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New York · Private foundation

Korff Family Foundation

Its FY2025 filing reports that it funds preselected organizations and did not take unsolicited requests; check the foundation's own site before ruling it out.

$85k
Granted FY2025(still arriving)
32
Grants FY2025
20
Organizations funded FY2024
65%
First-time grantees FY2024
Read the full brief
Median grant, FY2025
$900
Largest grant, FY2025
$36,000
Organizations funded a year
10 to 43
FY2018 to FY2024
States reached, FY2025
7
Total assets, FY2025
$485k
Applications
Preselected organizations only
Per its most recent filing; check its own site

How open it is to new grantees

In FY2024, 65% of the organizations Korff Family Foundation funded were first-time grantees, receiving 73% of its grant dollars.

New vs renewed · share of each year

In FY2024, 27% of grant dollars renewed an existing relationship; $38k went to new ones.

50%100%’18’19’20’21’22’23’24
RenewedFirst-time

Where new relationships form · theme of each grantee’s first grant

’18’19’20’21’22’23’24
InternationalEducationHuman ServicesArts & CultureHealthPhilanthropyOther
How this is measured
First-time means a grantee’s first year in the filing window; renewed means funded in an earlier year too. The renewed share climbs naturally as a portfolio matures, so the signal is a year that bucks it (a wave of new grantees). The earliest year is left-censored: relationships that predate the data read as new. Theme is the grantee’s IRS cause.
The numbers by year
Fiscal yearOrganizations fundedTo those organizationsFirst-time grantees
FY2025still arriving30$75k67%
FY202420$52k65%
FY202343$158k77%
FY202210$111k60%
FY202123$76k48%
FY202019$42k68%
FY201930$58k87%
FY201817$34k88%
89% classified

What it funded, over time

Every grant placed by its stated purpose and the recipient’s mission, by year, FY2017 to 2024.

Religion$241kInternational$98kEducation$47kPhilanthropy$46kCrime & Legal$35kCivil Rights$21kCommunity Improvement$19kHealth$18kOther$0

Where its grants go

Grant dollars by states, across the years we hold.

Which US states its grants reach

NH
MN
IL
NY
MA
PA
NJ
CT
RI
CA
CO
VA
MD
NC
DC
TX
FL

Top grantees

Largest recipients by total granted, FY2017 to FY2025, and the share of each one’s budget the grants supplied at peak.

GranteeTotal grantedYearsShare of their budget
Congregation Orach Chaim$120,1408n/a
M y Keren Hashluchim Inc$100,0001n/a
Disability Belongs$18,00040%
Jewish Foundation for Education of Women$15,20041%
United Jewish Appeal-Federation of Jewish Philanthropies of New York Inc$14,40050%
Friends of Unistream Inc$14,00023%
Yeshiva University$5,00010%
America-Israel Friendship League Inc$4,00010%
Worldwide Friends Foundation$3,96020%
Itrek Inc$3,70030%
Show all 59 grantees
All grantees of Korff Family Foundation by total granted
GranteeTotal grantedYearsShare of their budget
Congregation Orach Chaim$120,1408n/a
M y Keren Hashluchim Inc$100,0001n/a
Disability Belongs$18,00040%
Jewish Foundation for Education of Women$15,20041%
United Jewish Appeal-Federation of Jewish Philanthropies of New York Inc$14,40050%
Friends of Unistream Inc$14,00023%
Yeshiva University$5,00010%
America-Israel Friendship League Inc$4,00010%
Worldwide Friends Foundation$3,96020%
Itrek Inc$3,70030%
Trustees of Boston College$3,60020%
Providence Hebrew Day School$3,6001n/a
Jewish National Fund-Usa Inc$3,6001n/a
The Summit School$3,00010%
The Center for Jewish History Inc$2,88030%
Congregation Kehilath Jeshurun$2,1602n/a
Teach for America Inc$2,00910%
The Valerie Fund$1,8001n/a
Mount Sinai Health System Inc$1,80010%
The Law & Humanities Institute$1,80019%
American Friends of Natal Inc$1,8001n/a
Carnegie Hill Neighbors Inc$1,68520%
National Jewish Outreach Program In$1,63510%
Elluminate Inc$1,55020%
The V Foundation$1,24320%
American Friends of Magen David Adom$1,08020%
Upper East Side Hatzolah Inc$1,08030%
Lawyers Alliance for New York$1,0001n/a
The Multiple Myeloma Research Foundation Inc$1,00010%
The Legal Aid Society$1,00010%
Middle East Media and Research Institute Inc$54010%
Shir Hadash Inc$5402n/a
Best Buddies International Inc$50010%
Theatre Development Fund Inc$50010%
Naaleh High School for Girls a Nj Nonprofit Corporation$36010%
Hht Foundation$36010%
Accessibility Accelerator Inc$36010%
Students Supporting Israel$36010%
Band of Parents Inc$3601n/a
Amit Children Inc$36010%
Foundation for the Defense of Democracies Inc$3601n/a
The Harold Grinspoon Foundation$36010%
Creatives Care Network Inc$36011%
Chevra Hatzalah$3601n/a
Union Settlement Association Inc$36010%
Jewish Graduate Student Initiative$36010%
Hearts of the Father Outreach Inc$1801n/a
American Foundation for Suicide Prevention$18010%
Boston Symphony Orchestra Inc$18010%
Congregation Rodeph Sholom$1801n/a
Chabad of Yonkers Inc$1801n/a
March of Dimes Inc$18010%
Brain Tumor Foundation$1801n/a
World Ort Inc$18010%
Pulmonary Fibrosis Foundation$18010%
Horace Mann School$10510%
Summer on the Hill Inc$10010%
The New York Opportunity Network Inc Dba the Opportunity Network$10010%
Consumer Reports Inc$3610%

