Form 15644 windows opening in October 2026
Groups whose yearly Form 15644 window opens in October 2026: usually those whose fiscal year ends in January. Useful for planning a season of filings.
IRS EO BMF, posted Oct 13, 2026
1,401 groups, page 2 of 6. Sorted by chapters on file, largest first.
- Help Desk Chapters Inc
- Phi Sigma Rho National Sorority
- State Charter Credit Unions in Florida Group Return
- Texas Master Gardener Association Inc
- United States Masters Swimming Inc
- Alabama Credit Union Administration
- Epsilon Pi Tau Inc
- Ancient Free & Accepted Masons of New Mexico Grand Lodge
- Bereaved Parents of the USA
- Credit Unions in the State of Washington
- Educational Theatre Association
- National Property Management Association Inc
- American Rental Association
- National Society of Southern Dames of America Inc
- Association for Vascular Access
- Supreme Council of the Royal Arcanum
- United Postmasters and Managers of America
- Holiday Rambler Recreational Vehicle Club Inc
- International Longshore & Warehouse Union
- Royal Arch Masons of Pennsylvania Grand Holy Chapter
- American Institute of Chemical Engineers
- Southern Off-Road Bicycle Association
- National Association of Scholars Inc
- Society of Plastics Engineers Inc
- 1891 Financial Life
- American Brittany Club Inc
- Healthcare Information and Management Systems Society
- Sokol USA
- William Penn Association
- Young Catholic Professionals
- Association of Old Crows
- Independent Order of Foresters
- National Football Foundation and College Hall of Fame Inc
- Parents of Murdered Children Inc
- Society of Gastroenterology Nurses and Associates Inc
- Assured Life Association
- International Police Association United States Section
- Meeting Professionals International
- Point Man International Ministries
- Society of Professional Journalists
- American College of Dentists Inc
- American Industrial Hygiene Association
- BJC Health System
- Case Management Society of America Inc
- Citizens of Georgia Power Company State Organization
- International Society of Certified Employee Benefit Specialists Inc
- National Slovak Society of the USA
- Graceworks Lutheran Services
- Pacific Service Employees Association of Pg&e
- Royal Arch Masons of New York Grand Chapter
- American Association of Neuroscience Nurses
- American Society of Agricultural and Biological Engineers
- Boys & Girls Clubs of America
- Corewell Health
- Credit Unions Chartered in Colorado
- Fulbright Association Inc
- Highmark Health
- KSKJ Life
- National Association of Tax Professionals Inc
- National Society Daughters of the Union 1861-1865 Inc
- American Water Works Association
- Ancient Free & Accepted Masons of Idaho Grand Lodge
- Global Business Travel Association Inc
- American College of Nurse-Midwives
- React International Inc
- Alpha Epsilon Delta
- American Academy of Matrimonial Lawyers
- Autism Society of America Inc
- Folds of Honor Foundation
- Jumpstart Coalition for Personal Financial Literacy
- Physicians for a National Health Program Inc
- Springpoint Senior Living Inc
- Supreme Temple Pythian Sisters
- Veterans of Foreign Wars of the United States Dept of South Dakota
- American Immigration Lawyers Association
- Business Mens Fellowship USA
- Society for Management Information Systems
- American Society of Addiction Medicine Inc
- Aoc Educational Foundation Inc
- Association of Desk & Derrick Clubs
- California Department of Forestry Employees Association
- Colorado Coalition for the Homeless
- National Council on Family Relations
- Oregon Hunters Association
- American Society of Travel Advisors Inc
- Association of Continuity Professionals
- Fbi National Academy Associates Inc
- Gold Star Wives of America Inc
- Impact Seven Incorporated
- National Association of Orthopaedic Nurses Inc
- National Conference of State Societies Washington District of C
- Society of American Foresters
- The Association of Nurses in Aids Care
- United Square Dancer of America
- American Christian Fiction Writers Inc
- Audi Car Club of North America Inc
- Construction Management Association of America Inc
- Free & Accepted Masons of Utah Grand Lodge
- Full Gospel Business Mens Fellowship in America
- Hands for Life
- Jamestowne Society Inc
- Mathematical Association of America Incorporated
- New England Police Benevolent Association Inc
- Royal Arch Masons of Tennessee
- State Chartered Credit Unions in North Carolina
- Teamster Horsemen Motorcycle Association Inc
- Vermont Mountain Bike Advocate Inc
- Alpha Pi Mu Association
- American Art Therapy Association Inc
- First Catholic Slovak Union of the United States & Canada
- Huntingtons Disease Society of America Inc
- National Association for Catering and Events
- Royal Arch Masons of West Virginia
- Seminary Covenant Community
- Surface Navy Association
- Academy of General Dentistry
- Bowling Proprietors Association of America Inc
- Free and Accepted Masons of the District of Columbia
- Organization of Chinese Americans Inc
- American Veterinary Medical Association
- California State Retirees
- Fraternal Order of Police Associates of Ohio Inc
