- Is The Koster Foundation a tax-exempt 501(c)(3)?
- Yes — The Koster Foundation is recognised by the IRS as a 501(c)(3) organisation (EIN 41-2883498). The IRS recognised The Koster Foundation as tax-exempt in January 2026.
- What is The Koster Foundation's EIN?
- The Koster Foundation's Employer Identification Number (EIN) is 41-2883498. The EIN was assigned by the IRS in January 2026. Donors and grantmakers use the EIN to verify tax-exempt status with the IRS.
- What does The Koster Foundation do?
- The Koster Foundation is registered with the IRS as a philanthropy & grantmaking nonprofit organisation. A detailed mission statement is not available on its most recent Form 990 filing.
- Where is The Koster Foundation located?
- The Koster Foundation is located at PO BOX 194, Carroll, IA, 51401-0194.
- When was The Koster Foundation founded or recognised by the IRS?
- The Koster Foundation was recognised by the IRS as a tax-exempt organisation in January 2026. The IRS ruling date is the earliest authoritative date available for most US nonprofits.
