Don't file Form 1120-S unless the corporation has filed or is attaching Form 2553, Election by a Small Business Corporation. For details, see the Instructions for Form 2553. Electronically …

Jul 14, 2025 · Learn how to file IRS Form 1120S for your S corporation. Discover key steps, deadlines, and tips to stay compliant and avoid penalties with the IRS.

Nov 1, 2025 · Form 1120-S is the official income tax return for S corporations. These entities are unique in that they choose to pass their income, losses, deductions, and credits through to …

Sep 24, 2025 · Filing an S corp tax return? Our guide explains how to file Form 1120-S, including the required information, deadline, and everything else you need to know

May 1, 2025 · Form 1120-S can be filed electronically through the IRS’s e-file system or with most tax prep software like most tax forms. You can also file the form by mail.

Understand what is Form 1120S, the crucial tax return for S corporations. Learn filing deadlines, key sections, and common mistakes to avoid.

How to File Form 1120S? Confirm the business has S corporation status by filing Form 2553. Ensure that the corporation’s tax year aligns with the calendar year unless a fiscal year has …

Apr 3, 2025 · In the same way that regular corporations file their taxes using Form 1120, S corporations file their tax return using Form 1120-S. Here’s what you need to know before you …

The deadline for filing Form 1120S is March 17, 2025, unless you’ve applied for an extension. You can apply for an extension up to March 17, 2025 using Form 7004.

Information about Form 1120-S, U.S. Income Tax Return for an S Corporation, including recent updates, related forms, and instructions on how to file. Form 1120-S is used by corporations …