What does the EIN lookup tell me?

Whether the EIN belongs to a recognised tax-exempt organization, its 501(c) subsection and foundation type, its NTEE classification, ruling date, address, and whether donations are deductible, with the basis for that answer stated: a Publication 78 listing or the master-file deductibility code.

What happens if an EIN is not found?

The API returns a 404 with tax_exempt set to false. For a donation platform that is the actionable answer: the IRS does not recognise that EIN as exempt.

How fresh is the data?

The IRS publishes both files monthly and the database is reloaded from them, so revocations and new rulings appear within the month.

Does it include financial filings?

The master file's latest reported assets, income and revenue figures are included. Full Form 990 line items are not part of this API.

DataMAINTAINED1 token / call

Nonprofits API

Verify any US nonprofit by EIN: IRS tax-exempt status and whether donations are deductible

Verify any US nonprofit in one call: whether an EIN belongs to a real, IRS-recognized tax-exempt organization, and whether donations to it are deductible — with the basis for the answer stated (listed in IRS Publication 78, or the Business Master File deductibility code). Built on the IRS's own monthly source-of-truth files: all 1,957,340 organizations in the Exempt Organizations Business Master File, cross-flagged against the 1.4 million EINs in Publication 78. Every record carries the decoded 501(c) subsection, foundation type (church, school, hospital, publicly supported charity, private foundation...), NTEE activity classification with its category, ruling date, full address, and the organization's latest reported assets, income and revenue. An EIN that is not in the master file answers tax_exempt: false — the actionable result for a donation platform, matching-gift program or grant system, not a bare error. Search 1.96M organizations by name, state, city, zip, NTEE code or category, 501(c) subsection, foundation type, deductibility or revenue range; roll up the sector by NTEE category or state with organization counts and total revenue. EINs accept the hyphenated form (53-0196605). Self-hosted dataset refreshed from the IRS monthly publication cycle — no third-party calls at request time.

Every call needs an X-Api-Key header. A free key includes 500 tokens a month, no card required. 1 token per call, so the free plan covers about 500 calls a month.

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response.json

{
  "ok": true,
  "tax_exempt": true,
  "ein": "530196605",
  "name": "AMERICAN NATIONAL RED CROSS",
  "also_known_as": "SHARED SERVICES CENTER",
  "in_care_of": null,
  "address": {
    "street": "431 18TH ST NW",
    "city": "WASHINGTON",
    "state": "DC",
    "zip": "20006-5310"
  },
  "deductible": {
    "verdict": true,
    "basis": "Listed in IRS Publication 78",
    "bmf_code": {
      "code": "1",
      "label": "Contributions are deductible"
    },
    "publication_78": {
      "listed": true,
      "codes": [
        {
          "code": "PC",
          "label": "Public charity"
        }
      ]
    }
  },
  "subsection": {
    "code": "03",
    "label": "501(c)(3)"
  },
  "foundation": {
    "code": "15",
    "label": "Organization benefitting a college or university"
  },
  "organization_type": {
    "code": "1",
    "label": "Corporation"
  },
  "exempt_status": {
    "code": "01",
    "label": "Unconditional exemption"
  },
  "ruling_date": "1938-12",
  "group_exemption": null,
  "ntee": {
    "code": "P210",
    "category": "Human Services"
  },
  "financials": {
    "as_of_tax_period": "2025-06",
    "assets": 5052941623,
    "income": 4608946426,
    "revenue": 3916983933
  }
}

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Use cases for Nonprofits API

Confirm a charity is IRS-recognised and donations are deductible before listing it on a giving platform.
Verify a nonprofit's EIN during grant applications, vendor onboarding or corporate matching programmes.
Build a searchable charity directory by name, state, NTEE category or 501(c) subsection.
Enrich donor-management records with ruling date, foundation type and the latest reported revenue and assets.

Nonprofits API endpoints

Every endpoint with its parameters and a real example response.

OpenAPI definition Postman workspace

GETData Sources
GETNonprofit Categories
GETNonprofits By State
GETRandom Nonprofits
GETSearch Nonprofits
GETVerify Nonprofit

GETData Sources

https://api-nonprofits.dataandapis.com/v1/sources

This endpoint takes no parameters.

