EIN Lookup

What is EIN
EIN stands for Employer Identification Number. It is a unique nine-digit number assigned by the Internal Revenue Service (IRS) to businesses, non-profits, and other entities for tax identification purposes in the United States.
An EIN is similar to a social security number for individuals. It is used by the IRS to identify businesses and organizations for tax reporting and filing requirements. The EIN is required for various activities, including opening a business bank account, hiring employees, filing tax returns, and conducting certain financial transactions.
To obtain an EIN, you need to apply with the IRS either online, by mail, or by fax. The application process is free, and you can obtain an EIN immediately when applying online. The IRS issues EINs to eligible entities, and once assigned, the number is unique to that specific organization and should be used for all tax-related purposes.
It's important to note that an EIN is specific to the United States, and other countries may have different systems for tax identification numbers.
EIN Lookup API
The EIN Lookup by Legal Entity Name API is created to offer a reliable and efficient method for searching and retrieving the Employer Identification Number (EIN) associated with a specific legal entity name. This API aims to assist users in quickly and accurately identifying the EIN of a business or organization based on its legal entity name, eliminating the need for manual research and streamlining the process of obtaining important tax-related information. 
By enabling seamless EIN lookup by legal entity name, this API facilitates improved efficiency and accuracy in business transactions and compliance processes.
The EIN  Lookup API is a very valuable tool which contributes to improved accuracy, compliance, and efficiency across a wide range of industries and business processes.
API Applications
Some important business areas where the EIN lookup API is very helpful are:
Tax Compliance and Reporting:
Tax Filings:
Individuals and businesses can use the API to ensure accurate tax filings by verifying the EIN associated with a specific legal entity name.
Tax Preparation Software:
Tax preparation software can integrate the API to assist users in automatically populating EINs when preparing tax returns.
Financial Transactions:
Lending and Loans:
Financial institutions can use the API to verify the EIN of businesses applying for loans, ensuring that the entity is legitimate and reducing the risk of fraud.
Investment and Banking:
Investment firms and banks can use the API to validate the identity of business clients and streamline account opening processes.
Vendor and Supplier Verification:
Vendor Screening:
Companies can quickly verify the EINs of potential vendors and suppliers when onboarding new business partners, improving supply chain management.
Procurement:
Procurement departments can use the API to verify vendor EINs to ensure compliance with company policies.
Legal and Compliance:
Contract Management:
Legal departments can utilize the API to confirm the EIN of contracting parties and ensure the accuracy of contract information.
Regulatory Compliance:
Organizations subject to regulatory requirements can use the API to validate EINs for compliance purposes.
Nonprofit and Grant Management:
Grant Verification:
Nonprofit organizations and grant administrators can verify the EINs of grant applicants to ensure eligibility and compliance with grant requirements.
Donor Management:
Nonprofits can use the API to validate the EINs of donors for tracking contributions and issuing tax receipts.
Insurance Industry:
Policy Administration:
Insurance companies can validate the EINs of policyholders and beneficiaries to ensure that policies are correctly issued and claims are processed accurately.
Legal and Investigative Services:
Legal Research:
Attorneys, investigators, and law enforcement agencies can use the API to gather information about businesses involved in legal cases or investigations.
Government Services:
Business Licensing:
Government agencies can incorporate the API into business registration and licensing processes to verify legal entity names and associated EINs.
Tax Enforcement:
Tax authorities can use the API to cross-reference legal entity names with registered EINs during tax audits and investigations.
Data Enrichment and Customer Relationship Management (CRM):
CRM Systems:
CRM platforms can enrich customer profiles with EIN data, helping businesses understand their corporate clients better.
Lead Generation:
Sales teams can use the API to identify potential corporate leads and prospects.
Real Estate Transactions:
Real Estate Due Diligence:
Real estate professionals can verify the EINs of property owners to ensure accurate property transactions.
API Details
You must first login before sending the request. The authorization header in the request must include the access token obtained from the login API call.
Need to pass the following information. Providing Employer's Legal Name(companyName) is mandatory. Rest other fields can be used by client to filter out the data more accurately.
companyName(required)
state(optional)
zip(optional)
tight(optional)
Clients must need to correctly pass the state value(if being passed in the input request).
If zip passed doesn't belong to the state passed in the input request, then results will be shown in context to the zip, not state. In other words, zip has higher priority .
Sample cURL
Pre-Production
Production
Curl
