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Wikimedia Foundation Org

THE MISSION OF THE WIKIMEDIA FOUNDATION IS TO EMPOWER AND ENGAGE PEOPLE AROUND THE WORLD TO COLLECT AND DEVELOP EDUCATIONAL CONTENT UNDER A FREE LICENSE OR IN THE …

Wikimedia Foundation Inc

Education San Francisco, CA EIN: 200049703 (IRS) Sign up to see website
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80
Integrity Assessment
Strong transparency
80/100 · methodology

About Wikimedia Foundation Org

We support protect fund openhuman knowledge We are the nonprofit that hosts Wikipedia. We support the people, technology, and policies that enable reliable information to be shared with the world. Help us support everyone’s access to reliable information. Why donate? By the numbers Wikipedia is the backbone of the internet’s knowledge. From students to chatbots,….

Founded
Headquarters
San Francisco, CA
Foundation type
Publicly-supported charity (509(a)(2))
NTEE code
B60
IRS subsection
501(c)(03)
Ruling date
Size
major

Verified certifications

Confirmed against the issuing authority - not self-reported.

IRS Tax-Deductible since 2005

Mission

The mission of the wikimedia foundation is to empower and engage people around the world to collect and develop educational content under a free license or in the public domain and to disseminate it effectively and globally. (see schedule o)in coordination with a network of individual volunteers and our independent movement organizations, including recognized chapters, thematic organizations, user groups, and partners, the foundation provides the essential infrastructure and an organizational framework for the support and development of multilingual wikI projects and other endeavors which serve this mission. The foundation will make and keep useful information from its projects available on the internet free of charge, in perpetuity.

Focus areas & reach

· What they work on and where
📚 Education · NTEE B60
Cause tags
SDG alignment The 17 UN Sustainable Development Goals (SDGs) are the global agenda for ending poverty, protecting the planet, and ensuring prosperity by 2030. We tag each charity to the goals its work advances.

How it stacks up against peers

· vs. 8 similar education in United States
Program spending This charity: 77%
Peer average: 73%
CEO comp as % of revenue This charity: 0.43%
Peer average: 0.48%
Integrity Assessment This charity: 80
Peer average: 90

Concerns

· None found
No red flags found
Screened for IRS revocation history, Open investigations, Governance scandals, Related-party deals, Excessive exec comp.

Where every $1 goes

· FY2024 · IRS 990 (FY2024)
$0.77
Program$0.77
77% to programs beats the peer average (73%) and beats the Charity Navigator "highly efficient" threshold (75%).

GiveRadar Analysis

Original analysis from GiveRadar's dataset of comparable organizations

Based on the records currently verified by GiveRadar, Wikimedia Foundation Org has a complete profile, cross-referenced across 3 independent sources including the IRS.

  • By reported annual revenue, it is larger than 99% of the 88,739 education charities in the United States with financial records on GiveRadar. See the filings
  • It is one of the better-documented education charities in the United States GiveRadar currently tracks, because GiveRadar has verified its financial disclosures and its governance. Most of those have little verified data on record yet. View this cohort
  • It has more complete contact information than nearly all comparable charities, with a verified website, email, phone and address on record. See national comparisons
GiveRadar has verified
  • government registration
  • financial records (5 filed years)
  • disclosed leadership
  • a website
  • a contact email
  • a donation page
Not yet verified by GiveRadar
  • an owner-submitted profile claim

Analysis based on GiveRadar's benchmark dataset of 2026-07-03. It describes what GiveRadar has verified, not a judgment of the organization itself.

Common questions

· Auto-generated from filings + methodology

Wikimedia Foundation Org is a registered education nonprofit based in San Francisco, CA, United States. It is registered with the Internal Revenue Service (IRS). It was founded in 2003 and has been operating for 23 years. Its EIN is 200049703. According to GiveRadar's records, it holds active tax-deductible status on the IRS Publication 78 list, which means donations are tax-deductible and the organization is in good standing with the IRS. GiveRadar's Integrity Assessment for the organization is 80/100, which reflects how much public information is available, not whether the charity is legitimate. The organization reports $185M in annual revenue. 83 officers and directors are publicly disclosed. No red flags have been detected.

Wikimedia Foundation Org's EIN (Employer Identification Number) is 200049703. This is the organization's IRS tax identification number; you can use it to verify tax-exempt status and to look up its Form 990 filings with the IRS.

