The Idaho State Capitol

Private foundations Boise, IDtax years 2023 to 2025

Private foundations in Boise, ID

135 private foundations based in Boise, ID filed a 990-PF in the last two years. In their latest returns they gave $90.2 million in 1,497 grants, and 28 say they accept applications.

Foundations with a return in the last two years, each by its latest return (tax years 2023 to 2025), read from the IRS e-file on Nov 11, 2026. Returns reach the IRS 5 to 18 months after the year they describe.

Largest givers

By grants paid, latest return
  1. Ja & Kathryn Albertson Foundation IncBoise, ID · tax year 2024 44 grants Accepts applications $27,646,262 giving
  2. Islands FundBoise, ID · tax year 2024 81 grants Preselected only $16,231,597 giving
  3. Jr Simplot Foundation IncBoise, ID · tax year 2024 25 grants Preselected only $4,602,227 giving
  4. Micron Technology Foundation IncBoise, ID · tax year 2025 8 grants Preselected only $4,463,685 giving
  5. Idaho Elks Rehab Hospital IncBoise, ID · tax year 2024 7 grants Accepts applications $4,222,026 giving
  6. Simplot Company Foundation IncBoise, ID · tax year 2025 136 grants Preselected only $3,751,313 giving
  7. Larry and Marianne Williams Family FoundationBoise, ID · tax year 2024 46 grants Preselected only $2,807,125 giving
  8. Dallas and Alta Harris Family Foundation IncBoise, ID · tax year 2024 44 grants Preselected only $2,344,253 giving
  9. Hansberger FoundationBoise, ID · tax year 2024 25 grants Accepts applications $1,915,000 giving
  10. The Edward and Barbara Hulac Charitable Foundation IncBoise, ID · tax year 2024 2 grants Accepts applications $1,716,929 giving
  11. Harold E & Phyllis S Thomas FoundationBoise, ID · tax year 2024 35 grants Accepts applications $1,599,490 giving
  12. The Rebholtz Family Foundation IncBoise, ID · tax year 2024 7 grants Preselected only $1,500,000 giving
  13. Viets Family Charitable TrustBoise, ID · tax year 2025 Grants listed in an attachment (not in the e-file) Preselected only $1,400,000 giving
  14. S R Simplot Foundation IncBoise, ID · tax year 2025 5 grants Preselected only $1,320,000 giving
  15. The Borbonus Family Foundation IncBoise, ID · tax year 2025 14 grants Preselected only $1,143,511 giving
  16. Harry W Morrison Foundation IncBoise, ID · tax year 2024 Grants listed in an attachment (not in the e-file) Accepts applications $885,600 giving
  17. Idaho Power Foundation IncBoise, ID · tax year 2025 110 grants Accepts applications $679,200 giving
  18. Morrison Center Endowment Foundation IncBoise, ID · tax year 2024 9 grants Accepts applications $678,830 giving
  19. Steiner Family FoundationBoise, ID · tax year 2024 9 grants Preselected only $660,000 giving
  20. Bates Family Foundation IncBoise, ID · tax year 2025 15 grants Preselected only $650,000 giving
  21. Dove FoundationBoise, ID · tax year 2024 7 grants Preselected only $645,361 giving
  22. The Hop & Mae Adams FoundationBoise, ID · tax year 2024 7 grants Preselected only $579,088 giving
  23. The Julius C Jeker Foundation IncBoise, ID · tax year 2024 23 grants Preselected only $558,500 giving
  24. Morrison Knudsen Foundation IncBoise, ID · tax year 2025 10 grants Accepts applications $550,192 giving
  25. The Pesky Family Foundation IncBoise, ID · tax year 2024 61 grants Accepts applications $505,447 giving

Foundations that accept applications

Largest first

The return gives an application contact and does not check the preselected-only box.