curl --location 'https://api-preproduction.signzy.app/api/v3/ein-lookup' \
--header 'Content-Type: application/json' \
--header 'Authorization: ' \
--data '{    
  "companyName": "apple",    
  "state": "ca",    
  "zip": "90025",    
  "tight": false
  }'
curl --location 'https://api-preproduction.signzy.app/api/v3/ein-lookup' \
--header 'Content-Type: application/json' \
--header 'Authorization: ' \
--data '{    
  "companyName": "apple",    
  "state": "ca",    
  "zip": "90025",    
  "tight": false
  }'
﻿
Curl
curl --location 'https://api.signzy.us/api/v3/ein-lookup' \
--header 'Content-Type: application/json' \
--header 'Authorization: ' \
--data '{    
  "companyName": "apple",    
  "state": "ca",    
  "zip": "90025",    
  "tight": false
  }'
curl --location 'https://api.signzy.us/api/v3/ein-lookup' \
--header 'Content-Type: application/json' \
--header 'Authorization: ' \
--data '{    
  "companyName": "apple",    
  "state": "ca",    
  "zip": "90025",    
  "tight": false
  }'
﻿
Request Body Parameters
Parameter
Data Type
Required
Description
ein
string
Yes
Required 9 digit numeric EIN(no alphabets and special characters allowed).
state
string
No
Optional state parameter to improve results(only 2 letter alphabet allowed e.g. CA).
zip
string
No
Optional zip code parameter to improve results. Zip is preferred over state(Only eithert 5 digit numeric or 5 digit numeric, followed by -, followed by 4 digit numeric allowed).
tight
boolean
No
Optional parameter to do tight matching. (Only the best match will be returned rather then all of the matches)(“true” or “false”).
Sample Response
Valid input
tight as true
Incorrect companyName
Incorrect countryCode
Incorrect ZIP
{
    "result": {
        "searchCompanyName": "apple",
        "searchState": "CA",
        "searchZip": "99999",
        "searchTight": true,
        "matchedEinCompanies": [],
        "timestamp": 1695970936
    }
}
{
    "result": {
        "searchCompanyName": "apple",
        "searchState": "CA",
        "searchZip": "99999",
        "searchTight": true,
        "matchedEinCompanies": [],
        "timestamp": 1695970936
    }
}
﻿
Response Body parameters
Parameter
Data Type
Description
searchCompanyName
string
Company name in the input.
searchState
string
State in the input(Null if not provided).
searchZip
string
Zip in the input(Null if not provided).
searchTight
boolean
Tight parameter in the input(“true” or “false”). (false by default).
matchedEinCompanies
Array of Objects
Array of matched EIN companies.
timestamp
number
Timestamp of response.
matchedEinCompanies Parameters
Name
Type
Description
name
string
Name of the company.
ein
string
EIN of company.
irsScore
string
Based on data gathered through the US Internal Revenue Service. Can span from A (100% match) to C (EIN is not in the IRS database).
irsScoreExplanation
string
Explanation of IRS score.
dbaScore
string
Provides the information if a company name is not the legal name for the business (DBA = Doing Business As).
dbaScoreExplanation
string
Explanation of DBA score.
companyScore
number
Indicates the percentage of times the respective company name is associated with the provided EIN.
companyScoreExplnation
string
Explanation of company score.
providedStatus
string
Based on a check against the USPS National Change of Address (NCOA) database, indicates if the provided address has been verified and can be used for mailing. Can span from A (verified and NCOA Plus 4) to F (bad address and should not be mailed to).
providedstatusExplanation
string
Explanation of provided status.
confidenceScore
number
Indicates the best match, if multiple records are returned and spans from A (best match) to F (lowest scores).
confidenceScoreExplanation
string
Explanation of confidenceScore
address[]
Array of strings
Unformatted address.
formattedAddress
Object
Formatted Address.
formattedAddress parameters
Parameter
Data Type
Description
documentCategoryMatch
string
Street associated with address.
zip
string
Zip code associated with address.
state
string
State associated with address.
city
string
City associated with address.
countryCode
string
Country code associated with address.
Sample Error
Empty companyName 400
companyName not passed 400
Malformatted state 400
Malformatted ZIP 400
Upstream Error 409
Internal Server Error 500
{
    "error": {
        "name": "error",
        "message": "Internal Server Error",
        "status": 500,
        "reason": "ERROR",
        "type": "Conflict",
        "statusCode": 500
    }
}
{
    "error": {
        "name": "error",
        "message": "Internal Server Error",
        "status": 500,
        "reason": "ERROR",
        "type": "Conflict",
        "statusCode": 500
    }
}
﻿
Error Response Parameters
Parameter
Description
error
This parameter contains the error.
error.name
the error name.
error.message
the error message.
error.status
Status of the api
error.reason
Reason for error
error.type
Type of the error
error.statusCode
Request Status code from Signzy
﻿
Getting help
Please feel free to contact us if you have any questions, require clarification, or have ideas for how to make the documents or any of our services better.
You can reach out to us at [email protected]. We strive to provide prompt and reliable assistance, ensuring your queries are addressed effectively.
We value your feedback and are committed to making your experience smooth and enjoyable. Our team is dedicated to assisting you with any needs you may have. Thank you for choosing our services. We look forward to helping you!
﻿