Wikimedia Foundation Org has a GiveRadar Integrity Assessment of 80/100. This score combines five components: Registration (20 pts), Financial Transparency (30 pts), Governance (20 pts), Contact Availability (10 pts), and Data Recency (20 pts), with negative adjustments for any red flags. A score of 80 ('Strong transparency') reflects well-documented governance, recent financials, named leadership, and working contact details. The charity allocates 77% of expenses to programs, which contributes positively to its score. For comparison, the average integrity assessment for education charities in United States is 90/100.

Wikimedia Foundation Org is located in San Francisco, CA, United States. The organization was established in 2003 and has been active for 23 years.

Based on official tax filings, Wikimedia Foundation Org has $185M in annual revenue. It allocates 77% of expenses to programs and services. This is in line with the average of 73% for education charities in United States. Its revenue is significantly above the peer average of $7M. Create a free GiveRadar account to view the complete financial breakdown with year-over-year trends.

Wikimedia Foundation Org is classified as an Education organization, registered in United States. It operates as a Publicly-supported charity (509(a)(2)). By size, it is categorized as a major organization. It has $185M in annual revenue. The organization has 83 disclosed officers and directors.

No red flags have been detected for Wikimedia Foundation Org. GiveRadar automatically screens charities for concerning patterns including high executive compensation, low program spending, and missing financial filings. Based on available official data, no issues have been identified.

According to GiveRadar's records, Wikimedia Foundation Org holds active tax-deductible status on the IRS Publication 78 list, which means donations are tax-deductible and the organization is in good standing with the IRS. It is registered with the Internal Revenue Service (IRS). It reports that 77% of expenses go to programs (the peer average is 73%). You can donate directly through their official donation page linked on their GiveRadar profile. GiveRadar provides data for research and does not endorse any organization. A GiveRadar Integrity Assessment reflects how much public data is available, not whether an organization is safe to donate to, so it is always smart to do your own research before giving.

We support protect fund openhuman knowledge We are the nonprofit that hosts Wikipedia. We support the people, technology, and policies that enable reliable information to be shared with the world. Help us support everyone’s access to reliable information. Why donate? By the numbers Wikipedia is the backbone of the internet’s knowledge. From students to chatbots,…. Wikimedia Foundation Org is classified as an education organization registered in United States. The organization was founded in 2003.

Among education charities registered in United States: It allocates 77% of expenses to programs, in line with the peer average of 73%. Its annual revenue of $185M is well above the peer average of $7M.

Yes, donations to Wikimedia Foundation Org are generally tax-deductible in the United States. Wikimedia Foundation Org is a 501(c)(3) tax-exempt organization. Its EIN is 200049703, which you can use for tax filing purposes. Donors can typically deduct contributions on their federal income tax return if they itemize deductions. Consult a tax professional for guidance specific to your situation.

Annual revenue
$100M-$1B
77% to programs
Source: IRS 990 (FY2024) why this matters
Unlock exact figures

Filing history

5 years on file from IRS 990 (FY2024): revenue, expenses, program spending, assets, and liabilities by fiscal year.

Years on record: FY2024, FY2023, FY2022, FY2021, FY2020.
Financial details are free - with a GiveRadar account

See 5 years of revenue, expense breakdowns, and balance sheet.

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Taxes

Tax-deductibility for donors

Donations may be tax-deductible for residents of United States under local rules. Confirm with the charity directly.

Always confirm tax treatment with the charity directly or your tax advisor before donating.

Staff & volunteers

From filings and published profiles

Employees
363

Leadership

From FY2024 filing

JA
Jaime V•••••••••
CFO

Officers & trustees (25)

Source: Public filings

See full names, roles, and stories

25 officers and trustees on file - free with a GiveRadar account.

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Latest news

From global news sources

10 articles found

From news sources and the organization. Shown for transparency; news never affects the integrity score.

