Tax Identification Number (TIN)
In one sentence: Any number used to identify a taxpayer — SSN, ITIN, EIN, or ATIN.
What it means
Required on every return, W-9, and most information filings. Errors here trigger backup withholding and matching issues.
In one sentence: Any number used to identify a taxpayer — SSN, ITIN, EIN, or ATIN.
Required on every return, W-9, and most information filings. Errors here trigger backup withholding and matching issues.