  1. Ja & Kathryn Albertson Foundation IncBoise, ID · tax year 2024 44 grants Accepts applications $27,646,262 giving
  2. Idaho Elks Rehab Hospital IncBoise, ID · tax year 2024 7 grants Accepts applications $4,222,026 giving
  3. Hansberger FoundationBoise, ID · tax year 2024 25 grants Accepts applications $1,915,000 giving
  4. The Edward and Barbara Hulac Charitable Foundation IncBoise, ID · tax year 2024 2 grants Accepts applications $1,716,929 giving
  5. Harold E & Phyllis S Thomas FoundationBoise, ID · tax year 2024 35 grants Accepts applications $1,599,490 giving
  6. Harry W Morrison Foundation IncBoise, ID · tax year 2024 Grants listed in an attachment (not in the e-file) Accepts applications $885,600 giving
  7. Idaho Power Foundation IncBoise, ID · tax year 2025 110 grants Accepts applications $679,200 giving
  8. Morrison Center Endowment Foundation IncBoise, ID · tax year 2024 9 grants Accepts applications $678,830 giving
  9. Morrison Knudsen Foundation IncBoise, ID · tax year 2025 10 grants Accepts applications $550,192 giving
  10. The Pesky Family Foundation IncBoise, ID · tax year 2024 61 grants Accepts applications $505,447 giving
  11. The Smelek Family Foundation IncBoise, ID · tax year 2024 Grants listed in an attachment (not in the e-file) Accepts applications $431,129 giving
  12. Four J FoundationBoise, ID · tax year 2025 50 grants Accepts applications $400,500 giving
  13. The Hawkins Family FoundationBoise, ID · tax year 2025 23 grants Accepts applications $387,500 giving
  14. Obsidian Foundation IncBoise, ID · tax year 2025 18 grants Accepts applications $150,550 giving
  15. Montalbano Family Foundation 1 IncBoise, ID · tax year 2024 1 grant Accepts applications $100,105 giving
  16. Live Foundation IncBoise, ID · tax year 2024 10 grants Accepts applications $66,828 giving
  17. Haugse-Cossey FoundationBoise, ID · tax year 2024 43 grants Accepts applications $52,500 giving
  18. Satz-Asbury Family Foundation IncBoise, ID · tax year 2024 19 grants Accepts applications $50,000 giving
  19. The Hilde Family Foundation IncBoise, ID · tax year 2024 9 grants Accepts applications $46,679 giving
  20. Annie's Foundation IncBoise, ID · tax year 2024 7 grants Accepts applications $38,000 giving
  21. Idaho Medical Association Foundation IncBoise, ID · tax year 2024 9 grants Accepts applications $31,000 giving
  22. Pierce Parke Peak Family FoundationBoise, ID · tax year 2025 8 grants Accepts applications $18,750 giving
  23. The Chad and Susan Ward Family FoundationBoise, ID · tax year 2025 2 grants Accepts applications $16,728 giving
  24. Frizzell Family FoundationBoise, ID · tax year 2024 12 grants Accepts applications $9,008 giving
  25. The Giving Care Foundation IncBoise, ID · tax year 2025 1 grant Accepts applications $3,105 giving

Giving by cause

Grants to organizations we matched to the IRS list of exempt organizations, by their category.

  1. Education32 foundations $14,554,78136% of the total
  2. Philanthropy and grantmaking20 foundations $6,851,45917% of the total
  3. Health23 foundations $4,482,25011% of the total
  4. Human services42 foundations $3,644,8059% of the total
  5. Environment27 foundations $3,012,6387% of the total
  6. Sports and recreation16 foundations $1,680,4734% of the total
  7. 15 other causes $6,649,22716% of the total

Most active small givers

Foundations with under $1 million in assets, by the number of grants they listed.

  1. Dallas and Alta Harris Family Foundation IncBoise, ID · tax year 2024 44 grants Preselected only $2,344,253 giving
  2. The Hackborn FoundationBoise, ID · tax year 2025 22 grants Preselected only $51,000 giving
  3. James E Hollingsworth Foundation IncBoise, ID · tax year 2025 22 grants Preselected only $50,905 giving
  4. The Jean Sullivan (wareagle) FoundationBoise, ID · tax year 2025 20 grants Preselected only $20,000 giving
  5. Dorothea Cunningham Family Foundation IncBoise, ID · tax year 2025 17 grants Preselected only $33,900 giving
  6. WEN Foundation IncBoise, ID · tax year 2025 17 grants Preselected only $18,000 giving
  7. Flora of the World Foundation IncBoise, ID · tax year 2025 15 grants Preselected only $54,500 giving
  8. The L & A FoundationBoise, ID · tax year 2024 14 grants Preselected only $27,000 giving
  9. Penny Family Charitable FoundationBoise, ID · tax year 2025 12 grants Preselected only $36,500 giving
  10. The Solomon Family Foundation IncBoise, ID · tax year 2024 12 grants Preselected only $27,100 giving
  11. The Campfire FoundationBoise, ID · tax year 2025 12 grants Preselected only $18,250 giving
  12. Frizzell Family FoundationBoise, ID · tax year 2024 12 grants Accepts applications $9,008 giving
  13. Sylvan Creek Foundation IncBoise, ID · tax year 2025 11 grants Preselected only $36,308 giving
  14. PTC Community Impact Fund CorpBoise, ID · tax year 2024 11 grants Preselected only $11,100 giving
  15. Live Foundation IncBoise, ID · tax year 2024 10 grants Accepts applications $66,828 giving