Example request

curl "https://api-nonprofits.dataandapis.com/v1/sources" \
  -H "X-Api-Key: YOUR_API_KEY"

Example response

{
  "ok": true,
  "count": 2,
  "sources": [
    {
      "slug": "irs-eo-bmf",
      "name": "IRS Exempt Organizations Business Master File",
      "publisher": "US Internal Revenue Service",
      "licence": "US Government work - no copyright",
      "source_url": "https://www.irs.gov/charities-non-profits/exempt-organizations-business-master-file-extract-eo-bmf",
      "file_url": "https://www.irs.gov/pub/irs-soi/eo1.csv",
      "cadence": "monthly",
      "record_count": 1957340,
      "retrieved_at": "2026-08-29",
      "updated_at": "2026-08-29 05:28:12"
    },
    {
      "slug": "irs-pub78",
      "name": "IRS Publication 78 (deductible contributions list)",
      "publisher": "US Internal Revenue Service",
      "licence": "US Government work - no copyright",
      "source_url": "https://www.irs.gov/charities-non-profits/tax-exempt-organization-search-bulk-data-downloads",
      "file_url": "https://apps.irs.gov/pub/epostcard/data-download-pub78.zip",
      "cadence": "monthly",
      "record_count": 1412318,
      "retrieved_at": "2026-08-29",
      "updated_at": "2026-08-29 05:28:12"
    }
…

Show full response

{
  "ok": true,
  "count": 2,
  "sources": [
    {
      "slug": "irs-eo-bmf",
      "name": "IRS Exempt Organizations Business Master File",
      "publisher": "US Internal Revenue Service",
      "licence": "US Government work - no copyright",
      "source_url": "https://www.irs.gov/charities-non-profits/exempt-organizations-business-master-file-extract-eo-bmf",
      "file_url": "https://www.irs.gov/pub/irs-soi/eo1.csv",
      "cadence": "monthly",
      "record_count": 1957340,
      "retrieved_at": "2026-08-29",
      "updated_at": "2026-08-29 05:28:12"
    },
    {
      "slug": "irs-pub78",
      "name": "IRS Publication 78 (deductible contributions list)",
      "publisher": "US Internal Revenue Service",
      "licence": "US Government work - no copyright",
      "source_url": "https://www.irs.gov/charities-non-profits/tax-exempt-organization-search-bulk-data-downloads",
      "file_url": "https://apps.irs.gov/pub/epostcard/data-download-pub78.zip",
      "cadence": "monthly",
      "record_count": 1412318,
      "retrieved_at": "2026-08-29",
      "updated_at": "2026-08-29 05:28:12"
    }
  ]
}

GETNonprofit Categories

https://api-nonprofits.dataandapis.com/v1/nonprofits/categories

Query parameters

Parameter	Example
state	NY	Optional

Example request

curl "https://api-nonprofits.dataandapis.com/v1/nonprofits/categories?state=NY" \
  -H "X-Api-Key: YOUR_API_KEY"

Example response

{
  "ok": true,
  "count": 6,
  "categories": [
    {
      "code": "X",
      "category": "Religion-Related",
      "organizations": 15925,
      "total_revenue": 2116544637
    },
    {
      "code": "A",
      "category": "Arts, Culture & Humanities",
      "organizations": 10598,
      "total_revenue": 9067255543
    },
    {
      "code": "B",
      "category": "Education",
      "organizations": 10248,
      "total_revenue": 86583911128
    },
    {
      "code": "T",
      "category": "Philanthropy, Voluntarism & Grantmaking Foundations",
      "organizations": 9523,
      "total_revenue": 13929576548
    },
…

Show full response

{
  "ok": true,
  "count": 6,
  "categories": [
    {
      "code": "X",
      "category": "Religion-Related",
      "organizations": 15925,
      "total_revenue": 2116544637
    },
    {
      "code": "A",
      "category": "Arts, Culture & Humanities",
      "organizations": 10598,
      "total_revenue": 9067255543
    },
    {
      "code": "B",
      "category": "Education",
      "organizations": 10248,
      "total_revenue": 86583911128
    },
    {
      "code": "T",
      "category": "Philanthropy, Voluntarism & Grantmaking Foundations",
      "organizations": 9523,
      "total_revenue": 13929576548
    },
    {
      "code": "P",
      "category": "Human Services",
      "organizations": 8782,
      "total_revenue": 21913920111
    },
    {
      "code": "N",
      "category": "Recreation & Sports",
      "organizations": 5593,
      "total_revenue": 1901317550
    }
  ]
}

GETNonprofits By State

https://api-nonprofits.dataandapis.com/v1/nonprofits/states

This endpoint takes no parameters.

