Form 15644 windows opening in May 2027
Groups whose yearly Form 15644 window opens in May 2027: usually those whose fiscal year ends in August. Useful for planning a season of filings.
IRS EO BMF, posted Oct 13, 2026
79 groups. Sorted by chapters on file, largest first.
- Shriners International
- Association of Texas Professional Educators
- Zeta Tau Alpha Intl Fraternity & Fraternity Housing Corporation
- Sons of Confederate Veterans Inc
- Phi Beta Kappa Society
- Alpha Chi Omega Fraternity Inc
- The Tau Beta Pi Association Inc
- Delta Delta Delta
- Gamma Phi Beta Sorority Inc
- Grand Lodge of Kentucky Free and Accepted Masons
- Alpha Phi Omega National Service Fraternity
- Order of the Eastern Star of Ohio Grand Chapter
- Ancient Accepted Scottish Rite of Freemasonry NMJ
- Kappa Delta Sorority Inc
- Movimiento Familiar Cristiano Catolico USA
- Ancient Free & Accepted Masons of Iowa
- Alpha Delta Pi Sorority
- Delta Tau Delta Fraternity
- National Organization of Mothers of Twins Clubs Inc
- Order of the Eastern Star of Missouri Grand Chapter
- Phi Upsilon Omicron Inc
- Grand Council of Royal and Select Masons of the State of Ohio
- Grand Chapter Order of Eastern Star of the State of Illinois
- Order of Eastern Star of New York
- Salon National la Boutique des Huit
- Honor Society of Sigma Lambda Alpha Incorporated
- Phi Chi Theta Inc
- Future Business Leaders of America- Inc
- South Carolina Farm Bureau Federation
- Alpha Epsilon Phi Sorority Inc
- Music Teachers Association of California
- Family Career and Community Leaders of America Inc
- Hugh Obrian Youth Leadership
- National Auxiliary of the Sons of Union Veterans of the Civil War US
- National Association of Neonatal Nurses
- National Society Dames of the the Court of Honor
- American Society for Clinical Laboratory Science
- Health Occupations Students of America
- National Society of Black Engineers
- Florida School Nutrition Association Inc
- Order of the Eastern Star of Colorado Grand Chapter
- American Begonia Society
- College Station Isd Council of Parent Teachers Organizations
- Minnesota State High School League
- The National Fraternity of Phi Gamma Nu
- Cryptic Masons of the State of New York Inc
- Sonoma County Safe and Sober Project Graduation
- Military Women Across the Nation
- Great Council of California Degree of Pocahontas Iorm
- National Junior Basketball
- The Federated Garden Clubs of Iowa Inc
- Mennonite Disaster Service
- The College Music Society
- California Womens Chorus Inc
- Indiana Soccer Association Inc
- United Square Dancers of America
- Irmandade de Santa Maria Magdalena
- Kirkwood School District Parent Teacher Organizational Council
- La Sertoma International
- Berkeley Heights Parent Teacher Organization
- Tri Delta Housing Inc
- United States Fencing Association
- American Blind Bowling Association Inc
- Grand Lodge of Ohio Sons and Daughters of Herman
- American Society for Clinical Laboratory Science Washington
- North American Office-University of Edinburgh Inc
- Central Oklahoma Youth Lacrosse Inc
- Secular Student Alliance
- Women of Tomorrow Mentor and Scholarship Program Inc
- Beta Pi Sigma Sorority
- Phi Delta Gamma
- Faith Club Inc
- Gamma Rho Lambda Sorority
- Leadership Program for Musicians Inc
- Lone Star Youth Council Inc
- National Black State Troopers Coalition
- National Junior College Athletic Association
- Pace Youth Development Corporation
- Stoa