Louisiana Revised Statutes — Title 47 (Revenue and Taxation)
La. R.S. 47:726.1 — Gasoline and other motor fuels; advertised price; requirement
The advertised price of gasoline and other motor fuels sold at the pump shall include all taxes levied and collected on such fuel. Any advertisement of a price shall also clearly state whether the price is a "cash price" or a "credit price".
Source: official text