Private foundation · EIN 58-6403590 · Decatur, Georgia · Philanthropy & grantmaking

The@john and Mary Neff Foundation

Should you approach them?

Don't send a cold proposal. The foundation reports that it only gives to preselected organizations; an introduction through a current grantee or board member is the realistic route.

From the 2025 Form 990-PF: 3 grants paid, $2.5M total, median $450K. 33% of grants stayed in Georgia.

Accepts applications
No
per 990-PF Part XV
Grants paid, 2025
3
$2.5M
Median grant
$450K
Stays in GA
33%
of grants
Deadline
—
Assets
$1.3M

Grants paid in 2025

3 grants, all shown · from Form 990-PF Part XV

RecipientPurposeAmount
Community Foundation of Greater AtlantaAtlanta, GAEnhance the quality of life in Atlanta by providing expert philanthropic services.$1.8M
Mathmatical Assoc of AmericaWashington, DCPublic policy efforts to recruit and retain minority and female students into undergraduate mathematics and mathematics-intensive fields.$450K
Society for Science & the PublicWashington, DCTo promote the understanding and appreciation of science and the vital role it plays in human advancement: to inform, educate, and inspire.$316K

By state: Georgia 1 · District of Columbia 2

About this foundation

The@john and Mary Neff Foundation is a private grantmaking foundation in Decatur, Georgia, administered in care of Mary Muskoff Neff, tax-exempt since 2000. Private foundations must pay out roughly 5% of their assets each year, mostly as grants to 501(c)(3) public charities.

All filings on ProPublica

Does The@john and Mary Neff Foundation accept grant applications?

No. On its 2025 Form 990-PF the foundation checked that it only makes contributions to preselected organizations. Look for an introduction through a current grantee.

How much does The@john and Mary Neff Foundation give each year?

In tax year 2025 it paid $2.5M across 3 grants, a median of $450K.

Where does The@john and Mary Neff Foundation give?

Georgia (1 grants), District of Columbia (2 grants), per its latest filing.

More foundations near Decatur that accept applications

All in Georgia
FoundationBased inGrants paidMedian grantAccepts applicationsAssets
Gx Foundation Incsince 2021 Decatur, GA $863K15 grants · 2025 $50KYes $20M
Patrick Family Foundation Incsince 1989 Decatur, GA $306K49 grants · 2024 $4,750Yes $6.9M
Robert W Woodruff Foundation Incsince 1986 Atlanta, GA $190M26 grants · 2025 $1.5MYes $3.9B
Joseph B Whitehead Foundationsince 1945 Atlanta, GA $76M41 grants · 2025 $450KYes $1.8B
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