I filed an extension for my 2016 tax returns. I received a notice i owe money due to a late filing. How do i get my extension filing and prove i had an extension?

[Critter]

The timely filed 2016 extension gave you until 10/15/17 to file the return ... if you filed it after that date then the extension you filed was null and void. 

[Carl]

Also, and approved extension is only an approval to file. If taxes were due, they were due Apr 15, 2017. Nothing can extend the payment due date.

[m-sartor48]

I filed my extension before the initial return date. Where is my extension filed and how do i get a copy of that? Null, void or accepted there should be some record of it.

[m-sartor48]

I did not owe any taxes and was set to have a refund. Are you saying it doesn't matter if i filed an extension and it was approved i still needed to submit my taxes Apr 15? If so then i do not understand the point on an extension.

[VolvoGirl]

Not exactly.  Even if you have an extension any tax due you owe is due by April 15.  If you are getting a refund you don't need an extension.  You have 3 years to file for a refund.  

Did the IRS change your return from a refund to a tax due?  Check your return again and see if you really had a refund.  Maybe you read it wrong.  Or is it for a state return?

[Anonymous]

Fed or state notice.   for the Fed if you were due a refund and the return was correct as filed, there should be no late filing penalty.   If the IRS changed your return  and you now owe there would be a late filing and late payment penalty.   each state is different.