Important Dates to Keep in Mind 6/30/18 Incurred Cost Submission Due Date 7/31/18 Form 5500 – Annual Return/Report of Employee Benefit Plan Due Date Form 941 – Employer’s Quarterly Federal Tax Return Due Date 9/17/18 Form 1065 – Return of Partnership Income Extended Deadline Form 1120S – S Corporation Tax Return Extended Deadline 3rd Quarter...Continue Reading