Thanks for suggesting I call. Of course it would have been nice to have this information in the Audit Defense FAQ on the TurboTax website 🙂
The representative I talked to on the phone told me that anyone can purchase Audit Defense. And it can be purchased through TurboTax if you have a US address for the credit card billing as you suggested. Or you can purchase it direct from their website as they are a separate partner company. I'm not sure what happens if you list a foreign address on your tax return and a US address on the Audit Defense TurboTax purchase screen. I suggest anyone who is unsure to call the number to get your exact questions answered as I've never used the service personally. Hope this info helps!
