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Florida · Private foundation

Tonkinson Foundation Inc

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.

$424k
Granted FY2025(still arriving)
47
Grants FY2025
44
Organizations funded FY2024
11%
First-time grantees FY2024
Read the full brief
Median grant, FY2025
$2,000
Largest grant, FY2025
$100,000
Organizations funded a year
33 to 44
FY2018 to FY2024
States reached, FY2025
7
Total assets, FY2025
$2.0M
Applications
Preselected organizations only
Per its most recent filing; check its own site

How open it is to new grantees

In FY2024, 11% of the organizations Tonkinson Foundation Inc funded were first-time grantees, receiving 4% of its grant dollars.

New vs renewed · share of each year

In FY2024, 96% of grant dollars renewed an existing relationship; $14k 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
Human ServicesAnimalsHealthArts & CultureEnvironmentEducationOther
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 arriving46$396k17%
FY202444$355k11%
FY202341$351k7%
FY202243$331k37%
FY202138$287k11%
FY202041$231k27%
FY201933$212k24%
FY201835$212k34%
99% classified

What it funded, over time

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

Education$739kHealth$733kCommunity Improvement$289kPhilanthropy$178kArts & Culture$157kAnimals$119kHuman Services$88kReligion$69kOther$0

Where its grants go

Grant dollars by states, across the years we hold.

Which US states its grants reach

MT
IL
WI
NY
MA
CA
UT
AZ
DC
OK
MS
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.

Show all 53 grantees
All grantees of Tonkinson Foundation Inc by total granted
GranteeTotal grantedYearsShare of their budget
University of Miami$242,97590%
Friends of the Underline Inc$203,00062%
The Woody Foundation Inc dba The Way Forward Foundation$121,500810%
Shelterbox USA Inc$121,04080%
Branches Inc$99,0009n/a
Zoo Miami Foundation Inc$80,63070%
Foundation for New Education Initiatives Inc$69,50090%
Rotary Foundation of Coral Gables Inc$42,660921%
The Deering Estate Foundation Inc$38,24161%
National Geographic Society$30,00020%
Clearwater Free Clinic Inc$30,00050%
Chapman Partnership Inc$26,40090%
South Florida SPCA Inc$25,22551%
South Florida Progress Foundation Inc$20,00043%
Orchestra Miami Inc$17,00091%
Love Fund Inc$15,00032%
SPECIAL OLYMPICS FLORIDA Inc$14,42630%
Miami Rescue Mission Inc$12,50090%
Actors' Playhouse Productions Inc$11,83080%
Fairchild Tropical Botanic Garden Inc$11,25050%
South Florida Pbs Inc$10,50070%
Adrienne Arsht Center Foundation Inc$10,00010%
Miami Lighthouse for the Blind and Visually Impaired Inc$9,00060%
Tropical Audubon Society Inc$8,75091%
Malta Cross Foundation International Inc$8,7501n/a
Miami Music Project Inc$8,00080%
Guitars Over Guns Organization Inc$8,00080%
Miami Chamber Music Society$7,00042%
Food for the Poor Inc$7,00060%
Knights of Columbus 6344 Corp$5,70053%
Villagers Inc$5,0001n/a
Informed Familiesthe Florida Family Partnership Inc$4,80040%
Rising Star Outreach Inc$4,32060%
Spca Inc$4,00020%
Tropic Bound Inc$3,0002n/a
American Association of the Order of St Lazarus Inc$3,00011%
Jackson Health Foundation Inc$2,50010%
Citizens for a Better South Florida Inc$2,15550%
Yellowstone Forever$2,10080%
Little Free Library$2,00220%
Jorge M Perez Art Museum of Miami-Dade County Inc$2,00020%
Lemon City Collective Inc$2,00020%
Live Like Jake Foundation Inc$2,00020%
Homestead Rodeo Association Inc$1,90020%
Chopin Foundation of the United States Inc$1,52050%
The Ministry for Hope Inc$1,00010%
St Andrews Episcopal Church$1,0001n/a
Als Therapy Development Foundation Inc$1,00010%
Friends of the Everglades Inc$62010%
Park City Historical Society$55350%
Friends of Fiu Embrace Inc$5151n/a
Voices for Children Foundation Inc$50010%
Rotary Club of Weston Inc$50010%

What it could do for these grantees

Plus 44 recipients with no EIN on record ($1.2M), not named here.

Where it is load-bearing

Each grantee by its size and the share of its budget Tonkinson Foundation Inc supplied at peak.

