Filling BOI does not directly involve tax information, they ask for the EIN though. The focus is primarily on identifying who owns and controls U.S. companies. However, you should note, if you're concerned by tax information exchange, the U.S. does have agreements with some countries to share financial and tax information under specific conditions, you probably heard of FATCA. A foreigner owning a U.S. LLC doesn't automatically trigger information sharing with your home country unless specific criteria are met under those agreements. Obviously, it goes without saying that if your company maintains a bank account, it's likely subject to the Automatic Exchange of Information (AEOI) under the Common Reporting Standard (CRS). This means that financial institutions may report the account details to tax authorities, who could then exchange this information with the tax authorities in your country of residence. This is separate from the Beneficial Ownership Information reporting to FinCEN and pertains more directly to tax compliance and transparency on a global scale.