- National Society Daughters of Founders & Patriots of America
- National Space Society
- National Speakers Association
- US-China Peoples Friendship Association National
- Apra
- Christian Legal Society
- Colorado State Grange Patrons of Husbandry
- Gbu Financial Life
- Grand Council Cryptic Masons of Indiana
- Hawaii United Okinawa Association
- Housing Visions Unlimited Inc
- International Association of Eating Disorders Professionals Foundation
- National Association of Housing & Redevelopment Officials
- Office of the Financial Institution of the State of Louisiana
- Pioneers of Alaska
- Printing Packaging & Production Workers Union of North America
- Royal and Select Masters of Georgia Grand Council
- Royal Arch Masons of Indiana
- American Vaulting Association
- Association of Clinical Research Professionals
- Greater Houston Community Foundation
- International Society of Automation
- National Association of Hispanic Nurses Inc
- Ohio State Beekeepers Association Inc
- Swedish Womens Educational Association International Inc
- Texas Restaurant Association
- Womens General Aux of the Twin Citi Unit Shriners Hospital Crppld Chld
- Aace International
- American College of Prosthodontists
- American Postal Workers Union Auxiliary
- Association of Pediatric Hematology Oncology Nurses Inc
- Buffalo and Erie County Public Library Co
- California Dental Hygienists Association
- California Pilots Association
- Hackensack Meridian Health Inc
- Master Gardener Association
- National Huguenot Society Inc
- Natural Men and Natural Women Organization Inc
- Non Commissioned Officers Association of the U S of America
- Royal Arch Masons of Georgia Grand Chapter
- Safari Club International Foundation
- US Lacrosse Inc
- Association of Occupational Health Professionals
- Christian Care Communities Inc
- Forging Youth Resilience
- Full Gospel Businessmens Fellowship International
- International Womens Insolvency & Restructuring Confederation Inc
- Omicron Kappa Upsilon Honorary Dental Society Supreme
- Paragon Christian Alliance International Inc
- Pearland I S D Booster Clubs Inc
- Society of Pediatric Nurses
- Wake Forest University Health Sciences
- Women in Cable Telecommunications
- Association of Professional Genealogists
- Catholic Financial Life Foundation Inc
- Escapees Social Network Inc
- Grand Council Cryptic Masons of Tennessee
- Hire-National Inc
- Illinois Credit Union League
- Mississippi Community Volunteers Inc
- National Association of Certified Professional Midwives Inc
- Ohio Dental Association
- Rolls-Royce Owners Club Inc
- Serb National Federation
- Smart Transporation Division Auxiliary
- The Methodist Hospital
- American Association of Family and Consumer Sciences
- American Association of Physicists in Medicine
- American Sokol Organization and Educational and Physical Culture O
- Association of School Business Officials International
- California Land Sureveyors Association Inc
- Chevron Retirees Association
- Childrens International Summer Villages Inc
- Citizens Commission on Human Rights
- Connecticut State Banking Department Group Return
- Credit Unions Chartered in the State of Utah
- Florida Native Plant Society Inc
- Grambling University National Alumni Association
- Greyhound Pets of America
- Les Gemmes Incorporated
- National Hook-Up of Black Women Inc
- Plast Ukrainian Scouting Organization USA
- Royal Arch Masons of Louisiana Grand Chapter
- South Nassau Communities Hospital
- The Arc of Texas
- Womens Council of Realtors California State Chapt
- Alliance of Transylvania Saxons of US
- Association of Women in the Metal Industries Inc
- Catholic Association of Foresters
- Chicano Correctional Workers Association
- Grand Lodge Knights of Pythias of Indiana
- Institute of Scrap Recycling Industries Inc
- National Management Assoc
- Phi
- Riverside Healthcare Association Inc
- Robin Merger Corporation Inc
- Society for Technical Communication
- Square Dance Minnesota Inc
- Tuskegee Airmen Inc
- University Hospitals Health System Inc
- Afro-American Historical and Genealogical Society
- Agape Maya Inc
- Albany Med Health System
- American Gi Forum of the U S
- Association of Western Pulp and Paper Workers
- California Optometric Association
- Catholic Holy Family Society
- Community Housing Services Inc
- Credit Unions in the State of New Mexico
- Daughters of Esther Fellowship International Ministries Inc
- Insurance Accounting & Systems Association Inc
- International Association of Jewish Genealogical Societies Inc
- International Institute of Building Enclosure Consultants
- Mayo Clinic
- Methodist Retirement Communities
- National Council on Youth Leadership
- Nu Rho Psi - the National Honor Society in Neuroscience
- Partners in Action Inc
- Rving Women
- Sanford
- Spirithorse Therapeutic Riding Center
- Wedding International Professionals Association
- African-American Postal League United for Success a-Plus
- American Association of Healthcare Administrative Management
- American Society of Media Photographers Inc
- Brotherhood of the Knights of the Vine
- District 21 American Contract Bridge League
- Immigrant Hope