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Research Tax-Exempt Organizations

WIKIMEDIA FOUNDATION INC

1 MONTGOMERY ST STE 1600, SAN FRANCISCO, CA 94104-5516 | Tax-exempt since March 2005
  • EIN: 20-0049703
  • Classification (NTEE)
    Adult, Continuing Education (Educational Institutions and Related Activities)
  • Nonprofit Tax Code Designation: 501(c)(3)
    Defined as: Organizations for any of the following purposes: religious, educational, charitable, scientific, literary, testing for public safety, fostering national or international amateur sports competition (as long as it doesn’t provide athletic facilities or equipment), or the prevention of cruelty to children or animals.
  • Donations to this organization are tax deductible.
  • More Resources: ArrowGuideStar
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Tax Filings by Year

The IRS Form 990 is an annual information return that most organizations claiming federal tax-exempt status must file yearly. Read the IRS instructions for 990 forms.

If this organization has filed an amended return, it may not be reflected in the data below. Duplicated download links may be due to resubmissions or amendments to an organization's original return.

If you would like to download Form 990 document PDFs in bulk, the Internet Archive operates a mirror of the original bulk data.

Fiscal year ending

June 2018

Fiscal year ending June

2018

PDF

990
990-T

Full Text

990 (filed on Aug. 16, 2019)

Full Filing

Raw XML

990

Form 990 documents available

Extracted filing data is not available for this tax period, but Form 990 documents are available for download.

Fiscal year ending

June 2017

Fiscal year ending June

2017

Full Text

990 (filed on June 18, 2018)

Full Filing

Raw XML

990

Total Revenue

$89,973,967

Total Functional Expenses $69,076,192
Net income $20,897,775
Notable sources of revenue Percent of total revenue
Contributions $88,816,654 98.7%
Program services $0
Investment income $1,287,010 1.4%
Bond proceeds $0
Royalties $0
Rental property income $0
Net fundraising $0
Sales of assets -$270,706
Net inventory sales $65,091 0.1%
Other revenue $75,918 0.1%
Notable expenses Percent of total expenses
Executive compensation $1,356,535 2.0%
Professional fundraising fees $249,766 0.4%
Other salaries and wages $26,493,643 38.4%
Other
Total Assets $120,524,697
Total Liabilities $7,194,500
Net Assets $113,330,197
Fiscal year ending

June 2016

Fiscal year ending June

2016

Full Text

990 (filed on Sept. 15, 2017)

Full Filing

Raw XML

990

Total Revenue

$78,691,737

Total Functional Expenses $65,061,845
Net income $13,629,892
Notable sources of revenue Percent of total revenue
Contributions $78,151,457 99.3%
Program services $25,498 0.0%
Investment income $1,089,009 1.4%
Bond proceeds $0
Royalties $0
Rental property income $0
Net fundraising $0
Sales of assets -$644,694
Net inventory sales $35,945 0.0%
Other revenue $34,522 0.0%
Notable expenses Percent of total expenses
Executive compensation $1,275,026 2.0%
Professional fundraising fees $295,878 0.5%
Other salaries and wages $24,762,700 38.1%
Other
Total Assets $97,642,735
Total Liabilities $5,859,940
Net Assets $91,782,795
Fiscal year ending

June 2015

Fiscal year ending June

2015

PDF

990
990-T

Full Text

990 (filed on July 28, 2016)

Full Filing

Raw XML

990

Total Revenue

$78,127,085

Total Functional Expenses $52,452,126
Net income $25,674,959
Notable sources of revenue Percent of total revenue
Contributions $77,451,505 99.1%
Program services $78,112 0.1%
Investment income $681,042 0.9%
Bond proceeds $0
Royalties $0
Rental property income -$9,704
Net fundraising $0
Sales of assets -$94,408
Net inventory sales $17,611 0.0%
Other revenue $2,927 0.0%
Notable expenses Percent of total expenses
Executive compensation $1,371,234 2.6%
Professional fundraising fees $246,510 0.5%
Other salaries and wages $20,333,967 38.8%
Other
Total Assets $82,753,985
Total Liabilities $4,933,687
Net Assets $77,820,298
Fiscal year ending

June 2014

Fiscal year ending June

2014

PDF

990
990-T

Full Text

990 (filed on July 6, 2015)

Full Filing

Raw XML

990

Total Revenue

$52,990,491

Total Functional Expenses $45,040,391
Net income $7,950,100
Notable sources of revenue Percent of total revenue
Contributions $52,647,756 99.4%
Program services $64,959 0.1%
Investment income $555,363 1.0%
Bond proceeds $0
Royalties $0
Rental property income -$6,726
Net fundraising $0
Sales of assets -$285,219
Net inventory sales $13,444 0.0%
Other revenue $914 0.0%
Notable expenses Percent of total expenses
Executive compensation $880,589 2.0%
Professional fundraising fees $112,449 0.2%
Other salaries and wages $15,782,887 35.0%
Other
Total Assets $60,560,774
Total Liabilities $7,085,753
Net Assets $53,475,021
Fiscal year ending

June 2013

Fiscal year ending June

2013

PDF

990
990-T

Raw XML

990

Total Revenue

$45,667,316

Total Functional Expenses $35,171,555
Net income $10,495,761
Notable sources of revenue Percent of total revenue
Contributions $45,272,234 99.1%
Program services $306,705 0.7%
Investment income $71,112 0.2%
Bond proceeds $0
Royalties $0
Rental property income -$3,363
Net fundraising $0
Sales of assets -$7,205
Net inventory sales $23,933 0.1%
Other revenue $3,900 0.0%
Notable expenses Percent of total expenses
Executive compensation $392,529 1.1%
Professional fundraising fees $271,632 0.8%
Other salaries and wages $12,738,011 36.2%
Other
Total Assets $48,146,893
Total Liabilities $2,957,769
Net Assets $45,189,124
Fiscal year ending

