Is there a deadline to file for an amended return for an S Corp or C Corp?

Is there a deadline to file for an amended return for an S Corp or C Corp?

Yes, the due date to file for an amendment for either an S Corp or C Corp is the same as the due date to file the corporation's tax return, which is March 15. 


If the due date falls on a Saturday, Sunday or legal holiday, the corporation can file on the next day that is not Saturday, Sunday or legal holiday.