What it could do for these grantees

Plus 102 recipients with no EIN on record ($301k), not named here.

Where it is load-bearing

Each grantee by its size and the share of its budget Korff Family Foundation supplied at peak.

25%50%75%100%$100k$1.0M$10M$100Mgrantee revenue →↑ funder's share of their budgetDisability Belongs: $18,000 over 4y, 0.3% of budgetJewish Foundation for Education of Women: $15,200 over 4y, 0.5% of budgetUnited Jewish Appeal-Federation of Jewish Philanthropies of New York Inc: $14,400 over 5y, 0.0% of budgetFriends of Unistream Inc: $14,000 over 2y, 2.8% of budgetYeshiva University: $5,000 over 1y, 0.0% of budgetAmerica-Israel Friendship League Inc: $4,000 over 1y, 0.2% of budgetWorldwide Friends Foundation: $3,960 over 2y, 0.0% of budgetItrek Inc: $3,700 over 3y, 0.0% of budgetTrustees of Boston College: $3,600 over 2y, 0.0% of budgetThe Summit School: $3,000 over 1y, 0.0% of budgetThe Center for Jewish History Inc: $2,880 over 3y, 0.0% of budgetTeach for America Inc: $2,009 over 1y, 0.0% of budgetMount Sinai Health System Inc: $1,800 over 1y, 0.0% of budgetThe Law & Humanities Institute: $1,800 over 1y, 9.0% of budgetCarnegie Hill Neighbors Inc: $1,685 over 2y, 0.2% of budgetNational Jewish Outreach Program In: $1,635 over 1y, 0.1% of budgetElluminate Inc: $1,550 over 2y, 0.1% of budgetThe V Foundation: $1,243 over 2y, 0.0% of budgetAmerican Friends of Magen David Adom: $1,080 over 2y, 0.0% of budgetUpper East Side Hatzolah Inc: $1,080 over 3y, 0.1% of budgetThe Multiple Myeloma Research Foundation Inc: $1,000 over 1y, 0.0% of budgetThe Legal Aid Society: $1,000 over 1y, 0.0% of budgetMiddle East Media and Research Institute Inc: $540 over 1y, 0.0% of budgetBest Buddies International Inc: $500 over 1y, 0.0% of budgetTheatre Development Fund Inc: $500 over 1y, 0.0% of budgetNaaleh High School for Girls a Nj Nonprofit Corporation: $360 over 1y, 0.0% of budgetHht Foundation: $360 over 1y, 0.0% of budgetAccessibility Accelerator Inc: $360 over 1y, 0.2% of budgetStudents Supporting Israel: $360 over 1y, 0.1% of budgetAmit Children Inc: $360 over 1y, 0.0% of budgetThe Harold Grinspoon Foundation: $360 over 1y, 0.0% of budgetCreatives Care Network Inc: $360 over 1y, 0.7% of budgetUnion Settlement Association Inc: $360 over 1y, 0.0% of budgetJewish Graduate Student Initiative: $360 over 1y, 0.0% of budgetAmerican Foundation for Suicide Prevention: $180 over 1y, 0.0% of budgetBoston Symphony Orchestra Inc: $180 over 1y, 0.0% of budgetMarch of Dimes Inc: $180 over 1y, 0.0% of budgetWorld Ort Inc: $180 over 1y, 0.0% of budgetPulmonary Fibrosis Foundation: $180 over 1y, 0.0% of budgetHorace Mann School: $105 over 1y, 0.0% of budgetSummer on the Hill Inc: $100 over 1y, 0.0% of budgetThe New York Opportunity Network Inc Dba the Opportunity Network: $100 over 1y, 0.0% of budgetConsumer Reports Inc: $36 over 1y, 0.0% of budget

Tap a dot to name the grantee.

