California · Nonprofit
The Breakthrough Institute
The Breakthrough Institute (California) receives grants from 37 organizations whose IRS filings report $28,579,921 to it, the largest being Vanguard Charitable Endowment Program ($9,301,000). 24 of them have funded it in more than one year, and 56% of the money arrives through donor-advised or pass-through sponsors rather than from an institution directly.
Against its field
The Breakthrough Institute's revenue grew 101% between 2017 and 2025.
this organization peer median middle 50% of peers· 881 environment nonprofits $1M–$10M, FY2025
Three funders worth looking at
Grantmakers with no record of funding this organization, ranked by how strongly the co-funder graph and the mission embeddings agree. The evidence is in section 03.
- Democracy Fund Incshared funders
- International Sustainable Energy Foundationportfolio match
- Caldera Foundationportfolio match
The organization over time
Each line starts at 100 in 2017, so what you read is the shape rather than the size: 150 means half as much again as 2017, 50 means half. The number beside each label in the key is where it ended. The shaded band is where the middle 50% of its peers' revenue would sit, given their growth.
How it's funded, over time
Each bar is one year's revenue split into where it came from, and every bar is the same height — these are shares, not amounts, so a year that raised twice as much looks the same size. Hover a bar for the split.
Government-grant reliance: 2021 5%. Grants only. Government contracts and fees sit inside program revenue.
91% of The Breakthrough Institute’s revenue is contributions — more donation-reliant than the typical peer (88% for the typical peer).
Surplus & reserves
Operating surplus or deficit each year, and months of liquidity in hand. 2 of the last 9 reported years ran a deficit.
reserve
Who funds it, year by year
2017 → 2023: the base broadened from 7 funders to 18 funders, grant income rose $1.5M → $5.0M.
12 of 37 of your funders are donor-advised or pass-through sponsors (tagged DAF) — 56% of grant dollars received. That money is really individual donors directing a sponsor; the institutions to cultivate are the non-DAF funders.
From the IRS filings of The Breakthrough Institute’s funders (the co-funder graph). Top 30 of 37 funders by total. Association, not causation. Trends are read to FY2023, the last fiscal year that has finished arriving. FY2024–FY2026 are still being filed and are shown unshaded; they do not move any figure on this page.
How concentrated its funding is
The Breakthrough Institute has a broad base — no single funder exceeds 33% of grant income, and it takes 3 funders to reach half.
the vertical line marks half of all grant income — 3 funders to its left
68% of the income these shares are computed over arrives through pass-through sponsors or from payers whose filings do not say what kind of payment it is. Concentration is still measured over all of it, because the money is real; what it does not support is a claim about how many institutions have chosen to fund The Breakthrough Institute.
Largest funder’s share by year: 2017 37% · 2018 46% · 2019 41% · 2020 38% · 2021 37% · 2022 37% · 2023 36% — broadly stable.
“Effective funders” = inverse Herfindahl index (1 / Σ shareᵢ²) — the number of equal-sized funders that would give the same concentration. Trends are read to FY2023, the last fiscal year that has finished arriving. FY2024–FY2026 are still being filed and are shown unshaded; they do not move any figure on this page.
How long its funders stay
55% of The Breakthrough Institute's funders are still giving 3 years after their first grant; 65% give in more than one year at all.
Share of funders still giving k years after their first recorded grant, pooled across every acquisition cohort. A funder counts as retained in a year only if it made a grant that year. Measured to FY2023, the last fiscal year that has finished arriving — a funder cannot be counted as lapsed in a year most filers have not reached.
Where its funders are
56% of The Breakthrough Institute's grant income arrives through donor-advised or pass-through sponsors, whose addresses record where the money is held rather than where the donor is. Of the $13M that is directly attributable, 79% of it comes from funders outside California, across 13 states.