25%50%75%100%$100k$1.0M$10M$100Mgrantee revenue →↑ funder's share of their budgetUniversity of Miami: $242,975 over 9y, 0.0% of budgetFriends of the Underline Inc: $203,000 over 6y, 2.2% of budgetThe Woody Foundation Inc dba The Way Forward Foundation: $121,500 over 8y, 9.5% of budgetShelterbox USA Inc: $121,040 over 8y, 0.2% of budgetZoo Miami Foundation Inc: $80,630 over 7y, 0.2% of budgetFoundation for New Education Initiatives Inc: $69,500 over 9y, 0.3% of budgetRotary Foundation of Coral Gables Inc: $42,660 over 9y, 21% of budgetThe Deering Estate Foundation Inc: $38,241 over 6y, 0.8% of budgetNational Geographic Society: $30,000 over 2y, 0.0% of budgetClearwater Free Clinic Inc: $30,000 over 5y, 0.1% of budgetChapman Partnership Inc: $26,400 over 9y, 0.0% of budgetSouth Florida SPCA Inc: $25,225 over 5y, 0.9% of budgetSouth Florida Progress Foundation Inc: $20,000 over 4y, 3.4% of budgetOrchestra Miami Inc: $17,000 over 9y, 1.0% of budgetLove Fund Inc: $15,000 over 3y, 1.9% of budgetSPECIAL OLYMPICS FLORIDA Inc: $14,426 over 3y, 0.1% of budgetMiami Rescue Mission Inc: $12,500 over 9y, 0.0% of budgetActors' Playhouse Productions Inc: $11,830 over 8y, 0.1% of budgetFairchild Tropical Botanic Garden Inc: $11,250 over 5y, 0.1% of budgetSouth Florida Pbs Inc: $10,500 over 7y, 0.0% of budgetAdrienne Arsht Center Foundation Inc: $10,000 over 1y, 0.4% of budgetMiami Lighthouse for the Blind and Visually Impaired Inc: $9,000 over 6y, 0.0% of budgetTropical Audubon Society Inc: $8,750 over 9y, 0.6% of budgetMiami Music Project Inc: $8,000 over 8y, 0.1% of budgetGuitars Over Guns Organization Inc: $8,000 over 8y, 0.0% of budgetMiami Chamber Music Society: $7,000 over 4y, 1.6% of budgetFood for the Poor Inc: $7,000 over 6y, 0.0% of budgetKnights of Columbus 6344 Corp: $5,700 over 5y, 2.7% of budgetInformed Familiesthe Florida Family Partnership Inc: $4,800 over 4y, 0.3% of budgetRising Star Outreach Inc: $4,320 over 6y, 0.1% of budgetSpca Inc: $4,000 over 2y, 0.1% of budgetAmerican Association of the Order of St Lazarus Inc: $3,000 over 1y, 1.0% of budgetJackson Health Foundation Inc: $2,500 over 1y, 0.0% of budgetCitizens for a Better South Florida Inc: $2,155 over 5y, 0.4% of budgetYellowstone Forever: $2,100 over 8y, 0.0% of budgetLittle Free Library: $2,002 over 2y, 0.1% of budgetJorge M Perez Art Museum of Miami-Dade County Inc: $2,000 over 2y, 0.0% of budgetLemon City Collective Inc: $2,000 over 2y, 0.5% of budgetLive Like Jake Foundation Inc: $2,000 over 2y, 0.1% of budgetHomestead Rodeo Association Inc: $1,900 over 2y, 0.4% of budgetChopin Foundation of the United States Inc: $1,520 over 5y, 0.1% of budgetThe Ministry for Hope Inc: $1,000 over 1y, 0.0% of budgetAls Therapy Development Foundation Inc: $1,000 over 1y, 0.0% of budgetFriends of the Everglades Inc: $620 over 1y, 0.0% of budgetPark City Historical Society: $553 over 5y, 0.0% of budgetVoices for Children Foundation Inc: $500 over 1y, 0.0% of budgetRotary Club of Weston Inc: $500 over 1y, 0.1% 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 47.

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.

The Miami Foundation IncFL34.3× affinity17 shared granteesties to 11 of 11Hover any node to trace its alignments.Compare side by side →

Open a dossier: The Miami Foundation Inc · Mightycause Charitable Foundation · The Batchelor Foundation Inc · The Kirk Foundation · Dunspaugh Dalton Foundation Inc · John S and James L Knight Foundation · Peacock Foundation Inc · Greater Miami Jewish Federation Inc · Key Biscayne Community Foundation Inc · Westminster Barrington Foundation · United Way Miami Inc · Goldsmith Family Foundation 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 Tonkinson Foundation Inc with peer funders

Warm introductions · Powered by PlinthPlus

How do I get to Tonkinson Foundation Inc?

Find your warmest path to Tonkinson 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 Tonkinson Foundation Inc

How much does Tonkinson Foundation Inc give?
Tonkinson Foundation Inc reported 47 grants totaling $424,323 in its FY2025 IRS filing. It funded between 33 and 44 organizations a year over FY2018 to FY2024.
What does Tonkinson Foundation Inc fund?
By grant dollars over FY2017 to FY2025, its largest causes are Education (28%), Health (27%), Community Improvement (11%).
Who are Tonkinson Foundation Inc's largest grantees?
By total granted over FY2017 to FY2025: University of Miami ($243k), Friends of the Underline Inc ($203k), The Woody Foundation Inc dba The Way Forward Foundation ($122k).
Does Tonkinson Foundation Inc fund new organizations?
In FY2024, 11% of the organizations it funded were first-time grantees.
Does Tonkinson Foundation Inc 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 Tonkinson Foundation Inc?
Its strongest co-funders, measured against what their size predicts, include The Miami Foundation Inc, Mightycause Charitable Foundation, The Batchelor Foundation Inc.
Where is Tonkinson Foundation Inc based?
Tonkinson Foundation Inc is based in FL.

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 100 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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