How to file a tax extension for an S corporation
S corporations file Form 7004 to get an automatic 6-month extension on their Form 1120-S return. It's an information return — the company itself usually owes no entity-level income tax — and we file the extension flat at $9.95.
Who files Form 7004 for an S-corp?
Any S corporation — including an LLC that elected S-corp taxation — that needs more time to file its Form 1120-S files Form 7004 in the company's name using its EIN. The extension is automatic; there's no approval step when it's filed on time with correct information.
When is the S-corp deadline?
For calendar-year S corporations, Form 1120-S is generally due around March 15 (TODO(verify): exact current-year date) — file Form 7004 by that date. A granted extension is generally six months, moving a calendar-year filer to around September 15 (TODO(verify)). Fiscal-year filers use the 15th day of the 3rd month after year-end.
Full extension deadline breakdown →How to file your S-corp extension
- 1Choose the 1120-S return
In the wizard, pick "S Corporation (Form 1120-S)" — we map it to the right Form 7004 code for you.
- 2Enter your details
Legal company name, EIN, address, and tax year. Most S-corps owe no entity-level tax, so the balance-due fields are usually zero.
- 3Pay one flat fee
A flat $9.95 — shown before you pay, with no subscription or hidden add-ons.
- 4We e-file with the IRS
We transmit directly to the IRS and email you the moment your extension is accepted.
S-corp extension FAQ
What form does an S-corp use for an extension?
Form 7004, to extend the Form 1120-S. An LLC that elected S-corp taxation uses the same Form 7004.
Does extending the 1120-S extend the shareholders' returns?
No. Each shareholder must file their own Form 4868 to extend their personal 1040 if they need more time.
Does an S-corp owe tax with the extension?
Usually not — an S-corp generally passes income through to shareholders. If your S-corp owes a built-in gains or similar entity-level tax, pay it by the original deadline; the extension does not extend the time to pay.
How long is the S-corp extension?
Generally an automatic 6-month extension, moving a calendar-year filer from around March to around September. TODO(verify): confirm the exact current-year dates.
Be first to file when the IRS opens
Extension e-filing opens when the IRS starts accepting returns in January. Get notified the moment it does — then file in minutes for the lowest price around.
No spam — just one email when filing opens. IRS-authorized e-file provider.
Related: partnership extension · LLC extension
Disclaimer: general guidance, not tax advice. Confirm the current-year deadline for your corporation.