Example request

curl "https://api-nonprofits.dataandapis.com/v1/nonprofits/states" \
  -H "X-Api-Key: YOUR_API_KEY"

Example response

{
  "ok": true,
  "count": 6,
  "states": [
    {
      "state": "CA",
      "count": 201973,
      "deductible": 179110
    },
    {
      "state": "TX",
      "count": 153779,
      "deductible": 136140
    },
    {
      "state": "NY",
      "count": 124214,
      "deductible": 109040
    },
    {
      "state": "FL",
      "count": 113451,
      "deductible": 103765
    },
    {
      "state": "PA",
      "count": 81596,
      "deductible": 68064
…

Show full response

{
  "ok": true,
  "count": 6,
  "states": [
    {
      "state": "CA",
      "count": 201973,
      "deductible": 179110
    },
    {
      "state": "TX",
      "count": 153779,
      "deductible": 136140
    },
    {
      "state": "NY",
      "count": 124214,
      "deductible": 109040
    },
    {
      "state": "FL",
      "count": 113451,
      "deductible": 103765
    },
    {
      "state": "PA",
      "count": 81596,
      "deductible": 68064
    },
    {
      "state": "OH",
      "count": 76668,
      "deductible": 64039
    }
  ]
}

GETRandom Nonprofits

https://api-nonprofits.dataandapis.com/v1/nonprofits/random

Query parameters

Parameter	Example
amount	3	Optional

Example request

curl "https://api-nonprofits.dataandapis.com/v1/nonprofits/random?amount=3" \
  -H "X-Api-Key: YOUR_API_KEY"

Example response

{
  "ok": true,
  "count": 3,
  "results": [
    {
      "ein": "870789674",
      "name": "NUCLEAR POWER PLANT SECURITY OFFICERS OF AMERICA LOCAL ONE",
      "city": "HANCOCKS BRG",
      "state": "NJ",
      "subsection": {
        "code": "05",
        "label": "501(c)(5)"
      },
      "ntee": "Y99",
      "ntee_category": "Mutual & Membership Benefit",
      "revenue": 181151,
      "deductible": false
    },
    {
      "ein": "870789970",
      "name": "THE MASONIC BUILDING CORPORATION",
      "city": "GRISWOLD",
      "state": "CT",
      "subsection": {
        "code": "03",
        "label": "501(c)(3)"
      },
      "ntee": "Y114",
…

Show full response

{
  "ok": true,
  "count": 3,
  "results": [
    {
      "ein": "870789674",
      "name": "NUCLEAR POWER PLANT SECURITY OFFICERS OF AMERICA LOCAL ONE",
      "city": "HANCOCKS BRG",
      "state": "NJ",
      "subsection": {
        "code": "05",
        "label": "501(c)(5)"
      },
      "ntee": "Y99",
      "ntee_category": "Mutual & Membership Benefit",
      "revenue": 181151,
      "deductible": false
    },
    {
      "ein": "870789970",
      "name": "THE MASONIC BUILDING CORPORATION",
      "city": "GRISWOLD",
      "state": "CT",
      "subsection": {
        "code": "03",
        "label": "501(c)(3)"
      },
      "ntee": "Y114",
      "ntee_category": "Mutual & Membership Benefit",
      "revenue": 49293,
      "deductible": true
    },
    {
      "ein": "870790139",
      "name": "ARTS HOUSE SCHOOLS INC",
      "city": "BROOKLYN",
      "state": "NY",
      "subsection": {
        "code": "03",
        "label": "501(c)(3)"
      },
      "ntee": "A25",
      "ntee_category": "Arts, Culture & Humanities",
      "revenue": 408725,
      "deductible": true
    }
  ]
}

GETSearch Nonprofits

https://api-nonprofits.dataandapis.com/v1/nonprofits

Query parameters

Parameter	Example
category		Optional
city		Optional
deductible	true	Optional
foundation		Optional
limit	20	Optional
max_revenue		Optional
min_revenue		Optional
ntee		Optional
page	1	Optional
q	food bank	Optional
state	CA	Optional
subsection		Optional
zip		Optional

Example request

curl "https://api-nonprofits.dataandapis.com/v1/nonprofits?deductible=true&limit=20&page=1&q=food%20bank&state=CA" \
  -H "X-Api-Key: YOUR_API_KEY"

Example response

{
  "ok": true,
  "total": 61,
  "page": 1,
  "limit": 20,
  "count": 3,
  "results": [
    {
      "ein": "953135649",
      "name": "LOS ANGELES REGIONAL FOOD BANK",
      "city": "VERNON",
      "state": "CA",
      "subsection": {
        "code": "03",
        "label": "501(c)(3)"
      },
      "ntee": null,
      "ntee_category": null,
      "revenue": 273886894,
      "deductible": true
    },
    {
      "ein": "943041517",
      "name": "SAN FRANCISCO FOOD BANK",
      "city": "SAN FRANCISCO",
      "state": "CA",
      "subsection": {
        "code": "03",
…

