Corporate Income Tax Return Due Date 2026: Don’t Miss It
March 15, 2026 is the federal deadline for calendar-year S corporations and partnerships, and April 15, 2026 is the federal deadline for calendar-year C corporations. If you run a business and you don't know which date applies to you, you're already closer to a tax problem than you should be. A lot of owners hit […]
Mastering the 1120S Due Date for Your S-Corp
If you run your business as an S-corporation, one of the most important dates on your calendar is the 1120S due date. For the vast majority of S-corps that follow a standard calendar year, that deadline is March 15. It's a hard date, and missing it can trigger some painful and immediate penalties from the […]