TIN

TIN (plural TINs)

1. (US, Philippines, finance) Initialism of taxpayer identification number.
   • 2025 May, “The One, Big, Beautiful Bill”, in United States House Committee on Ways & Means‎^[1], page 43:

     The AOTC and/or LLC cannot be claimed if the TIN is issued after the due date of the return (including extensions).

• SSN
• EIN
• ITIN
• ATIN

• INT, ITN, i'n't, in't, int, int., nit