¿Qué es un ITIN y lo necesitan los inversionistas extranjeros?

An Individual Taxpayer Identification Number, or ITIN, is a nine-digit number issued by the IRS to individuals who are not eligible for a Social Security Number but have a U.S. tax filing obligation. It is used for federal tax purposes only and does not authorize work in the United States or change immigration status.

For foreign real estate investors, an ITIN is commonly needed when filing a U.S. tax return, receiving rental income subject to withholding, reporting income from a partnership or LLC, or selling a property subject to FIRPTA withholding. Some lenders and title companies also request one as part of their compliance process.

If you own U.S. rental property and receive rental income, the IRS may require you to file an annual tax return — Form 1040-NR for nonresident aliens. You need an ITIN to file that return. Without one, you cannot report income, claim deductions, or receive a refund of any amounts withheld.

If you are selling U.S. property, FIRPTA withholding rules may apply and the IRS will need to identify you for any refund or liability. If you own the property through a single-member LLC that is taxed as a disregarded entity, the ITIN requirement flows through to the individual owner.

If a lender requires one for loan processing or if a bank asks for one to open an account, you will need to apply before those processes can move forward. The ITIN does not replace an EIN for an LLC — those are separate identification numbers for different purposes.

The primary application form is IRS Form W-7. You submit it with original or certified identity documents — typically a valid passport — and with either a completed U.S. tax return or a qualifying exception. One common exception for real estate investors is a passive income exemption when rental income is involved.

Applications can be submitted by mail to the IRS, in person at an IRS Taxpayer Assistance Center, or through a Certifying Acceptance Agent, which is an individual or organization authorized by the IRS to review identity documents without requiring you to mail originals. Many international tax professionals and accountants can act as Certifying Acceptance Agents.

Processing times vary but are generally several weeks. If you are approaching a tax filing deadline, plan accordingly. Consult a qualified U.S. tax professional to confirm whether an ITIN is required for your situation and to help you apply correctly.