Activity timeline

Filings and press mentions, merged

Small Edits, Big Impact: My Wikimedia Story - Wikimedia.org
May 2026
diff.wikimedia.org
commons-wikimedia-org-wiki-file-202847935 | - the-sun.com
May 2026
www.the-sun.com
The Wikimedia Foundation’s Latest Transparency Report - Wikimedia.org
May 2026
diff.wikimedia.org
Wikimedia Foundation Secured Government’s Commitment to User Safety, Privacy, and Content Integrity Ahead of Administrat
Apr 2026
diff.wikimedia.org
Introducing the Wikimedia Foundation’s draft FY 2026-2027 Annual Plan - Wikimedia.org
Apr 2026
diff.wikimedia.org
Building a Wikimedia research community in Ukraine: a project recap - Wikimedia.org
Apr 2026
diff.wikimedia.org
How Wikimedia Israel redesigned its website for a new era - Wikimedia.org
Apr 2026
diff.wikimedia.org
Quo Vadis, Crawlers? Progress and what’s next on safeguarding our infrastructure - Wikimedia.org
Mar 2026
diff.wikimedia.org
From Tilcara to Wikipedia: Wikimedia Argentina Strengthens Its Work with the Jujuy Community to Document the Carnival -
Mar 2026
diff.wikimedia.org
Wikimedia Foundation Bulletin 2026 Issue 4 - Wikimedia.org
Mar 2026
diff.wikimedia.org
Form filed
$185.4M revenue
FY2024
IRS 990
Form filed
$180.2M revenue
FY2023
IRS 990
Form filed
$167.9M revenue
FY2022
IRS 990
Form filed
$159.0M revenue
FY2021
IRS 990
Form filed
$124.6M revenue
FY2020
IRS 990

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Cause areas in United States

How many charities work in each area, with this charity's area highlighted.

Human Services 322,679
Education this charity 195,586
Arts & Culture 133,128
Advocacy & Civil Rights 128,026
Religion 114,636
Health 98,862
Community Development 56,086
Youth Development 53,450
See all cause areas in United States

Most common causes in United States

Causes charities work on most, with this charity's causes ticked.

Community Development 235,146
Education 159,016
Religion 103,741
Arts & Culture 101,203
Human Rights 76,926
Health 65,250
Youth Development 47,775
Animal Welfare 32,425

Sources and verification

Registration and legal identity
Internal Revenue Service (IRS) - Tax Exempt Organization Search
Financial filings
IRS Form 990 filings - Fiscal year 2024 most recent on file.
Officers and trustees
Internal Revenue Service (IRS) - Tax Exempt Organization Search - 83 disclosed in the public registry.
News and media coverage
GDELT Project + Google News

Data freshness

Last updated
Jun 12, 2026
Registry checked
Jun 6, 2026
Profile completeness
100%

What we know and don't know

Exactly which public data we hold on this charity. Our score reflects transparency, not impact.

On record · 10
  • Financial data · FY2024 on record
  • Named leadership · 83 officers on file
  • Executive pay · Disclosed
  • Government registration · Registered with an official registry
  • Mission statement · Published
  • Official website · On record
  • Headquarters address · On file
  • Direct contact · Email or phone published
  • Tax-deductibility · Verified
  • Founding date · 2003
Not available · 1
  • Programs & activities
    No named programs listed by the charity

Methodology

GiveRadar builds each profile primarily from official government charity registries, supplemented where available by third-party nonprofit databases and news archives, and combines it into a single 0-100 integrity assessment. The exact sources for this charity are listed above. We don't take a cut of any donation, ever.

Read full methodology

Are you the owner or a board member?

If you represent this organization and want to correct or update its data, you can claim this listing to edit details yourself, or email [email protected] with the correct information. We review every request and respond within 30 days.

Quick facts about Wikimedia Foundation Org

What is Wikimedia Foundation Org?
Wikimedia Foundation Org is a education publicly-supported charity (509(a)(2)) based in San Francisco, United States. We support protect fund openhuman knowledge We are the nonprofit that hosts Wikipedia. We support the people, technology, and policies that enable reliable information to be shared with the world. Help us support everyone’s access to reliable information. Why donate? By the numbers Wikipedia is the backbone of the internet’s knowledge. From students to chatbots,….
When was Wikimedia Foundation Org founded?
Wikimedia Foundation Org was founded in 2003.
Who leads Wikimedia Foundation Org?
Jaime Villagomez serves as CFO.
Where is Wikimedia Foundation Org located?
Headquartered in San Francisco, CA, United States.
What is Wikimedia Foundation Org's annual budget?
Annual revenue for fiscal year 2024 is approximately $100M-$1B. 77% of expenses go to program services.
Is Wikimedia Foundation Org trustworthy?
Wikimedia Foundation Org has a GiveRadar Integrity Assessment of 80 out of 100 (Strong transparency). The score reflects public-data transparency: registration, financial disclosure, governance, contact details, and how recently data was refreshed. It does not measure program impact.
What is Wikimedia Foundation Org's registration number?
IRS EIN: 200049703.
What is Wikimedia Foundation Org's website?
https://www.wikimediafoundation.org