Background check vs. private investigation: what’s the difference?

What instant reports miss

• Records under name variations, maiden names or aliases
• Court cases in counties that aren’t digitized or aren’t in the vendor’s data
• Civil lawsuits, judgments and business disputes
• Records that were sealed or expunged but remain in old data
• Mix-ups with people who share a name

What a background investigation adds

1. Identity verification, so every record is tied to the right person.
2. Address history, used to decide which counties to search.
3. Criminal and civil court searches at the source.
4. Business affiliations, liens, judgments and bankruptcies.
5. Licenses and claimed credentials, verified.
6. Open-source and social media research, and where useful, discreet interviews.

When the FCRA applies

If you are using a background report to decide on employment, tenancy, credit or insurance, the federal Fair Credit Reporting Act applies, including disclosure, written authorization and adverse-action notices. Personal due diligence, such as checking a date or a business partner, generally falls outside those rules, but the rules about how information is gathered still apply.

Where to start

See our background investigations, business partner due diligence and pre-marital background checks.

This guide is general information, not legal advice. Laws change and every situation is different; talk to a Tennessee attorney about your case. Last reviewed October 25, 2026.