Form 2553 is the single page that turns your LLC or corporation into an S-Corp for tax purposes. Everything about S-Corp status — who qualifies, when to file, how to fix a missed deadline — flows from this one IRS form. Here's exactly how it works.
What Form 2553 actually does
Form 2553, "Election by a Small Business Corporation," is how you tell the IRS: treat this company as an S-Corporation. It's a tax election, not a formation document — you file it after you've formed your LLC or corporation with your state.
Once accepted, the entity files an S-Corp return (Form 1120-S) each year, and profit passes through to shareholders' personal returns without the self-employment tax hit on distributions.
Who can file it
Before you touch the form, confirm you qualify:
- Max 100 shareholders.
- One class of stock.
- All shareholders must be US citizens or resident aliens (green card holders). H-1B, L-1, EAD, and ITIN holders are not eligible shareholders.
- Certain entities are excluded outright (most insurance companies, domestic international sales corporations, etc.).
- All shareholders must sign the consent on Form 2553 — that's what makes the election valid.
When to file
The deadline depends on whether the company is new or existing:
| Situation | Deadline |
|---|---|
| New company, election effective from day one | By the 15th day of the 3rd month of its first tax year |
| Existing company, want it to start this tax year | By the 15th day of the 3rd month of that tax year |
| Formed too late to elect for year one | Election applies starting the next tax year |
For a calendar-year company, that "15th day of the 3rd month" lands on March 15. Miss it and the election generally starts the following year.
How to file
Three delivery options:
- Mail or fax to the IRS — the form's instructions list the address for your state. This is the classic route; processing takes several weeks, and the IRS backdates the acceptance.
- Fax — faster if you want a confirmation of receipt.
- File online — you can electronically sign and transmit Form 2553 through an authorized e-filing provider.
Keep a copy of what you sent and the date you sent it. That's your proof if the IRS loses or questions the filing.
Missed the deadline? The late-election relief
The IRS has a formal late-election process. You'll generally need to file Form 2553 along with a letter explaining why you missed the deadline, showing the election was inadvertent, and demonstrating that everyone treated the company as an S-Corp (filed S-Corp returns, paid distributions that way, etc.).
The IRS has been reasonably lenient for first-time mistakes, but leniency is not guaranteed — especially if the company filed a return inconsistent with S-Corp status. Don't plan around relief; plan around March 15.
What happens after the IRS accepts
- The IRS sends a Letter 2554 confirming your S-Corp status.
- You begin filing Form 1120-S for the entity's tax years as an S-Corp.
- You start running payroll for shareholder-employees (the reasonable salary).
- Each new shareholder must also be eligible and file their own consent when shares change hands.
Common mistakes
- Filing before the entity exists — you need a formed entity with an EIN before the election can apply.
- Missing signatures — every shareholder must sign the consent section.
- Ignoring the date — the March 15 rule is unforgiving.
- Assuming "I can just do it next year" — fine if the timing works, but if you've been running as an S-Corp and never elected, you have a bigger cleanup problem.
Common questions
Can I file Form 2553 online? Yes — the IRS accepts e-filed Form 2553 through approved providers. Fax and mail still work too.
Is there a fee for Form 2553? No — the election itself is free. (You'll still pay payroll and tax-prep costs once S-Corp status is running.)
What if my shareholder is an immigrant on a visa? They can't be an S-Corp shareholder. You'll need to either restructure (LLC/C-Corp) or the election will be rejected.
Can I elect S-Corp in a year the company already filed taxes? Generally not retroactively beyond the standard window without going through the late-election process.
Get the timing right with a CPA
The election is a one-page form — the strategy around it (salary, timing, and state taxes) is where CPAs earn their fee. A 30-minute call with ours will confirm your eligibility and the exact date to file.