I think you may be confused a little about what features are included in MAX. I'm linking below information that will explain all of the benefits included in the MAX add-on option.
What is MAX?
Audit Defense, on the other hand, is a completely separate add-on offering. The benefits included in Audit Defense are contained in the info below. Audit Defense is provided by an outside company that contracts with TurboTax customers.
What is Audit Defense?
ALL versions of TurboTax include (at no additional charge) the TurboTax Audit Support Guarantee. To differentiate between Audit Defense and the TurboTax Audit Support Guarantee, see the info linked below.
What is the difference between the Audit Support Guarantee and Audit Defense?
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*** I am NOT a tax expert. I am a seasoned TurboTax user, and volunteer to provide assistance to TT users. Nothing I post is to be considered TAX ADVICE; I bear no legal liability for responses.***