NOL carryback and AMT

[NotEasy]

I am working on an 2005 amended tax return because of NOL carryback. Even though the NOL did reduce the AGI on line 34 of Form 1040, the tax program adds the NOL carryback amount back to line 10 of the Form 6251 so the final tax due became the same as before because of the increase in AMT. Are we supposed to add the full amount of the NOL carry backward to Form 6251? Is the tax program correct or not?

[Bees Knees]

Yes, the NOL is added back to line 10 of Form 6251. But then you are to re-figure the NOL using AMT rules and then enter the re-calculated AMT NOL to line 27 of Form 6251 as a deduction.

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