Show full response

{
  "ok": true,
  "total": 61,
  "page": 1,
  "limit": 20,
  "count": 3,
  "results": [
    {
      "ein": "953135649",
      "name": "LOS ANGELES REGIONAL FOOD BANK",
      "city": "VERNON",
      "state": "CA",
      "subsection": {
        "code": "03",
        "label": "501(c)(3)"
      },
      "ntee": null,
      "ntee_category": null,
      "revenue": 273886894,
      "deductible": true
    },
    {
      "ein": "943041517",
      "name": "SAN FRANCISCO FOOD BANK",
      "city": "SAN FRANCISCO",
      "state": "CA",
      "subsection": {
        "code": "03",
        "label": "501(c)(3)"
      },
      "ntee": null,
      "ntee_category": null,
      "revenue": 167084763,
      "deductible": true
    },
    {
      "ein": "942418054",
      "name": "FOOD BANK CONTRA COSTA AND SOLANO",
      "city": "CONCORD",
      "state": "CA",
      "subsection": {
        "code": "03",
        "label": "501(c)(3)"
      },
      "ntee": "K310",
      "ntee_category": "Agriculture, Food & Nutrition",
      "revenue": 157214074,
      "deductible": true
    }
  ]
}

GETVerify Nonprofit

https://api-nonprofits.dataandapis.com/v1/nonprofits/{ein}

Path parameters

Parameter	Example
ein	53-0196605	Required

Example request

curl "https://api-nonprofits.dataandapis.com/v1/nonprofits/53-0196605" \
  -H "X-Api-Key: YOUR_API_KEY"

Example response

{
  "ok": true,
  "tax_exempt": true,
  "ein": "530196605",
  "name": "AMERICAN NATIONAL RED CROSS",
  "also_known_as": "SHARED SERVICES CENTER",
  "in_care_of": null,
  "address": {
    "street": "431 18TH ST NW",
    "city": "WASHINGTON",
    "state": "DC",
    "zip": "20006-5310"
  },
  "deductible": {
    "verdict": true,
    "basis": "Listed in IRS Publication 78",
    "bmf_code": {
      "code": "1",
      "label": "Contributions are deductible"
    },
    "publication_78": {
      "listed": true,
      "codes": [
        {
          "code": "PC",
          "label": "Public charity"
        }
      ]
…

Show full response

{
  "ok": true,
  "tax_exempt": true,
  "ein": "530196605",
  "name": "AMERICAN NATIONAL RED CROSS",
  "also_known_as": "SHARED SERVICES CENTER",
  "in_care_of": null,
  "address": {
    "street": "431 18TH ST NW",
    "city": "WASHINGTON",
    "state": "DC",
    "zip": "20006-5310"
  },
  "deductible": {
    "verdict": true,
    "basis": "Listed in IRS Publication 78",
    "bmf_code": {
      "code": "1",
      "label": "Contributions are deductible"
    },
    "publication_78": {
      "listed": true,
      "codes": [
        {
          "code": "PC",
          "label": "Public charity"
        }
      ]
    }
  },
  "subsection": {
    "code": "03",
    "label": "501(c)(3)"
  },
  "foundation": {
    "code": "15",
    "label": "Organization benefitting a college or university"
  },
  "organization_type": {
    "code": "1",
    "label": "Corporation"
  },
  "exempt_status": {
    "code": "01",
    "label": "Unconditional exemption"
  },
  "ruling_date": "1938-12",
  "group_exemption": null,
  "ntee": {
    "code": "P210",
    "category": "Human Services"
  },
  "financials": {
    "as_of_tax_period": "2025-06",
    "assets": 5052941623,
    "income": 4608946426,
    "revenue": 3916983933
  }
}

Where the data comes from

Source: IRS Exempt Organizations Business Master File and IRS Publication 78 (US Government works), with IRS code tables decoded.
Freshness: Reloaded from the IRS monthly releases.

One install. Every endpoint.

No proprietary SDKs needed. Any HTTP client works. Pick your language and paste.

3languages

6endpoints

RESTarchitecture

1key for all APIs

Fully typed responses — auto-completion in your IDE
Tracks the API in lockstep — new endpoints land same day
One key works across 125+ APIs on the platform

import axios from 'axios';

const { data } = await axios.get(
  'https://api-nonprofits.dataandapis.com/v1/sources',
  { headers: { 'X-Api-Key': process.env.API_KEY } }
);

Nonprofits API · X-Api-Key

Explore the endpoints

Browse request parameters and inspect live example responses.

Available Endpoints

Request Parameters

API URL

Headers

X-Api-Key

Target:

Client:

import axios from 'axios';

const url = 'https://api-nonprofits.dataandapis.com/v1/sources';
const { data } = await axios.get(url, {
  headers: { 'X-Api-Key': 'YOUR_API_KEY' }
});