After you file

@1024Vijay  I am in the same boat as you.    I filed my return before 4/18,  I live in a California county where filing/paying deadlines were extended to 10/16.  I planed to pay the balance in October, but received CP14 on 6/4 demanding payment by 6/26.  The amount on the notice matches my return filed, and the notice didn't assess any penalty or interest.  I can't figure out why.