Unsure what "AMT depreciation amount allowable" means in my mileage deduction area - It was flagged as missing, but how do I calculate it?

[vverlee]

I am filing as self-employed and using calculated, rather than standard, mileage deduction. When I finished my taxes it told me that one item was missing, line 52 in the Schedule C form of my milage deduction.

[CherylW]

AMT depreciation is generally the same as your regular mileage deduction.

In fact, it's so rare to have cases that it's not the same that you would know it wasn't.