If the purchase of credit insurance is voluntary, there are no early disclosure requirements under Reg Z because the purchase of credit insurance will not affect the APR.
The Federal Reg "Consumer Protection in Sales of Insurance" requires that you provide a disclosure at application if Credit Insurance is solicitated, offered or sold. My view is that if credit insurance is available for the type of loan requested, then it is considered offered.
I see you're from Texas. The Finance Code (Chapter 343) requires that you provide a disclosure for certain types of housing-related loans. The diclosure provides an example of the effects of financing a credit insurance premium.
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