As of 2020, the cathedraticum is a 15.5% assessment on parish income such as Sunday offertory and building fund collections for the previous fiscal year.

The non-assessable income is from jamaicas, fundraisers, insurance recoveries, grants, DCA payments, and second collections.

Parishes are billed for the entire year's assessment in July. It is up to the parish to decide on payment arrangements to ensure the total is paid by June 30.

The cathedraticum funds the following administrative departments:
Clergy - Admin, 
Finance Office, 
Renewal Center, 
Bishop’s Office, 
Facilities, 
Chancellor, 
Annual Appeal, 
Parish Administration, 
Development, 
Tribunal, 
Pastoral Center, 
Bishop’s Residence, 
Dues Memberships Gifts, 
Deposit and Loan, 
Patton Finance Center, 
Bishop Emeritus, and
Vicar General

History:
In 1981 most of the 25-counties of the current Diocese of Lubbock were part of the Diocese of Amarillo. Amarillo ran a United Catholic Appeal (UCA), replacing a per capita assessment on each parish. When the Diocese of Lubbock was established in 1983, the Diocesan Catholic Appeal (DCA) was created, taking many best practices from the UCA. The DCA was the only income the diocese received from parishes and parishioners. There was not a cathedraticum until 2020.

The cathedraticum was established because the DCA was unable to fund the Diocese. The Diocese continued to operate with a hefty line of credit. Bishop Coerver has implemented a cathedracdium to cover necessary administrative expenses. The DCA was abolished and replaced with Ministries Offering.