@Bruce Binder
"my extension showing $0.00 will be due"
If you will not have tax due on April 18th, there is no reason to file for an extension of time.
There is no penalty for filing after April 18 if you get a refund.
Any action or rule that is qualified "including extensions", is available to you as long as you meet the extended deadline, even if you did not file Form 4868.
