Validate the first identity signal
Validate the first identity signal
Confirm whether the applicant’s tax ID and business name match.
EIN lookup API for business verification
EIN lookup API for business verification
Validate a submitted business name and EIN/TIN against IRS records, then review the result alongside the business identity signals your team needs to make an onboarding decision.
Trusted by teams that need business identity decisions they can defend.
Trusted by teams that need business identity decisions they can defend.
What is an EIN lookup API?
What is an EIN lookup API?
An EIN lookup API automates matching submitted business name and EIN/TIN against IRS records. It gives onboarding, compliance, and risk teams a fast way to validate a core business identity signal before approval. Middesk returns the result alongside a business profile, registration details, review insights and other checks so teams can approve businesses faster and route exceptions for review.
How an EIN lookup API works
How an EIN lookup API works
Step 1: Submit business details
Send the business name, address, EIN/TIN, and any additional details needed for verification.
Step 2: Validate the EIN/TIN
Middesk checks whether the submitted name and tax ID match IRS records.
Step 3: Review the result in context
Use the match result with registration, address, screening, and review data to decide what should happen next.
Information you can get with an EIN lookup API
Information you can get with an EIN lookup API
If your current approach is one of these, it's worth understanding the gaps before your next audit — or your next fraud case.
01
EIN/TIN match
Confirms whether the submitted business name and tax ID match IRS records.
02
Business profile
Shows the submitted and discovered business identity data.
03
Registration details
Returns Secretary of State data when available.
04
Review insights
Surfaces items that may need review.
05
Optional checks
Add documents, watchlist screening, liens, bankruptcies, web presence, or monitoring when needed.
Applications of an EIN lookup API
Applications of an EIN lookup API
Companies in a variety of different industries need to verify business to effectively manage their B2B relationships.
Fintechs
Verify business customers quickly while meeting KYB, AML, and fraud-prevention requirements.
Insurance
Assess business identity and risk before underwriting commercial customers.
Commercial banking
Confirm a business is real, registered, and safe to serve before opening an account.
Lenders
Understand business identity and risk before extending capital.
Marketplaces
Keep fraudulent or non-compliant sellers out while reducing friction for legitimate businesses.
Payments
Screen merchants before enabling payment activity and monitor for risk after onboarding.
Accelerated business verification with KYB software
Accelerated business verification with KYB software
Catch mismatches early
Surface typos, name variations, or higher-risk applications before downstream review.
Review in context
Use EIN/TIN validation with registration, address, and screening data instead of treating it as a point check.
Ongoing monitoring
Get alerts on material changes after approval when monitoring is enabled.
What makes Middesk’s EIN lookup API different?
Middesk does not treat EIN/TIN validation as a disconnected lookup. The result lives with the business profile, where teams can also review registration status, addresses, people, screening results, ordered checks, and monitoring events.
Edge cases make KYB hard. We had significant fraud at the end of last year because our previous solution missed basic signals.
For example, the applicant name didn't match the officer name on the state registration, and the applicant email didn't match what was publicly listed on the business website. We were auto-approving businesses that should have gone to manual review. It cost us tens of thousands of dollars.
Head of Risk
Fintech Company
Frequently asked questions about an EIN lookup API
Frequently asked questions about an EIN lookup API
Middesk validates submitted business names and EIN/TINs against IRS records, then returns the result in the business profile.