H.B. No. 135 mandates the comptroller of public accounts to conduct a comprehensive review of Texas's sales and use tax structure as outlined in Chapter 151 of the Tax Code. This review will include an inventory of all goods and services currently subject to or exempt from sales and use tax, as well as a comparison of Texas's tax base with those of other states. Additionally, the comptroller will identify goods and services that are not currently taxed in Texas but are commonly taxed in other states, are part of emerging sectors of the Texas economy, or could be included in future tax reform proposals. The review will also encompass an economic and fiscal impact analysis of potential expansions to the sales and use tax base.

The comptroller is required to submit a written report detailing the findings of this review to key state officials, including the governor and members of the legislature, by December 1, 2026. The bill is set to take effect on the 91st day following the end of the legislative session.