How this is measured
Share of budget is the funder’s grant in a year over the grantee’s total revenue that year, at its highest across the years we hold; revenue is from all sources. Only grantees confirmed against their own filings, whose grants do not exceed their revenue, are plotted: the largest 43.

Nonprofits that may fit its grantmaking

Co-funders

Grantmakers whose grantees overlap with this funder’s far more than size alone predicts. Closer means stronger alignment; arcs show where they also fund each other. Here they form a tightly interlocked group: most of these funders back each other's grantees too.

Jewish Communal FundNY29.9× affinity18 shared granteesties to 11 of 11Hover any node to trace its alignments.Compare side by side →

Open a dossier: Jewish Communal Fund · Combined Jewish Philanthropies of Greater Boston Inc · United Jewish Appeal-Federation of Jewish Philanthropies of New York Inc · Gs Donor Advised Philanthropy Fund for Wealth Management Inc · Jewish Community Foundation of Los Angeles · National Philanthropic Trust · Jewish Community Foundation of Greater Metrowest NJ · Morgan Stanley Global Impact Funding Trust Inc · Fjc · The Goldman Sachs Charitable Gift Fund · Vanguard Charitable Endowment Program · The Ojc Fund

How this is measured
Affinity is a Gamma-Poisson posterior co-funding rate, re-centered on the typical rate, so thin evidence shrinks toward no signal. Overlap is association, not proof of shared intent.

Compare Korff Family Foundation with peer funders

Warm introductions · Powered by PlinthPlus

How do I get to Korff Family Foundation?

Find your warmest path to Korff Family Foundation through trustees and officers whose names appear on both boards. Search for your organization and Plinth traces the shortest route it can evidence.

Each link is a name appearing on two organizations’ public IRS 990 filings, matched on that name and, where the filings support it, on location. A same-state match has geographic support, which is a second matching feature rather than confirmation that the two are one person; a cross-state one is the likeliest to be two people who share a name. Every hop shows its tier, low-confidence and distant paths are held back rather than guessed, and it is worth confirming the person before you use the introduction.

About Korff Family Foundation

How much does Korff Family Foundation give?
Korff Family Foundation reported 32 grants totaling $84,941 in its FY2025 IRS filing. It funded between 10 and 43 organizations a year over FY2018 to FY2024.
What does Korff Family Foundation fund?
By grant dollars over FY2017 to FY2025, its largest causes are Religion (40%), International (16%), Education (8%).
Who are Korff Family Foundation's largest grantees?
By total granted over FY2017 to FY2025: Congregation Orach Chaim ($120k), M y Keren Hashluchim Inc ($100k), Disability Belongs ($18k).
Does Korff Family Foundation fund new organizations?
In FY2024, 65% of the organizations it funded were first-time grantees.
Does Korff Family Foundation accept unsolicited applications?
Its most recent filing reports that it funds preselected organizations and does not take unsolicited requests. Check the foundation's own site before ruling it out.
Which funders back the same organizations as Korff Family Foundation?
Its strongest co-funders, measured against what their size predicts, include Jewish Communal Fund, Combined Jewish Philanthropies of Greater Boston Inc, United Jewish Appeal-Federation of Jewish Philanthropies of New York Inc.
Where is Korff Family Foundation based?
Korff Family Foundation is based in NY.

On method. Every financial figure here is read from IRS e-file XML, the funder’s own 990/990-PF, and from the multi-year returns of the 168 grantees we resolved, each linked to its source. Grantee outcomes are each organization’s own program-service reporting (Form 990, Part III), read as association with funding, never as caused by it. Low-confidence name matches are suppressed rather than guessed. How we build these →

How this is measured
Each figure carries one of six labels. Filed is what the funder reported on its return. Official is another government record about an organization, such as a federal award or a charity register, joined by name where no shared identifier exists. Resolved is an identity we worked out where the filing named a recipient without an EIN, kept only above a measured confidence threshold. Computed is arithmetic over those, like themes, portfolio clusters and co-funder strength. Context is a statistic about a place rather than about an organization, which is what the need overlay is: it describes the area a grantee’s address sits in, not where its work lands. Inferred is drawn by a model from text, like the partnerships read out of public news and organization websites. Each is labeled where it appears.

Generated from the IRS Form 990-PF e-file return for fiscal year 2025, released 2025. Filings run roughly 12 to 24 months behind; figures are dated accordingly.

Source object · view filing

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