Parameter	Data Type	Required	Description
ein	string	Yes	Required 9 digit numeric EIN(no alphabets and special characters allowed).
state	string	No	Optional state parameter to improve results(only 2 letter alphabet allowed e.g. CA).
zip	string	No	Optional zip code parameter to improve results. Zip is preferred over state(Only eithert 5 digit numeric or 5 digit numeric, followed by -, followed by 4 digit numeric allowed).
tight	boolean	No	Optional parameter to do tight matching. (Only the best match will be returned rather then all of the matches)(“true” or “false”).

Parameter	Data Type	Description
searchCompanyName	string	Company name in the input.
searchState	string	State in the input(Null if not provided).
searchZip	string	Zip in the input(Null if not provided).
searchTight	boolean	Tight parameter in the input(“true” or “false”). (false by default).
matchedEinCompanies	Array of Objects	Array of matched EIN companies.
timestamp	number	Timestamp of response.

Name	Type	Description
name	string	Name of the company.
ein	string	EIN of company.
irsScore	string	Based on data gathered through the US Internal Revenue Service. Can span from A (100% match) to C (EIN is not in the IRS database).
irsScoreExplanation	string	Explanation of IRS score.
dbaScore	string	Provides the information if a company name is not the legal name for the business (DBA = Doing Business As).
dbaScoreExplanation	string	Explanation of DBA score.
companyScore	number	Indicates the percentage of times the respective company name is associated with the provided EIN.
companyScoreExplnation	string	Explanation of company score.
providedStatus	string	Based on a check against the USPS National Change of Address (NCOA) database, indicates if the provided address has been verified and can be used for mailing. Can span from A (verified and NCOA Plus 4) to F (bad address and should not be mailed to).
providedstatusExplanation	string	Explanation of provided status.
confidenceScore	number	Indicates the best match, if multiple records are returned and spans from A (best match) to F (lowest scores).
confidenceScoreExplanation	string	Explanation of confidenceScore
address[]	Array of strings	Unformatted address.
formattedAddress	Object	Formatted Address.

Parameter	Data Type	Description
documentCategoryMatch	string	Street associated with address.
zip	string	Zip code associated with address.
state	string	State associated with address.
city	string	City associated with address.
countryCode	string	Country code associated with address.

Parameter	Description
error	This parameter contains the error.
error.name	the error name.
error.message	the error message.
error.status	Status of the api
error.reason	Reason for error
error.type	Type of the error
error.statusCode	Request Status code from Signzy

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