- Is Open Source Endowment Foundation a tax-exempt 501(c)(3)?
- Yes. Open Source Endowment Foundation is recognised by the IRS as a 501(c)(3) organisation (EIN 33-3502715). The IRS recognised Open Source Endowment Foundation as tax-exempt in December 2025.
- What is Open Source Endowment Foundation's EIN?
- Open Source Endowment Foundation's Employer Identification Number (EIN) is 33-3502715. The EIN was assigned by the IRS in December 2025. Donors and grantmakers use the EIN to verify tax-exempt status with the IRS.
- What does Open Source Endowment Foundation do?
- Open Source Endowment 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 Open Source Endowment Foundation located?
- Open Source Endowment Foundation is located at 74 E Glenwood Avenue Unit Unit 5756, Smyrna, DE, 19977-1002.
- When was Open Source Endowment Foundation founded or recognised by the IRS?
- Open Source Endowment Foundation was recognised by the IRS as a tax-exempt organisation in December 2025. The IRS ruling date is the earliest authoritative date available for most US nonprofits.
- What is Open Source Endowment Foundation's annual revenue?
- Open Source Endowment Foundation reports $485K in latest available revenue per IRS records. Full Form 990 figures are available on the financials tab.
- Has Open Source Endowment Foundation been auto-revoked by the IRS?
- No. Open Source Endowment Foundation (EIN 33-3502715) does not appear on the IRS Auto-Revocation List. Givalgo Discover cross-references the IRS Auto-Revocation List on every profile load; if status changes, this page reflects it.
- Is Open Source Endowment Foundation listed in IRS Publication 78?
- Yes. Open Source Endowment Foundation is listed in IRS Publication 78 as an organisation eligible to receive tax-deductible charitable contributions. Pub 78 status is the canonical IRS signal that donations to an org are deductible.
