Added
[Mar 14, 2026] tin_match_type Field
about 2 months ago by Juan Escrig
Business search and TIN verification responses now include a tin_match_type field, returning the specific type of match according to the IRS.
The possible values are EIN, SSN or UNKNOWN.
This gives you more granular insight into TIN verification results beyond a simple pass/fail, making it easier to build nuanced decisioning logic around TIN checks.
Identifying sole proprietors or individuals who have submitted a SSN in their business applications is now possible.
Reach out to your Baselayer representative for more information.