California · Nonprofit
Windcall Institute
Windcall Institute (California) receives grants from 17 organizations whose IRS filings report $1,607,740 to it, the largest being THE CALIFORNIA WELLNESS FOUNDATION ($425,000). 7 of them have funded it in more than one year.
- Revenue FY2025
- $887k
- Funders on record
- 17
- Grants received
- $1.6M
- Net assets
- $730k
What Windcall Institute does
Mission
Windcall is dedicated to nurturing and developing transformative learning and resilient leadership among community and labor organizers engaged in social justice for low-income communities and communities of color.
As stated on its FY2025 Form 990.
Program
Windcall provides two main programming services: Residencies and Staying Power. With Residencies, we provided immersive rest retreats and healing justice programming including a rigorous selection and intake process, 2 orientations, 2 debriefs, and 2 self-guided curricula for 45 participants with 16 site hosts, 4 chefs, 2 coordinators at 16 retreat sites, and 26 practitioners, including coaches, providing support to our residents. With Staying Power, we provided an ongoing community of practice with 4 quarterly healing justice webinars for 261 registrants, 2 in-person healing justice workshops for 23 electoral organizers, and 3 webinars for 24 fee-for-service client participants.
$609,410 spent100% of program spending
The program described on its FY2024 Form 990. Program spending in total: $609,410.
The organization over time
Each line starts at 100 in 2024, so what you read is the shape rather than the size: 150 means half as much again as 2024, 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.
Balance sheet
Total assets and total liabilities at each year end, in dollars. The largest one-year move in total assets was 2024 to 2025, from $842k to $765k (−9%).
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.
100% of Windcall Institute’s revenue is contributions — more donation-reliant than the typical peer (99% for the typical peer).
Surplus & reserves
Operating surplus or deficit each year, and months of liquidity in hand. 1 of the last 2 reported years ran a deficit.
reserve
Leadership and staff
The officers, directors, trustees and key employees listed on each return. Joined and no longer listed compare each filing with the year before, matching people by surname and first initial; a year after a gap, or a roster under three people, has no comparison.
Who funds it, year by year
2017 → 2023: the base broadened from 1 funder to 4 funders, grant income rose $5k → $255k.
8 of 17 of your funders are donor-advised or pass-through sponsors (tagged DAF) — 24% 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 Windcall Institute’s funders (the co-funder graph). 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
Windcall Institute has a broad base — no single funder exceeds 26% of grant income, and it takes 4 funders to reach half.
the vertical line marks half of all grant income — 4 funders to its left
34% 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 Windcall Institute.
Largest funder’s share by year: 2017 100% · 2018 98% · 2020 53% · 2021 100% · 2022 100% · 2023 39% — diversifying over time.
“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.
Where its funders are
87% of Windcall Institute's grant income comes from California funders.
In-state vs out-of-state, by year
Funder states come from each funder’s own filing. $380k arriving through sponsors registered in 5 states is 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.
Against its field
Windcall Institute's funding base is broadening — from 1 funders to 4 as grant income climbed.
this organization peer median middle 50% of peers· 904 civil rights nonprofits $100k–$1M, FY2025
Organizations like Windcall Institute
Organizations whose mission and program text most resemble this one, by semantic similarity over every organization in the 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
66% of spending goes to programs.
Governance
Public support
0%
Share of support from the public (Schedule A) — the basis for its public-charity status.
Footprint & structure
Files a return copy in 1 state
Screen this organization
A dated, signed PDF of the compliance screen for Windcall 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. Screen this nonprofit · How the screen works · on the API as GET /api/screening/{ein}?format=pdf
Questions and answers
- Who funds Windcall Institute?
- Windcall Institute (California) receives grants from 17 organizations whose IRS filings report $1,607,740 to it, the largest being THE CALIFORNIA WELLNESS FOUNDATION ($425,000). 7 of them have funded it in more than one year.
- How many funders does Windcall Institute have?
- IRS filings report 17 organizations giving $1,607,740 in grants to Windcall Institute, 7 of which have funded it in more than one year.
- Who is the largest funder of Windcall Institute?
- THE CALIFORNIA WELLNESS FOUNDATION is the largest funder on record, with $425,000 in grants. The full list of funders is on this page.
- How can an organization like Windcall 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.
Play a game about who funds Windcall Institute →
These figures are read directly from IRS Form 990 / 990-PF e-file XML: this organization’s own return for FY2025 (financials across 2024–2025), and the filings of 17 funders 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 October 14, 2026. What this page cannot tell you · view filing