The Principia PrinBill

Welcome to PrinBill

PrinBill provides online access to view your monthly eStatement, set up a payment plan, and make payments, using industry-compliant secure access.

Authorized User Information:   

Authorized Users have their own individual online access to student PrinBill accounts to view monthly eStatements, to set up a payment plan and to make payments.

Attention School Parents: Authorized user setup must be handled by Billing Services.

Attention College Parents: Authorized user setup must be done by your college student.


Billing Services Contacts:  
Cheryl Carbonell Phone Number: 314.514.3122
  Email Address:
Milly Mensing Phone Number: 314.275.3554
  Email Address:

Principia School and Principia College


Authorized User Login

Principia School PrinBill Guide

Principia College PrinBill Guide