TDI approves TAIPA request for rate increase Texas Department of Insurance sent this bulletin at 11/12/2019 09:06 AM CST Having trouble viewing this email? View it as a Web page. TDI approves TAIPA request for rate increase TDI has approved the Texas Automobile Insurance Plan Association (TAIPA) rate filing for a 4.9% increase private passenger rates and a 4.8% increase in commercial rates. Visit the TDI website for more information.