The Principia

Welcome to PrinBill

PrinBill provides online access to view of your Principia eBill, make payments, and set up a payment plan, using industry-compliant secure access.
Hours of Operation:    Prinbill is normally available 7 days a week from 4:30 a.m. to 1:30 a.m. (Central time). PrinBill
Scheduled maintenance:    PrinBill is normally unavailable until 1 p.m. (Central time) on the second and third Saturdays of the month for regular maintenance.
Authorized User Logins:   

When you are set up as a PrinBill Authorized User, you have access to your student's PrinBill account to view eBills, make payments and enroll in a payment plan (click here for login and forgotten password instructions). If you change your email address, please be sure to update PrinBill within the My Profiles tab. This will enable continued PrinBill emails and access to all your user history and payment information (click here for instructions).

Principia School

Principia School

Parents of Students and other Authorized Users


Authorized User Login

Payment Plan Dates
Open Enrollment Period: August 1 - 14
Payment Plan Auto-Enroll: Friday, August 15  
Number of payments:10 
Payment due dates:August 26January 26
 September 26February 26
 October 26March 26
 November 26April 26
 December 26 May 26
Link to:How to Enroll in the School Payment Plan
 Payment Plan Rollover Information

Information and How To's
Screenshots Videos
The Principia School PrinBill Guide Login/View eBill
How to Make a PrinBill Payment Set up Payment Plan/Make Payment
How To View Your eBill  

Billing Services - School Accounts
Cheryl CarbonellPhone Number:314.514.3122
 Email Address:Cheryl.Carbonell@Principia.edu
Milly MensingPhone Number:314.275.3554
 Email Address:Milly.Mensing@Principia.edu
          Principia College

Principia College

Current Students and Authorized Users


Student Access       Authorized User Login

Payment Plan Dates
Open Enrollment Period: August 1 - 14 and December 1 - 15
Payment Plan Auto-Enroll: Fall Friday, August 15 / Spring Tuesday, December 16
Number of payments:4 each semester 
Payment due dates:FallSpring
 August 26December 26
 September 26January 26
 October 26February 26
 November 26March 26
Link to:How to Enroll in the College Payment Plan
Payment Plan Auto-Enroll Information

Information and How To's
Screenshots Videos
Principia College PrinBill Guide Login/View eBill
How to Make a PrinBill Payment Set up Payment Plan/Make Payment
How To View Your eBill  

Billing Services - College Accounts
Milly MensingPhone Number:314.275.3554
 Email Address:Milly.Mensing@Principia.edu
Cheryl CarbonellPhone Number:314.514.3122
 Email Address:Cheryl.Carbonell@Principia.edu