@iooc821253 - your post is somewhat unclear.
if you filed for the extension and paid the estimated taxes due by April 17, then you don't have to worry about a penalty for late filing. I am assuming you are now due a slight refund.
But if you are saying you filed for the extenson this week and paid what you calculated the taxes to be, then the payment is late and subject to late penalites, which the IRS will determine and let you know about at a later date.
