Contact us

If you have questions about the MOST 529 Plan, you can reach our education savings specialists by phone, email, or mail.


888-414-MOST (888-414-6678)
Monday through Friday
7 a.m. to 8 p.m., Central time


U.S. mail

MOST—Missouri's 529 Savings Plan
P.O. Box 219212
Kansas City, MO 64121-9212

Registered, certified, or overnight mail

MOST—Missouri's 529 Savings Plan
920 Main Street, Suite 900
Kansas City, MO 64105-2017

For Missouri employers

Interested in finding out more about what MOST 529 can offer you and your employees? Fill out our Employer Online Request Form and a MOST 529 representative will contact you.

Contacting the Missouri State Treasurer's Office

The MOST 529 Plan is sponsored by the Missouri State Treasurer's Office. If you'd like to get in touch with the office, visit their website for contact information.