Alabama, do I need to file?

My return comes out as $0. Do I still need to file? If so can I print it and mail it instead of paying $40 to efile a $0 return? If so how do I do this? I don't owe and I am not getting a refund. I only want to pay to efile federal.

 

I read for Alabama if gross income is under $10,500 for married filing jointly you don't need to file. Where is the gross income found? I can't view return until I pay but I don't want to pay &40 to file a $0 return. We have retirement and social security but it says the social security is not counted/taxable. So do I have to count the social security in the gross income?