In-state vs out-of-state, by year
Funder states come from each funder’s own filing. $16M arriving through sponsors registered in 6 statesis excluded from the map and the split above: a sponsor holds money on a donor’s behalf, so its registered address would place those dollars somewhere no donor need ever have been. Trends are read to FY2023, the last fiscal year that has finished arriving. FY2024–FY2026 are still being filed and are shown unshaded; they do not move any figure on this page.
Funders to approach
Grantmakers that don’t fund you yet, surfaced two ways: they back organizations that share your funders, or their grantees resemble your mission. The ones both signals agree on come first. Your 37 funders put you under-funded among the 400 organizations that share them.
- Democracy Fund Incshared fundersDC · backs 66 organizations that share your funders
- International Sustainable Energy Foundationportfolio matchits grantees resemble your mission
- Caldera Foundationportfolio matchits grantees resemble your mission
- Advocates for Climate Innovationportfolio matchits grantees resemble your mission
- The Jeremy and Hannelore Grantham Environmental Trustportfolio matchits grantees resemble your mission
- Clean Air Task Force Incportfolio matchits grantees resemble your mission
- Co2 Foundationportfolio matchits grantees resemble your mission
- Climate Imperative Foundationportfolio matchits grantees resemble your mission
- Planet Home Charitable Foundationportfolio matchits grantees resemble your mission
- Freedom Together Foundationshared fundersNY · backs 102 organizations that share your funders
- The Heising-Simons Foundationshared fundersCA · backs 110 organizations that share your funders
- The Energy Foundationshared fundersCA · backs 61 organizations that share your funders
From the co-funder graph (funders backing at least two comparable organizations, shrunk for grantee count, donor-advised and mega-funds excluded) and the universe embeddings. A research starting point; overlap is association, not a guarantee of fit.
Organizations like The Breakthrough Institute
Nonprofits whose mission and program text most resemble this one, by semantic similarity over the universe of US filings — the closest peers, and often the clearest route to shared or prospective funders.
In California
Nationally
Read directly from this organization’s own Form 990, as neutral context.
Where the money goes
83% of spending goes to programs.
Governance
Public support
86%
Share of support from the public (Schedule A) — the basis for its public-charity status.
Footprint & structure
Files a return copy in 26 states
Screen this organization
A dated, signed PDF of the compliance screen for The Breakthrough Institute: IRS status (Business Master File, Publication 78, auto-revocation), the OFAC sanctions lists, the Internal Revenue Bulletin, and California registration, with the Rev. Proc. 2018-32 §8.01 reliance elements stated element by element. Generated from the current files at the moment you download it.
Screens are triage, not determinations; a source that cannot be read reports not screened, never clear. How the screen works · on the API as GET /api/screening/{ein}?format=pdf
Questions and answers
- Who funds The Breakthrough Institute?
- The Breakthrough Institute (California) receives grants from 37 organizations whose IRS filings report $28,579,921 to it, the largest being Vanguard Charitable Endowment Program ($9,301,000). 24 of them have funded it in more than one year, and 56% of the money arrives through donor-advised or pass-through sponsors rather than from an institution directly.
- How many funders does The Breakthrough Institute have?
- IRS filings report 37 organizations giving $28,579,921 in grants to The Breakthrough Institute, 24 of which have funded it in more than one year.
- Who is the largest funder of The Breakthrough Institute?
- Vanguard Charitable Endowment Program is the largest funder on record, with $9,301,000 in grants. The full list of funders is on this page.
- How can an organization like The Breakthrough Institute find more funders?
- Start with the funders already giving here, then look at the foundations that back similar organizations in California. The funding by cause and by state pages list the largest funders for a given area and how to approach them.
These figures are read directly from IRS Form 990 / 990-PF e-file XML: this organization’s own return for FY2025 (financials across 2017–2025), and the filings of 37funders that report grants to it. “On record” means captured in the filings we have parsed — a funder that does not e-file, or whose grant detail is not itemized, will not appear. Filings run roughly 12–24 months behind. Trends on this page end at FY2023, the last fiscal year that has finished arriving; later years are shown and marked, and move no figure. Data on this page was exported August 27, 2026. What this page cannot tell you · view filing