applicant (the only standalone identity + foreign status document)
• H-4 visa stamp or I-94 record as a supporting status document
• H-1B principal's federal tax return (Form 1040) attached to the packet
• School records (for H-4 children claimed as dependents who are US-resident students)

How Do You File a Joint Return With an H-4 Spouse?

1. Prepare the H-1B's Form 1040 as Married Filing Jointly.
2. Write Applied For on the H-4 spouse's SSN/ITIN field of the return.
3. Attach Form W-7 for the H-4 spouse with reason code (e).
4. Include the passport (or certified copies) and the joint statement electing to treat the H-4 spouse as a resident alien.
5. Mail the full packet to the IRS ITIN Operation in Austin, TX, or submit through a Certifying Acceptance Agent.

How Long Does the H-4 ITIN Process Take in 2026?

The IRS publishes a 7 to 11 week processing window. During tax season (January through April) the window stretches to 9 to 13+ weeks. The H-1B's return is held until the ITIN is assigned, which can delay refunds tied to the joint filing election or to dependent credits.

What Are the Most Common H-4 ITIN Mistakes to Avoid?

• Picking reason code (h) instead of (d) or (e).
• Mailing the passport without using a Certifying Acceptance Agent who can verify it locally.
• Filing Form W-7 without the H-1B's attached tax return.
• Forgetting to sign the joint-filing election statement when an H-4 spouse is being treated as a resident alien.
• Spelling names differently on Form W-7 vs the passport.