When Are S Corp Tax Returns Due? Your 2026 Guide
If you run an S corporation, there’s one date that should be permanently circled on your calendar every year. For most S corps, the federal tax return, Form 1120-S, is due by the 15th day of the third month after your business's tax year ends. For the vast majority of businesses that follow a standard […]
When Is the 1120 Due Date for C Corporations
Let's get right to it. When is your C corporation's Form 1120 actually due? For most businesses, the answer is simple: April 15. But—and this is a big but—that date only applies if your company's financial year ends on December 31. The real answer depends entirely on your corporation's specific tax year. Understanding the C […]