ITIN for Your Spouse on H4: How NRIs File Jointly in 2026

Why your H4 spouse needs an ITIN, and why MFJ beats MFS

An H4 visa does not come with a Social Security Number unless your spouse has separate work authorization. No SSN means no way to identify her on a tax return, and the IRS built the ITIN exactly for this gap. Without one, your only realistic option is Married Filing Separately (MFS), and MFS is expensive.

Here is the core math. For tax year 2025, the IRS sets the MFJ standard deduction at $31,500 (source: IRS Publication 501). File separately and your deduction drops to the individual amount, roughly half of the joint figure (confirm the exact MFS number with a CPA). If you are the only earner, filing jointly means your single H1B salary is offset by the full $31,500 and taxed through the wider MFJ brackets. In practice, for a typical one-income H1B household, that difference is often worth several thousand dollars a year. If your compensation includes equity, the bracket effect compounds; see our guide to RSU taxes on H1B for how vesting income stacks on top of salary.

MFS also blocks or limits several credits and deductions. The specifics vary by situation, so treat MFS as the fallback, not the default, and have a CPA run both scenarios if your case is unusual (for example, if your spouse has significant India income).

Step by step: filing Form W-7 attached to your joint 1040

The W-7 is not a standalone application you send in ahead of time. In the normal case, it rides along with the tax return:

1. Prepare the joint Form 1040 with your spouse listed, leaving her SSN/ITIN field blank (your preparer or software will flag it as "applying for ITIN").
2. Complete Form W-7 for your spouse. One W-7 is required for each ITIN applicant, so if you are also applying for dependents, each gets their own form (source: IRS, How do I apply for an ITIN).
3. Attach identity documents. A valid passport alone proves both identity and foreign status, which is why almost every Indian applicant uses it (source: IRS, ITIN supporting documents).
4. Submit the package. If mailing, the address is: Internal Revenue Service, ITIN Operation, P.O. Box 149342, Austin, TX 78714-9342. Alternatively, book an in-person appointment (more on that below).
5. The IRS processes the W-7 first, assigns the ITIN, then processes the return with the new number.

Two practical notes. First, the W-7 spouse category generally requires a tax return to be attached unless a specific exception applies; check the W-7 instructions or ask a CPA whether an exception fits you. Second, a return with a W-7 attached is widely understood to require paper filing, since e-file systems reject a return with a missing taxpayer identification number; confirm the current-year e-file rules with your preparer, but plan for paper.

The passport problem: certified copies vs mailing the original to Austin

This is the part that makes families nervous. Mailing your spouse's only passport to a PO box while she is living in the US on a visa feels risky, and the IRS timeline does not help: mailed original documents are returned within 60 days (source: IRS, How do I apply for an ITIN). Two months without a passport is a real constraint if there is any chance of travel, a visa stamping trip, or an I-94 issue.

You have alternatives. The IRS accepts "a certified copy from the original issuing agency (with official stamped seal)" in place of the original, and it states plainly, "We don't accept notarized documents" (source: IRS, ITIN supporting documents). For an Indian passport, the issuing agency is the Government of India, so the certified copy route runs through Indian government channels in the US; the IRS also notes that US embassies and consulates provide certification services for their own citizens. Contact your Indian consulate (or check with a CPA) to confirm exactly how they issue a certified true copy and what it costs, since procedures vary by consulate.

One more angle worth checking before you start: if your spouse's passport is close to expiry, renew it first. An expiring passport creates problems well beyond the ITIN. Our Indian passport renewal in the USA guide covers the VFS Global process, fees, and the photo spec that trips people up.

Three ways to apply: mail, IRS TAC, or a Certifying Acceptance Agent

The IRS offers three application channels (source: IRS, How do I apply for an ITIN):

The in-person options solve the passport problem cleanly: at a TAC or CAA appointment, documents are authenticated and handed back on the spot. TAC appointments are free but can be scarce during tax season, so book early. CAAs charge a fee but also review the W-7 package before it goes out, which matters because an error-ridden W-7 gets rejected and restarts your clock.

Spouse was a nonresident this year? The election to file jointly

A common situation: you meet the substantial presence test on H1B, but your spouse arrived mid-year on H4, or spent the whole year in India, and is a nonresident for tax purposes. Nonresidents normally cannot file a joint return. The fix is an election under the nonresident spouse rules: a US resident married to a nonresident can choose to treat the nonresident spouse as a US resident for the entire year and file jointly, by attaching a signed statement from both spouses to the joint return (source: IRS, Nonresident Spouse).

The tradeoff is stated plainly by the IRS: "Each spouse must report their entire worldwide income for the year you make the choice and for all later years unless the choice is ended or suspended." That means your spouse's India-side income, whether NRO interest, rent from a flat, or freelance income, goes on the US return. Foreign tax credits and the India-US treaty usually soften the blow, but the reporting obligation is real; our guide to reporting India income on a US return walks through the mechanics. If you yourself moved mid-year and are dual-status, the analysis changes again; see dual-status filing when moving to the US.

For most H4 spouses with little or no India income, the election is an easy yes: worldwide income to report is near zero, and the $31,500 deduction is pure savings.

Timelines for the 2026 filing season

The IRS gives concrete numbers here (source: IRS, How do I apply for an ITIN):

• 7 weeks to be notified of ITIN application status in the off season.
• 9 to 11 weeks if you apply during tax season (January 15 to April 30) or from overseas.
• Within 60 days for the return of mailed original documents.

Because the ITIN must be issued before the return is processed, your refund waits behind the W-7. If April 15 is approaching and you are not ready, filing an extension is a common play, but note that an extension extends time to file, not time to pay; talk to a CPA about whether to extend or to submit the W-7 package with the return by the deadline.

Adding H4 dependents: children without SSNs

Everything above applies to dependents too: one W-7 per applicant, same documentation rules, same channels. The credit picture for ITIN dependents is more restrictive than for children with SSNs, and the rules shift between tax years, so do not assume the Child Tax Credit applies; confirm with a CPA which credits your ITIN dependents qualify for before you count on the refund.

ITIN expiry and renewal

An ITIN that goes unused on federal returns for a stretch of years can expire and require renewal before it works on a new return; the commonly cited window is three consecutive years of non-use, but confirm the current expiry rules with a CPA or on irs.gov before relying on an old ITIN. Practical takeaway: if you filed jointly once and then skipped listing your spouse, check the ITIN's status before the next joint filing rather than discovering a rejection in April.