Friday, January 27, 2023 Business Louisiana’s corporate income tax highest in region By Holly Duchmann - January 27, 2023 FacebookXLinkedinEmailPrint The Baton Rouge skyline (iStock) Louisiana’s corporate income tax rate is the 15th highest in the nation, according to an analysis released this week by The Tax Foundation. Vance Ginn, chief economist at the right-leaning … Already an INSIDER? Sign in.