if you did not file for an extension for the S-corp it is now 7 months late. the penalty is about $200 per month per shareholder. look for a penalty notice from the IRS. you will have to write back something to the effect you believed the return was automatically extended 10/15/2020. that you have taken steps to ensure that in the future the return will be filed on time. therefore you request abatement of the penalty. the final determination is at the description of the IRS.
