H.B. No. 103 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 growing sectors of the Texas economy, or could be included in future tax reform proposals.

The bill also requires an economic and fiscal impact analysis of expanding the sales and use tax base to include additional goods and services. This analysis will project revenue gains under various scenarios, assess the distributional effects on different income groups and geographic regions, and evaluate potential impacts on small businesses, Texas-based industries, consumer behavior, and the state's economic competitiveness. A written report summarizing the findings of this review must be submitted to key state officials by December 1, 2026. The act will take effect 91 days after the end of the legislative session.