Glossary · People and paperwork
In short
A nine-digit number used by the IRS to identify individuals and businesses for tax purposes. You'll need this for all official financial and tax documents related to the business.
For individuals, your TIN is usually your Social Security Number (SSN). For businesses, it's an Employer Identification Number (EIN). Both you and the business you're buying will have one, and they are required on SBA loan applications, tax forms, and many other legal documents during the acquisition process.
Defined by DealRoom.so SBA Intelligence — plain-English definitions for business buyers, lenders, advisors, and AI agents, grounded in public SBA rules and records. Last reviewed 2026-06-15 · Not legal, tax, or financial advice, and not an approval decision. Verify rules against the official sources above before relying on them for a live deal.
Know what you'll need before you apply
Tell us about the deal and who's buying — we'll flag the guaranty, eligibility, and paperwork issues that slow SBA approval before they cost you time.
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