- Is Mathematical Staircase a tax-exempt 501(c)(3)?
- Yes. Mathematical Staircase is recognised by the IRS as a 501(c)(3) organisation (EIN 46-1813949). The IRS recognised Mathematical Staircase as tax-exempt in May 2013.
- What is Mathematical Staircase's EIN?
- Mathematical Staircase's Employer Identification Number (EIN) is 46-1813949. The EIN was assigned by the IRS in May 2013. Donors and grantmakers use the EIN to verify tax-exempt status with the IRS.
- What does Mathematical Staircase do?
- To educate mathematically talented secondary and tertiary students in Mathematical thinking and writing. The means of providing such education includes, but is not limited to, establishing summer programs for instructing such students.
- Where is Mathematical Staircase located?
- Mathematical Staircase is located at 214 Lippincott Avenue, Ardmore, PA, 19003.
- When was Mathematical Staircase founded or recognised by the IRS?
- Mathematical Staircase was recognised by the IRS as a tax-exempt organisation in May 2013. The IRS ruling date is the earliest authoritative date available for most US nonprofits.
- What is Mathematical Staircase's annual revenue?
- On its most recent Form 990 (fiscal year 2025), Mathematical Staircase reported $519K in total revenue and $500K in total expenses.
- Has Mathematical Staircase been auto-revoked by the IRS?
- No. Mathematical Staircase (EIN 46-1813949) 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 Mathematical Staircase listed in IRS Publication 78?
- Yes. Mathematical Staircase 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.
