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Mozilla Foundation

EIN 20-0097189 · San Francisco, CA

Public records show a registered, tax-exempt organization in good standing.

LegitimacyPassesRegistration and standingFinancial healthFair67 out of 100GovernanceStrong100 out of 100Impact evidenceDescribes programsHow well its results are evidenced

What it says it does

MOZILLA FOUNDATION WORKS WITH A BROAD MOVEMENT OF PEOPLE, PROJECTS, AND ORGANIZATIONS TO PROTECT AND IMPROVE THE INTERNET AS A PUBLIC RESOURCE. WE STRIVE TO KEEP THE INTERNET OPEN AND ACCESSIBLE TO ALL, AND TO PROMOTE MORE TRUSTWORTHY TOOLS, INNOVATION, AND PRACTICES ONLINE.

Income
$37.2 million
Spending
$41.2 million
Spent on programs
66%
Reserves
33.6 months of spending
Largest source of income
fees for its services, 64%
Employees
73
Volunteers
10,000
Highest pay
$6.1 million, paid only by a related for-profit

Source: Form 990 for the year ending December 31, 2024, filed with the Internal Revenue Service. Rating method 2026.2. How we rate

Financial health

Fair: 67 out of 100. Higher than 41% of charities in its peer group (science, $10m to $100m).

  • Reserves

    35 of 35

    Spendable reserves would cover 33.6 months of spending.

  • Debt

    20 of 20

    It owes 5% of what it owns.

  • Living within its means

    4 of 15

    Spending exceeded income by 11% of income.

  • Income trend

    0 of 15

    Income fell 46% on the year before.

  • Spending floor

    8 of 15

    66% of spending went to programs and raising each dollar of donations cost 47 cents.

Source: Form 990 for the year ending December 31, 2024, filed with the Internal Revenue Service. Rating method 2026.2. How we rate

Governance

Strong: 100 out of 100. Higher than 47% of charities in its peer group (science, $10m to $100m).

  • Independent board

    25 of 25

    8 of 10 voting board members are independent.

  • Conflict of interest policy

    15 of 15

    Has a written conflict of interest policy.

  • Whistleblower policy

    8 of 8

    Has a written whistleblower policy.

  • Record keeping policy

    7 of 7

    Has a written policy on keeping and destroying records.

  • Board minutes

    5 of 5

    Keeps minutes of board meetings.

  • Board sees the tax return

    10 of 10

    Gave the board a copy of this return before filing it.

  • Pay set independently

    5 of 5

    Sets its chief executive's pay through independent review and comparison.

  • Independent check of accounts

    15 of 15

    Its accounts were audited by an independent accountant.

  • No reported misuse

    10 of 10

    Reports no diversion of assets, excess benefits or loans to insiders.

Source: Form 990 for the year ending December 31, 2024, filed with the Internal Revenue Service. Rating method 2026.2. How we rate

Impact evidence

Describes programs. Its tax return describes what it does but we have found no measurable results in it.

Programs described in its return (4)
  1. $750,102 spent. AGENDA SETTING MOZILLA RESEARCHES ISSUES AT THE INTERSECTION OF TECHNOLOGY AND SOCIETY AND THEN PROPELS THEM INTO THE PUBLIC CONVERSATION. IN 2024, MOZILLA PROVIDED RESEARCH, COMMENTARY, AND ANALYSIS ON TOPICS LIKE OPENNESS IN AI, THE ENVIRONMENTAL IMPACTS OF AI, PROTECTING CONSUMER PRIVACY, AND UPHOLDING ONLINE INFORMATION INTEGRITY ON MAJOR PLATFORMS. IN 2024, MOZILLA SPENT $750,102 TO SUPPORT ITS AGENDA-SETTING WORK.
  2. $11.0 million spent. LEADERSHIP DEVELOPMENT MOZILLA SUPPORTS PEOPLE AND PROJECTS MAKING AI MORE TRUSTWORTHY AND THE INTERNET HEALTHIER. IN 2024, MOZILLA WELCOMED SEVERAL NEW FELLOWS AND AWARDEES WORKING AT THE INTERSECTION OF AI AND CLIMATE JUSTICE, PUBLIC POLICY, ETHICS, ART, AND A RANGE OF OTHER TOPICS. IN 2024, MOZILLA SPENT $10,984,792 TO SUPPORT ITS LEADERSHIP DEVELOPMENT WORK.
  3. $15.6 million spent. MOVEMENT BUILDING MOZILLA FUELS THE MOVEMENT FOR A BETTER INTERNET, BUILDING BRIDGES BETWEEN DIGITAL RIGHTS ACTIVISTS, OPEN-SOURCE CHAMPIONS, AND OTHER COMMUNITIES. IN 2024, MOZILLA PUBLISHED OUR * PRIVACY NOT INCLUDED GUIDE WITH A FOCUS ON PRIVACY IN DATING APPS, AS WELL AS AI CHATBOTS, PUBLISHED A RANGE OF PETITIONS AND OPEN LETTERS ABOUT PLATFORM TRANSPARENCY, AND HELD SIGNATURE MOZFEST CONVENINGS IN THE NETHERLANDS AND ZAMBIA. IN 2024, MOZILLA SPENT $15,633,446 TO SUPPORT ITS MOVEMENT-BUILDING WORK.
  4. TRADEMARK LICENSE FEES.

Source: Form 990 for the year ending December 31, 2024, filed with the Internal Revenue Service. Rating method 2026.2. How we rate

Legitimacy checks

  1. Is it registered with the IRS? Passed.

    Listed in the IRS master file of tax-exempt organizations as a 501(c)(3) charitable organization.

    Source: Exempt Organizations Business Master File, Internal Revenue Service, file dated September 7, 2026.

  2. Has the IRS revoked its tax-exempt status? Passed.

    Not on the IRS automatic revocation list.

    Source: Automatic revocation of exemption list, Internal Revenue Service, file dated September 30, 2026.

  3. Are donations tax-deductible? Passed.

    On the IRS list of organizations eligible to receive tax-deductible contributions.

    Source: Publication 78 data: organizations eligible for tax-deductible contributions, Internal Revenue Service, file dated September 10, 2026.

  4. Is it keeping up with its IRS filings? Passed.

    Most recent return on file covers the year ending December 2024.

    Source: Exempt Organizations Business Master File, Internal Revenue Service, file dated September 7, 2026.

  5. How long has it been tax-exempt? Passed.

    Recognized by the IRS since June 2004.

    Source: Exempt Organizations Business Master File, Internal Revenue Service, file dated September 7, 2026.

  6. Is it in good standing with state regulators? Passed.

    Not on California's list of charities barred from soliciting. Other states are not yet checked.

    Source: May Not Operate or Solicit for Charitable Purposes list, California Attorney General, Registry of Charities and Fundraisers, file dated October 7, 2026.

Ratings and checks are our reading of public records, using the published method. They are not a statement about anyone's honesty. If you work for this organization, you can send corrections or results, confirm you want gifts through Veridonate, or ask to be removed from giving.