The mailing address to file your Alabama Form 40, Alabama Individual Income Tax Return, will vary, depending on whether
you enclosing a payment or
not:
If you are not making a payment, mail your return to: Alabama Department of Revenue, P.O. Box 154, Montgomery, AL 36135-0001
If you are making a payment, mail your return, Form 40V, and payment to:
Alabama Department of Revenue, P.O. Box 2401 Montgomery, AL 36140-0001
Here is a link to the instructions to Alabama Form 40:
https://revenue.alabama.gov/incometax/2016_forms/16f40bk.pdf
