What happens if I sell U.S. property without an ITIN?

The sale can close and the buyer still withholds. But the IRS will not send you the stamped copy of Form 8288-A without a taxpayer identification number on it, a withholding certificate application is not complete without one, and you need one for the U.S. return that claims the withholding back. The number does not stop the sale; its absence slows down getting your money.

Can I apply for the ITIN before there is a buyer?

The FIRPTA route on Form W-7 is built around a transaction: it is filed with a completed Form 8288, 8288-A or 8288-B and the contract or closing statement. Before that, the work is getting the identity documents ready so the application goes in with the first form the transaction produces.

Is an ITIN the same as being a U.S. taxpayer?

No. An ITIN is a processing number for people who need to file or be identified on U.S. tax forms but cannot get a Social Security number. It does not change your tax status or create a filing obligation by itself.

FIRPTA · Taxpayer numbers

Selling U.S. property without an ITIN: what changes

A foreign seller without an ITIN or Social Security number can still sell. What the number unlocks is everything after: the IRS-stamped Form 8288-A that proves the withholding, a complete withholding certificate application, and the U.S. return that claims the withholding as a credit. A seller applies on Form W-7 under its FIRPTA exception, attaching the withholding form the transaction produced.

By Danilson Ramos · Founder, Atamatax

Updated October 2026

Three places the number matters

The stamped Form 8288-A

The IRS stamps the seller’s copy only when a taxpayer number is on the form. No number, no stamped copy.

A certificate application

The IRS’s processing target only starts once the application is complete — with every party’s taxpayer number.

Your U.S. return

The return that reports the sale and claims the withholding needs a number to be processed.

Form W-7 under the FIRPTA exception

The IRS’s guidance for foreign property sellers sets out what goes into the envelope:

The original Form W-7, with reason box “h” checked and “Exception 4” written beside it.
The identification documents the Form W-7 instructions require — originals or certified copies, per those instructions.
A completed Form 8288, 8288-A or 8288-B — for a seller, copies of the buyer’s Forms 8288 and 8288-A, or the seller’s own certificate application.
A copy of the sale contract, the settlement statement or the Closing Disclosure.

When the ITIN is requested together with a withholding certificate application, the IRS says the ITIN request is processed within 10 days of receipt — the certificate itself follows its own timeline. A rejected and resubmitted application includes the rejection letter.

Plan it before the closing week

Identity documents take time to certify, especially from abroad. If you are planning a sale, settle each seller’s taxpayer-number status early; if the sale has already closed, the ITIN is the first thing standing between you and the credit. ITIN preparation is a separately priced add-on to any FIRPTA package — never bundled silently.

Questions

Common questions

What happens if I sell U.S. property without an ITIN?: The sale can close and the buyer still withholds. But the IRS will not send you the stamped copy of Form 8288-A without a taxpayer identification number on it, a withholding certificate application is not complete without one, and you need one for the U.S. return that claims the withholding back. The number does not stop the sale; its absence slows down getting your money.
Can I apply for the ITIN before there is a buyer?: The FIRPTA route on Form W-7 is built around a transaction: it is filed with a completed Form 8288, 8288-A or 8288-B and the contract or closing statement. Before that, the work is getting the identity documents ready so the application goes in with the first form the transaction produces.
Is an ITIN the same as being a U.S. taxpayer?: No. An ITIN is a processing number for people who need to file or be identified on U.S. tax forms but cannot get a Social Security number. It does not change your tax status or create a filing obligation by itself.

See it on your own sale

A few questions — estimates are fine — and you see the preliminary withholding, your cash at closing and what could change it. Nothing is filed or sent to anyone.

Check my FIRPTA situation

Authorities cited

IRS: ITINs for foreign property sellers — IRS — ITIN guidance for foreign property buyers and sellers (Form W-7, the FIRPTA exception, the stamped Form 8288-A)
Form W-7 — Form W-7 — Application for IRS Individual Taxpayer Identification Number (ITIN)
Instructions for Form 8288 — Instructions for Form 8288 (Rev. 01/2026) — rates, the 20-day filing rule, pending applications, multiple transferors, installment sales
IRS: reporting and paying tax on U.S. real property interests — IRS — Reporting and paying tax on U.S. real property interests (the transferor's return and the stamped Form 8288-A)
Form 8288-B — Form 8288-B — Application for Withholding Certificate for Dispositions by Foreign Persons of U.S. Real Property Interests

Primary sources (Cornell Legal Information Institute for the US Code and CFR; IRS.gov for forms, procedures, and treaty documents). This page is general information, not individualized tax or legal advice.

Atamatax provides tax preparation support and educational resources. This website does not constitute legal or tax advice.