Challenge Grants for Nonprofits

GrantStation’s exclusive database features 288 active funding opportunities giving this type of support, all accepting requests from new grantseekers!

With a membership, you’ll gain instant access to our full directory of 15,000+ funders and powerful tools to find, track, and secure the best grants for your mission. Maximize your grant success today with our expertly curated funder database, step-by-step grant writing resources, and industry-leading online education.

Seawell Elam Foundation

Application Deadline:
  • Proposal letters: May 22, 2026
  • Grant applications: September 25, 2026
Grant Range:
$10000 - $15000
Average Grant:
$11833

The mission of the Seawell Elam Foundation is to improve the quality of life for those living in Austin, TX, and the surrounding communities by funding nonprofit organizations that …

Weldon F. Osborne Foundation

Application Deadline:
  • Letters of inquiry: none
  • Applications: January 31, May 31, and September 30, annually

The Weldon F. Osborne Foundation primarily supports nonprofit organizations in the Chattanooga, TN, area.

The Foundation's areas of interest include:

  • arts and culture;

Martha-Ellen Tye Foundation

Application Deadline:

March 1, June 1, September 1, and December 1, annually

Grant Range:
$1000 - $250000
Average Grant:
$10000 - $20000

The Martha-Ellen Tye Foundation supports nonprofit organizations that are striving to make a better life for the people of Marshalltown, IA, and the surrounding area.

The Foundation seeks…

Gulf Coast Medical Foundation

Application Deadline:

March 1, June 1, September 1, and December 1, annually

Grant Range:
$171 - $100000
Average Grant:
$24121

The Gulf Coast Medical Foundation provides support for nonprofit organizations in Fort Bend, Matagorda, and Wharton counties in Texas.

The Foundation's focus areas include:

Cherokee Preservation Foundation

Application Deadline:

The first Monday in June and December, annually

Grant Range:
$0 - $0

The Cherokee Preservation Foundation supports organizations serving the Qualla Boundary and Cherokee, Clay, Graham, Haywood, Jackson, Macon, and Swain counties in North Carolina.

Areas of…

Sarkeys Foundation

Application Deadline:

Letters of inquiry: June 1 and December 1, annually
Invited applications: February 1 and August 1, annually

The mission of the Sarkeys Foundation is to improve the quality of life in Oklahoma.

The Foundation's major areas of support include:

  • education;
  • social service and…

CoVantage Cares Foundation

Application Deadline:

The first working day of March, June, September, and December, annually

Grant Range:
$7500 - $118378
Average Grant:
$44074

The CoVantage Cares Foundation, the philanthropic program of CoVantage Credit Union, supports nonprofit organizations located in communities the Credit Union serves.

These communities…

Mabee Foundation

Application Deadline:

The first business day in March, June, September and December, annually

Grant Range:
$9075 - $2500000
Average Grant:
$759629

The Mabee Foundation provides funding for a wide range of nonprofit organizations in Arkansas, Kansas, Missouri, New Mexico, Oklahoma, and Texas.

The Foundation supports organizations or…