How is the KYB rating determined, and what does each grade mean?

The KYB rating measures how confident we are in a business's identity — whether it exists, how well it matches, and the quality of the search.

Factors that affect the KYB rating include:

• Exactness of Name Match

• Exactness of Address Match

• TIN/EIN Match (if provided)

• Secretary of State status

Grade bands:

• A: 90–100

• B: 80–89

• C: 60–79

• F: below 60

What lowers a rating: a mismatched EIN, a partial / state-only address match, or an inactive or unknown Secretary of State registration.

More detail: https://docs.baselayer.com/docs/baselayer-scores-ratings