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Ohio · Private foundation

Harold & Helen McMaster Foundation Inc

Its FY2025 filing reports that it accepted unsolicited grant applications.

$254k
Granted FY2025(still arriving)
22
Grants FY2025
20
Organizations funded FY2024
55%
First-time grantees FY2024
Read the full brief
Median grant, FY2025
$7,000
Largest grant, FY2025
$70,000
Organizations funded a year
7 to 20
FY2018 to FY2024
States reached, FY2025
3
Total assets, FY2025
$3.0M
Applications
Takes unsolicited applications
Per its most recent filing; check its own site

How open it is to new grantees

In FY2024, 55% of the organizations Harold & Helen McMaster Foundation Inc funded were first-time grantees, receiving 42% of its grant dollars.

New vs renewed · share of each year

In FY2024, 58% of grant dollars renewed an existing relationship; $76k 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
EducationHuman ServicesArts & CultureAnimalsOther
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 arriving21$218k10%
FY202420$181k55%
FY202316$214k38%
FY202218$318k61%
FY20217$132k0%
FY20208$232k0%
FY201911$267k9%
FY20189$232k11%
92% classified

What it funded, over time

Every grant placed by its stated purpose and the recipient’s mission, by year, FY2017 to 2025.

Education$1.2MPublic Benefit$162kCivil Rights$71kScience & Tech$70kHuman Services$51kHealth$45kArts & Culture$44kSocial Science$11kOther$0

Top grantees

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

Show all 26 grantees

What it could do for these grantees

Plus 16 recipients with no EIN on record ($794k), not named here.

Where it is load-bearing

Each grantee by its size and the share of its budget Harold & Helen McMaster Foundation Inc supplied at peak.

25%50%75%100%$1.0M$10M$100Mgrantee revenue →↑ funder's share of their budgetDefiance College: $400,000 over 4y, 0.5% of budgetThe University of Toledo Foundation: $180,000 over 3y, 0.2% of budgetThe Ohio Foundation of Independent Colleges: $105,125 over 9y, 0.4% of budgetThe Buckeye Institute: $101,875 over 9y, 0.7% of budget1851 Center for Constitutional Law: $71,250 over 9y, 15% of budgetAshland University: $54,518 over 6y, 0.0% of budgetOregon Schools Foundation: $40,000 over 4y, 2.9% of budgetFriends of the Ashbrook Center: $36,000 over 2y, 0.4% of budgetToledo Science Center: $35,000 over 3y, 0.3% of budgetLourdes University: $25,000 over 5y, 0.0% of budgetNorthwest Ohio Classical Academy: $25,000 over 1y, 14% of budgetProject IAM Foundation Inc: $21,000 over 3y, 3.3% of budgetOwens Community College Foundation: $20,000 over 2y, 1.1% of budgetBowling Green State University Foundation Inc: $20,000 over 2y, 0.0% of budgetTutorsmart: $20,000 over 4y, 1.6% of budgetSauder Village: $19,000 over 8y, 0.1% of budgetSylvan Robotics: $14,400 over 2y, 2.7% of budgetRiverbend Equine Therapy: $10,000 over 2y, 1.0% of budgetHistoric South Initiative: $10,000 over 1y, 1.7% of budgetThe Ability Center of Greater Toledo: $9,380 over 2y, 0.1% of budgetCamp Kesem National: $6,000 over 2y, 0.0% of budgetBack to the Wild Inc: $5,250 over 2y, 0.3% of budgetLibrary Legacy Foundation of the Toledo-Lucas County Public Library: $4,000 over 2y, 0.3% 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 23.

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.

Toledo Community Foundation IncOH31.8× affinity13 shared granteesties to 11 of 11Hover any node to trace its alignments.Compare side by side →

Open a dossier: Toledo Community Foundation Inc · The O-I Charities Foundation · Promedica Health System Inc · The Oswald Supporting Organization · Tr Ua Toledo Community Foundation- Donor · United Way of Greater Toledo · Bon Secours Mercy Health Foundation · Premier Bank Foundation · The Bank of America Charitable Foundation Inc · National Philanthropic Trust · Natl Christian Charitable Fdn Inc · Donor Advised Charitable Giving Inc

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 Harold & Helen McMaster Foundation Inc with peer funders

Warm introductions · Powered by PlinthPlus

How do I get to Harold & Helen McMaster Foundation Inc?

Find your warmest path to Harold & Helen McMaster Foundation Inc 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 Harold & Helen McMaster Foundation Inc

How much does Harold & Helen McMaster Foundation Inc give?
Harold & Helen McMaster Foundation Inc reported 22 grants totaling $253,975 in its FY2025 IRS filing. It funded between 7 and 20 organizations a year over FY2018 to FY2024.
What does Harold & Helen McMaster Foundation Inc fund?
By grant dollars over FY2017 to FY2025, its largest causes are Education (53%), Public Benefit (7%), Civil Rights (3%).
Who are Harold & Helen McMaster Foundation Inc's largest grantees?
By total granted over FY2017 to FY2025: Defiance College ($400k), The University of Toledo Foundation ($180k), The Ohio Foundation of Independent Colleges ($105k).
Does Harold & Helen McMaster Foundation Inc fund new organizations?
In FY2024, 55% of the organizations it funded were first-time grantees.
Does Harold & Helen McMaster Foundation Inc accept unsolicited applications?
Its most recent filing reports that it accepts unsolicited grant applications.
Which funders back the same organizations as Harold & Helen McMaster Foundation Inc?
Its strongest co-funders, measured against what their size predicts, include Toledo Community Foundation Inc, The O-I Charities Foundation, Promedica Health System Inc.
Where is Harold & Helen McMaster Foundation Inc based?
Harold & Helen McMaster Foundation Inc is based in OH.

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 43 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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