An ITIN is a 9-digit tax processing number issued to certain nonresident and resident aliens, their spouses, and dependents who are ineligible for a Social Security Number (SSN). It is formatted like an SSN (NNN-NN-NNNN), starting with the number “9.” To obtain an ITIN, individuals must complete IRS Form W-7, which requires documentation verifying foreign/alien status and identity. SPV investors are subject to a KYC/AML background check, and investors with an ITIN must provide the necessary information to facilitate the check.