Relating to the computation of certain tax penalties and interest amounts.

SB 1337 amends Texas tax code provisions to change how penalties and interest are calculated for tax delinquencies and overpayments. The bill requires that when calculating penalties (Section 111.061) and interest (Sections 111.060, 111.064), the amount used must first subtract any overpayments made by the taxpayer for the same tax period or any prior period. This change directly affects taxpayers who have paid more than owed for specific tax periods, potentially reducing their penalty or interest charges. The bill does not alter tax rates or create new obligations but adjusts the computation method for existing penalties and interest.