California · Nonprofit
SONOMA BACH
SONOMA BACH (California) receives grants from 6 organizations whose IRS filings report $407,482 to it, the largest being JEWISH COMMUNITY FEDERATION OF SAN FRANCISCO THE PENINSULA MARIN & SONOMA ($224,999). 4 of them have funded it in more than one year, and 84% of the money arrives through donor-advised or pass-through sponsors rather than from an institution directly.
- Revenue FY2026
- $329k
- Funders on record
- 6
- Grants received
- $407k
- Net assets
- $169k
What Sonoma Bach does
Mission
The mission of the Sonoma Bach is to promote the performance and enjoyment of medieval, renaissance, baroque and classical music in sonoma county.
As stated on its FY2026 Form 990.
Programs
Sonoma Bach produces concerts featuring its own choirs, outstanding guest ensembles, and participates in collaborative productions, festivals, and other musical events.
$92,765 spent99% of program spendingSonoma Bach sponsors an array of educational offerings helping singers and instrumentalists to build skills.
$1,096 spent1% of program spending
The 2 programs described on its FY2026 Form 990, listed largest first by expense. Program spending in total: $93,861.
The organization over time
Each line starts at 100 in 2020, so what you read is the shape rather than the size: 150 means half as much again as 2020, 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 2021 to 2022, from $102k to $210k (+107%).
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: 2020 1% · 2021 29% · 2022 9% · 2024 7% · 2026 19%. Grants only. Government contracts and fees sit inside program revenue.
72% of SONOMA BACH’s revenue is contributions — more donation-reliant than the typical peer (64% for the typical peer).
Surplus & reserves
Operating surplus or deficit each year, and months of liquidity in hand. 4 of the last 7 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 2 funders, grant income rose $25k → $50k.
2 of 6 of your funders are donor-advised or pass-through sponsors (tagged DAF) — 84% 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 SONOMA BACH’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
SONOMA BACH leans on a few funders — its largest provides 55% of grant income and the top three 96%; half comes from just 1 funder.
the vertical line marks half of all grant income — 1 funder to its left
87% 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 SONOMA BACH.
Largest funder’s share by year: 2017 100% · 2018 100% · 2020 100% · 2021 82% · 2022 83% · 2023 50% — 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
84% of SONOMA BACH'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 $65k that is directly attributable, 92% of it comes from California funders.
Funder states come from each funder’s own filing. $342k arriving through sponsors registered in 2 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
SONOMA BACH runs a healthier operating margin than three-quarters of the 630 arts & culture nonprofits its size.
this organization peer median middle 50% of peers· 630 arts & culture nonprofits $100k–$1M, FY2026
Organizations like SONOMA BACH
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
37% of spending goes to programs.
Governance
Public support
100%
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 SONOMA BACH: 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 SONOMA BACH?
- SONOMA BACH (California) receives grants from 6 organizations whose IRS filings report $407,482 to it, the largest being JEWISH COMMUNITY FEDERATION OF SAN FRANCISCO THE PENINSULA MARIN & SONOMA ($224,999). 4 of them have funded it in more than one year, and 84% of the money arrives through donor-advised or pass-through sponsors rather than from an institution directly.
- How many funders does SONOMA BACH have?
- IRS filings report 6 organizations giving $407,482 in grants to SONOMA BACH, 4 of which have funded it in more than one year.
- Who is the largest funder of SONOMA BACH?
- JEWISH COMMUNITY FEDERATION OF SAN FRANCISCO THE PENINSULA MARIN & SONOMA is the largest funder on record, with $224,999 in grants. The full list of funders is on this page.
- How can an organization like SONOMA BACH 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 Sonoma Bach →
These figures are read directly from IRS Form 990 / 990-PF e-file XML: this organization’s own return for FY2026 (financials across 2020–2026), and the filings of 6 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 22, 2026. What this page cannot tell you · view filing