Mozilla Foundation
149 New Montgomery Street 4th Floo, San Francisco, CA · IRS data through FY2024
Revenue, expenses and net assets
Revenue Expenses Net assets
| Tax year | Revenue | Expenses | Net assets |
|---|---|---|---|
| FY2024 | $37,165,545 | $41,199,350 | $117,547,596 |
| FY2023 | $64,660,933 | $39,845,284 | $117,957,756 |
| FY2022 | $49,747,841 | $30,290,560 | $89,364,442 |
| FY2021 | $30,686,124 | $23,340,264 | $74,463,329 |
| FY2020 | $26,523,745 | $18,160,777 | $64,452,680 |
| FY2019 | $28,388,184 | $21,889,786 | $53,411,636 |
| FY2018 | $27,531,742 | $23,276,272 | $43,840,834 |
| FY2017 | $20,586,446 | $24,206,401 | $30,274,377 |
| FY2016 | $21,346,401 | $21,293,197 | $31,901,737 |
| FY2015 | $19,458,887 | $15,267,138 | $31,023,584 |
| FY2014 | $19,309,416 | $15,855,574 | $27,463,706 |
| FY2013 | $13,493,744 | $13,728,023 | $23,853,505 |
| FY2012 | $9,046,361 | $9,822,851 | $24,003,723 |
| FY2011 | $3,954,108 | $5,391,119 | $23,779,161 |
Form 990 filings
The returns filed by Mozilla Foundation (EIN 20-0097189), including Form 990 PDFs and e-file data by year, are available in ProPublica's Nonprofit Explorer. The figures on this page come from IRS data files built from those returns.
Where the revenue came from
| Source | Amount | % of revenue |
|---|---|---|
| Contributions & grants | $6,513,893 | 18% |
| Program service revenue | $23,896,509 | 64% |
| Other revenue | $6,755,143 | 18% |
Where the money was spent
| Category | Amount | % of expenses |
|---|---|---|
| Program services | $27,368,340 | 66% |
| Management & general | $10,778,764 | 26% |
| Fundraising | $3,052,246 | 7% |
What the numbers show
- Program service revenue made up 64% of total revenue in FY2024.
- Program services accounted for 66% of functional expenses, management & general 26%, and fundraising 7%.
- 66% of functional expenses went to program services in FY2024. That is higher than 10.5% of 171 Science & Technology organizations nationwide (too few in CA for a state comparison).
- Net assets covered about 34.2 months of expenses at the end of the reporting year. That puts it in the 70th percentile among 321 Science & Technology organizations in CA.
- Total revenue was higher than 96.9% of 326 Science & Technology organizations in CA.
- Total revenue rose from $3,954,108 in FY2011 to $37,165,545 in FY2024. Revenue increased in 10 and decreased in 3 of 13 year-over-year comparisons.
- Expenses exceeded revenue in 5 of 14 reported years (FY2011, FY2012, FY2013, FY2017, FY2024).
- The highest revenue on record here is $64,660,933 in FY2023.
- Net assets grew from $23,779,161 to $117,547,596 between FY2011 and FY2024.
- Contributions and grants made up 84% of revenue in FY2011 and 18% in FY2024.
- Listed in the IRS Publication 78 data as eligible to receive tax-deductible contributions (public charity).
Figures compared against other organizations of the same NTEE program area in the same state. See the methodology page for how these are calculated and the guide to reading nonprofit financials for their limits.
About this organization
PROTECT AND IMPROVE THE INTERNET AS A PUBLIC RESOURCE, OPEN AND ACCESSIBLE TO ALL.
IRS status
| Ruling year | 2004 |
| Subsection | 501(c)(3) |
| Classification | Public charity |
| Program area (NTEE) | U40 — Science & Technology (in CA) |
| Donations | Listed in the IRS Publication 78 data as eligible to receive tax-deductible contributions (public charity). |
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Source: Internal Revenue Service — Exempt Organizations Business Master File (downloaded November 4, 2026), Statistics of Income extracts, Form 990 e-file data, Publication 78 and the Automatic Revocation list. Figures are as reported by the organization; IRS processing may adjust them. This is not a charity rating and not tax advice. Confirm deductibility in IRS Tax Exempt Organization Search.
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