- Is Sigma XI the Scientific Research Honor Society a tax-exempt 501(c)(3)?
- Yes. Sigma XI the Scientific Research Honor Society is recognised by the IRS as a 501(c)(3) organisation (EIN 06-0655494). The IRS recognised Sigma XI the Scientific Research Honor Society as tax-exempt in June 1943.
- What is Sigma XI the Scientific Research Honor Society's EIN?
- Sigma XI the Scientific Research Honor Society's Employer Identification Number (EIN) is 06-0655494. The EIN was assigned by the IRS in June 1943. Donors and grantmakers use the EIN to verify tax-exempt status with the IRS.
- What does Sigma XI the Scientific Research Honor Society do?
- The honor society of scientists and engineers that recognizes scientific achievement.
- Where is Sigma XI the Scientific Research Honor Society located?
- Sigma XI the Scientific Research Honor Society is located at PO Box 13975, Research Triangle Park, NC, 27709.
- When was Sigma XI the Scientific Research Honor Society founded or recognised by the IRS?
- Sigma XI the Scientific Research Honor Society was recognised by the IRS as a tax-exempt organisation in June 1943. The IRS ruling date is the earliest authoritative date available for most US nonprofits.
- What is Sigma XI the Scientific Research Honor Society's annual revenue?
- On its most recent Form 990 (fiscal year 2024), Sigma XI the Scientific Research Honor Society reported $4.9M in total revenue and $5.1M in total expenses.
- Has Sigma XI the Scientific Research Honor Society been auto-revoked by the IRS?
- No. Sigma XI the Scientific Research Honor Society (EIN 06-0655494) 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 Sigma XI the Scientific Research Honor Society listed in IRS Publication 78?
- Yes. Sigma XI the Scientific Research Honor Society 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.
