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Nonprofit · EIN 25-1027211

COMBUSTION INSTITUTE

Tax-exempt (reinstated) · PITTSBURGH, PA 15213

What it must file and when

IRS records say it files Form 990-PF. Private foundations file every year. Its accounting year ends in June, so each return is due on the 15th day of the 5th month after that.

Tax yearYear endedDueIRS public records
2025June 30, 2026November 16, 2026Not due yet
2024June 30, 2025November 17, 2025990-PF on file
2023June 30, 2024November 15, 2024990-PF on file

IRS record

EIN
25-1027211
Tax-exempt status
501(c)(3): Charitable, religious, educational or scientific organization
Foundation status
Private non-operating foundation
Donations deductible (Pub 78)
Private foundation, 30% limit
Exempt since
2023
Accounting year ends
June
Files
Form 990-PF
Reinstated
November 15, 2021

Filing history

FormYear endedRevenueExpensesAssets
990-PFJune 2025–––
990-PFJune 2024–––
990-PFJune 2023$2,056,717$1,633,303$7,528,821

990-N: the IRS publishes only the latest e-Postcard per organization; earlier years appear here as 990.tax collects the monthly files. 990, 990-EZ, 990-PF: e-filed returns processed since 2019; amounts from the IRS Statistics of Income extracts where available.

Other organizations in PITTSBURGH