Follow the steps below to continue on your journey to becoming part of the Celt Family!

If you have already activated these, please skip this step.

To Activate Your Celt Login ID and Webmail Account:

  • Go to the Celt Login ID activation page and sign up online for a Celt Login ID using your Admissions-issued UST ID number.
  • Enter your UST ID number and choose and confirm a password.
  • You will be given a user name that combined with is your new UST email address.
  • To log on to your Webmail account after completing the set up process, visit to the UST Webmail page.

To Activate Your myStThom Account:

  • You must first complete the steps above to set up your Celt Login ID, password and Webmail account.
  • To access your myStThom account, visit the myStThom login page and enter your Celt Login ID to sign in.

For more information, please visit IT’s CLAS Account Information page or contact the IT Help Desk at or 713-525-6900.

Let us know you accept your admission to UST! In your myStThom account click on the “Admissions” tile and then choose “Accept.”

You can submit your Free Application for Federal Student Aid (FAFSA) starting October 1!  When completing your form use UST’s FAFSA code, 003654.

UST will start sending financial aid packages in late November.  Once you receive your packages you are able to review and accept any awards online.  For more information or help completing the FAFSA, visit our financial aid page.

Questions can be directed to or 713-525-2170.

Submit your $200 enrollment deposit* to secure your place in the entering class. Please contact the Office of Undergraduate Admissions at or 713-525-3500 if you have any questions.

Pay your Deposit Online:

You can access our online payment system here. Please make sure you are accessing the payment system from a PC.

  1. Enter your Student ID, First Name and Last Name as it appears on your acceptance package or acceptance email.
  2. This will prompt a redirect to our payment page (pop ups will need to be allowed.)
  3. Complete the payment information.

*Please make sure you are NOT logged in to your UST account before accessing the enrollment deposit system.

Pay Your Deposit by Mail
You can mail in your payment to:

University of St. Thomas
Office of Undergraduate Admissions 
3800 Montrose Blvd.
Box #7
Houston, TX 77006

Please make sure to include UST ID number and first and last name as it appears on your acceptance package.

Pay Your Deposit on Campus
If you plan to visit our campus for a tour or event you can bring your enrollment deposit with you!  Deposits must be paid before arriving to your registration appointment.

Questions be directed to or 713-525-3500.

Please Note

*Your enrollment deposit is completely refundable through May 1, 2021. Please contact your admissions counselor.

If you are younger than 22 evidence of vaccination must be submitted in one of the following three formats:

  • UST immunization form*
  • An official immunization record from a state or local health authority*
  • An official record received from state officials, including a record from another state

Whatever you submit must include the month, day and year the vaccination was administered.

*Must be signed or stamped by a certified, licensed physician or his/her designee, or public health personnel.

  • Immunization records can be submitted through your MYSTTHOM, using the Immunization Form Upload tile located on your homepage. 

More information is available at Office of Health Promotion & Wellness.  Questions, concerns and records can be submitted to or 713-525-3513.

NOTE: students will not be able to register for classes or sign up for housing until the appropriate records are on file.

Students interested in housing need to complete a Housing Interest FormThis form is not a contract.  Once you have submitted the form, the additional immunization documents required for on campus housing and paid your $300 housing deposit the Office of Residence Life will contact you to sign a contract.   Students can learn more on our housing page.

Questions can be directed to or 713-525-3836.

Every incoming freshman is required to meet with an advisor before enrolling in classes. Spring 2022 students should contact their admissions counselors for details.

Fall 2022 students should register for one of our upcoming Celt ROAR Days:


This day will include Resources, Orientation, Advising, and Registration for new students, as well as an opportunity for you to truly embrace the Celt Culture.

If you have any questions please contact your admissions counselor or Karen Bautista at or 713-525-3506.

Your transition into the University of St. Thomas continues at Orientation! During Orientation, you and your family get to know the St. Thomas campus community, our programs, other students and their families. It is required that all incoming students sign up to attend.

Save the Date:

  • January 10, 2022 (Additional details to follow)

For more information visit