California · Nonprofit
BOOK EXCHANGE OF MARIN
BOOK EXCHANGE OF MARIN (California) receives grants from 3 organizations whose IRS filings report $30,950 to it, the largest being AMERICAN ONLINE GIVING FOUNDATION INC ($15,700). 2 of them have funded it in more than one year, and 94% of the money arrives through donor-advised or pass-through sponsors rather than from an institution directly.
- Revenue FY2026
- $169k
- Funders on record
- 3
- Grants received
- $31k
- Net assets
- $311k
What Book Exchange of Marin does
Mission
The Book Exchange of Marin is a community service organization run entirely by volunteers who believe in the power of literacy to change lives. We promote child literacy, encourage a love of reading, and work to ensure that all children have access to books. Donations from our generous supporters fund classroom field trips from schools in marins most under- resourced communities to our facility, where we help each child choose a bag of free books to take home. We also provide books at little or no cost to teachers, families and to nonprofit organizations
As stated on its FY2026 Form 990-EZ.
Program
Provide books and promote literacy
$80,710 spent100% of program spending
The program described on its FY2026 Form 990-EZ. Program spending in total: $80,710.
The organization over time
Each line starts at 100 in 2025, so what you read is the shape rather than the size: 150 means half as much again as 2025, 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 2025 to 2026, from $226k to $311k (+38%).
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.
96% of BOOK EXCHANGE OF MARIN’s revenue is contributions — more donation-reliant than the typical peer (57% for the typical peer).
Surplus & reserves
Operating surplus or deficit each year, and months of liquidity in hand. 0 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
Grant support over time, funder by funder — shade shows the grant size each year.
2 of 3 of your funders are donor-advised or pass-through sponsors (tagged DAF) — 94% 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 BOOK EXCHANGE OF MARIN’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
BOOK EXCHANGE OF MARIN leans on a few funders — its largest provides 51% of grant income and the top three 100%; half comes from just 1 funder.
the vertical line marks half of all grant income — 1 funder to its left
94% 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 BOOK EXCHANGE OF MARIN.
“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
94% of BOOK EXCHANGE OF MARIN'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 $2k that is directly attributable, 100% of it comes from California funders.
Funder states come from each funder’s own filing. $29k 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
BOOK EXCHANGE OF MARIN runs a healthier operating margin than three-quarters of the 1,238 education nonprofits its size.
this organization peer median middle 50% of peers· 1,238 education nonprofits $100k–$1M, FY2026
Organizations like BOOK EXCHANGE OF MARIN
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.
Public support
99%
Share of support from the public (Schedule A) — the basis for its public-charity status.
Screen this organization
A dated, signed PDF of the compliance screen for BOOK EXCHANGE OF MARIN: 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 BOOK EXCHANGE OF MARIN?
- BOOK EXCHANGE OF MARIN (California) receives grants from 3 organizations whose IRS filings report $30,950 to it, the largest being AMERICAN ONLINE GIVING FOUNDATION INC ($15,700). 2 of them have funded it in more than one year, and 94% of the money arrives through donor-advised or pass-through sponsors rather than from an institution directly.
- How many funders does BOOK EXCHANGE OF MARIN have?
- IRS filings report 3 organizations giving $30,950 in grants to BOOK EXCHANGE OF MARIN, 2 of which have funded it in more than one year.
- Who is the largest funder of BOOK EXCHANGE OF MARIN?
- AMERICAN ONLINE GIVING FOUNDATION INC is the largest funder on record, with $15,700 in grants. The full list of funders is on this page.
- How can an organization like BOOK EXCHANGE OF MARIN 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 Book Exchange of Marin →
These figures are read directly from IRS Form 990 / 990-PF e-file XML: this organization’s own return for FY2026 (financials across 2025–2026), and the filings of 3 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