June 2012

Fiscal year ending June

2012

PDF

990

Raw XML

990

Total Revenue

$39,702,445

Total Functional Expenses $28,964,052
Net income $10,738,393
Notable sources of revenue Percent of total revenue
Contributions $38,990,502 98.2%
Program services $718,685 1.8%
Investment income $50,814 0.1%
Bond proceeds $0
Royalties $0
Rental property income $0
Net fundraising $0
Sales of assets -$4,899
Net inventory sales $3,722 0.0%
Other revenue -$56,379
Notable expenses Percent of total expenses
Executive compensation $412,218 1.4%
Professional fundraising fees $140,436 0.5%
Other salaries and wages $9,230,943 31.9%
Other
Total Assets $37,206,891
Total Liabilities $2,277,833
Net Assets $34,929,058
Fiscal year ending

June 2011

Fiscal year ending June

2011

PDF

990

Raw XML

990

Total Revenue

$27,191,806

Total Functional Expenses $17,540,278
Net income $9,651,528
Notable sources of revenue Percent of total revenue
Contributions $26,440,538 97.2%
Program services $819,816 3.0%
Investment income $34,559 0.1%
Bond proceeds $0
Royalties $12,857 0.0%
Rental property income $0
Net fundraising $0
Sales of assets $4,412 0.0%
Net inventory sales $0
Other revenue -$120,376
Notable expenses Percent of total expenses
Executive compensation $367,199 2.1%
Professional fundraising fees $127,636 0.7%
Other salaries and wages $5,586,203 31.8%
Other
Total Assets $26,165,567
Total Liabilities $1,973,423
Net Assets $24,192,144
Fiscal year ending

June 2010

Fiscal year ending June

2010

PDF

990

Raw XML

990

Form 990 documents available

Extracted filing data is not available for this tax period, but Form 990 documents are available for download.

Fiscal year ending

June 2009

Fiscal year ending June

2009

PDF

990

Form 990 documents available

Extracted filing data is not available for this tax period, but Form 990 documents are available for download.

Fiscal year ending

June 2008

Fiscal year ending June

2008

PDF

990

Form 990 documents available

Extracted filing data is not available for this tax period, but Form 990 documents are available for download.

Fiscal year ending

June 2007

Fiscal year ending June

2007

PDF

990

Form 990 documents available

Extracted filing data is not available for this tax period, but Form 990 documents are available for download.

Fiscal year ending

June 2006

Fiscal year ending June

2006

PDF

990

Form 990 documents available

Extracted filing data is not available for this tax period, but Form 990 documents are available for download.

Fiscal year ending

June 2005

Fiscal year ending June

2005

PDF

990
990

Form 990 documents available

Extracted filing data is not available for this tax period, but Form 990 documents are available for download.

Fiscal year ending

June 2004

Fiscal year ending June

2004

PDF

990-EZ

Form 990 documents available

Extracted filing data is not available for this tax period, but Form 990 documents are available for download.

About This Data

Nonprofit Explorer includes summary data for nonprofit tax returns and full Form 990 documents, in both PDF and digital formats.

The summary data contains information processed by the IRS during the 2012-2018 calendar years; this generally consists of filings for the 2011-2017 fiscal years, but may include older records. This data release includes only a subset of what can be found in the full Form 990s.

In addition to the raw summary data, we link to PDFs and digital copies of full Form 990 documents wherever possible. This consists of separate releases by the IRS of Form 990 documents processed by the agency, which we update regularly.

We also link to copies of audits nonprofit organizations that spent $750,000 or more in Federal grant money in a single fiscal year since 2016. These audits are copied from the Federal Audit Clearinghouse.

Which Organizations Are Here?

Every organization that has been recognized as tax exempt by the IRS has to file Form 990 every year, unless they make less than $200,000 in revenue and have less than $500,000 in assets, in which case they have to file form 990-EZ. Organizations making less than $50,000 don’t have to file either form but do have to let the IRS they’re still in business via a Form 990N "e-Postcard."

Nonprofit Explorer has organizations claiming tax exemption in each of the 27 subsections of the 501(c) section of the tax code, and which have filed a Form 990, Form 990EZ or Form 990PF. Taxable trusts and private foundations that are required to file a form 990PF are also included. Small organizations filing a Form 990N "e-Postcard" are not included in this data.

Types of Nonprofits

There are 27 nonprofit designations based on the numbered subsections of section 501(c) of the tax code. See the list »

How to Research Tax-Exempt Organizations

We've created a guide for investigating nonprofits for those just getting started as well as for seasoned pros.

API

The data powering this website is available programmatically, via an API. Read the API documentation »

Get the Data

For those interested in acquiring the original data from the source, here’s where our data comes from:

  • Raw filing data. Includes EINs and summary financials as structured data.
  • Exempt Organization profiles. Includes organization names, addresses, etc. You can merge this with the raw filing data using EIN numbers.
  • Form 990 documents requested and processed by Public.Resource.Org and ProPublica. We post bulk downloads of these documents at the Internet Archive.
  • Form 990 documents as XML files. Includes complete filing data (financial details, names of officers, tax schedules, etc.) in machine-readable format. Only available for electronically filed documents.
  • Audits. PDFs of single or program-specific audits for nonprofit organizations that spent $750,000 or more in Federal grant money in a single fiscal year. Available for 2016 and later.