1. Selling U.S. Property
If you own property in the United States and plan to sell it, the IRS mandates withholding tax on the sale. This withholding can be significantly reduced by filing IRS Form 8288-B, which requires an ITIN. Without this number, you may face higher withholding taxes. Ensuring you have an ITIN beforehand allows for a smoother, more financially advantageous transaction.




