To file Form 2553 and elect S-corporation status, complete the current IRS version of the form, collect a signed consent from every shareholder, and submit it by mail or fax to one of two IRS service centers within two months and 15 days after your tax year begins. For a calendar-year business electing for 2026, that deadline is March 16, 2026, because March 15 falls on a Sunday. The form cannot be filed electronically. A missing signature, a name that doesn’t match your formation documents, or a late postmark can push the election back a full year, so the details matter as much as the deadline.
Confirm the Business Qualifies
Every requirement in Section 1361(b) has to be met on the day you file.1Office of the Law Revision Counsel. 26 USC 1361 – S Corporation Defined The entity must be a domestic corporation or a domestic entity eligible to be treated as one, which includes most LLCs. It can have no more than 100 shareholders, though members of the same family count as one. Every shareholder must be an individual, a qualifying estate, or a qualifying trust; other corporations, partnerships, and nonresident aliens cannot own shares. And there can be only one class of stock, meaning identical rights to distributions and liquidation proceeds. Differences in voting rights alone are fine.
LLCs get a shortcut. A timely Form 2553 automatically triggers the deemed election to be treated as a corporation for tax purposes, so you do not need to file Form 8832 separately.2Internal Revenue Service. Form 8832 Entity Classification Election Instructions
One boundary worth flagging: if the business is currently a C-corporation with appreciated assets, converting can trigger a built-in gains tax under Section 1374 on gain recognized within five years of conversion.3Office of the Law Revision Counsel. 26 USC 1374 – Tax Imposed on Certain Built-In Gains That doesn’t apply to new entities or LLCs that were never C-corporations, but if it applies to you, work the numbers with a tax professional before you file.
Fill Out the Form
Download the current Form 2553 from the IRS website.4Internal Revenue Service. About Form 2553, Election by a Small Business Corporation The form has four parts. Most filers only need Part I plus the shareholder consent section.
Part I: Election Information
Enter the corporation’s legal name exactly as it appears on the articles of incorporation or formation documents. A mismatch will get the filing rejected. You’ll also need:
- Employer Identification Number. If you haven’t received one yet, write “Applied For” and the date you submitted the EIN application.5Internal Revenue Service. Instructions for Form 2553
- Date of incorporation, taken from the corporate charter or LLC formation document.
- State of incorporation, which is where the entity was legally formed, not necessarily where it operates.
- Tax year. Most S-corporations use a calendar year. If you want a fiscal year, complete Part II and either demonstrate a legitimate business purpose or make a Section 444 election.6Internal Revenue Service. Form 2553
Shareholder Consent
Every person who owns stock on the day the election is made must sign the consent section. Each shareholder provides their name, Social Security number or taxpayer ID, the number of shares owned, and the date the shares were acquired.5Internal Revenue Service. Instructions for Form 2553 Once a valid election is made, the consent is binding and cannot be withdrawn.6Internal Revenue Service. Form 2553
The single most common reason elections get rejected involves community property. If a shareholder lives in a community property state and their spouse has a community interest in the stock or the income from it, the spouse must sign too, even if the spouse isn’t listed as a direct owner.5Internal Revenue Service. Instructions for Form 2553 When in doubt, have the spouse sign. An extra signature causes no problem; a missing one kills the election.
Know the Filing Window
Section 1362(b) gives you two options.7Office of the Law Revision Counsel. 26 USC 1362 – Election; Revocation; Termination You can file at any point during the tax year before the year you want the election to take effect. So filing in October 2025 makes the election effective January 1, 2026. Or you can file during the current tax year, no later than two months and 15 days after the tax year starts. For a calendar-year corporation in 2026, that deadline is March 16.
If you file during the current year but miss the two-month-and-15-day window, the election automatically rolls to the following tax year. The same thing happens if the entity failed any eligibility requirement on any day before the filing, or if any pre-filing shareholder didn’t consent.
New Businesses
For a brand-new corporation or LLC, the clock starts on the earliest of three dates: the day the entity has shareholders, the day it acquires assets, or the day it begins doing business. When the first tax year is shorter than two and a half months, the counting method in the IRS instructions applies: the two-month period ends on the day before the same numerical date two months later, and 15 days are added from there. A corporation whose first tax year begins November 8, for example, must file by January 22.8Internal Revenue Service. Instructions for Form 2553
Where to Send It
Form 2553 cannot currently be filed electronically. Submit it by mail or fax to one of two IRS service centers, based on where the corporation’s principal office sits.9Internal Revenue Service. Where to File Your Taxes for Form 2553
If the principal office is in Connecticut, Delaware, the District of Columbia, Georgia, Illinois, Indiana, Kentucky, Maine, Massachusetts, Michigan, New Hampshire, New Jersey, New York, North Carolina, Ohio, Pennsylvania, Rhode Island, South Carolina, Tennessee, Vermont, Virginia, West Virginia, or Wisconsin:
- Mail: Department of the Treasury, Internal Revenue Service, Kansas City, MO 64999
- Fax: 855-887-7734
If the principal office is in Alabama, Alaska, Arizona, Arkansas, California, Colorado, Florida, Hawaii, Idaho, Iowa, Kansas, Louisiana, Minnesota, Mississippi, Missouri, Montana, Nebraska, Nevada, New Mexico, North Dakota, Oklahoma, Oregon, South Dakota, Texas, Utah, Washington, or Wyoming:
- Mail: Department of the Treasury, Internal Revenue Service, Ogden, UT 84201
- Fax: 855-214-7520
Faxing is faster and produces an immediate transmission record, which matters when you’re near the deadline. If you mail, use certified or registered USPS mail, or an IRS-designated private delivery service. Acceptable proof of timely filing includes a certified mail receipt with a timely postmark, a copy of the form stamped with an IRS received date, or an IRS acceptance letter.8Internal Revenue Service. Instructions for Form 2553 Hold onto whichever you get. If the IRS later says it never received the form, that proof is what you’ll need.
What Happens After You File
The IRS should send a determination letter within roughly 60 days of receiving the form, telling you whether the election was accepted or rejected. If nothing arrives in that window, call the service center where you filed. Silence is not approval.
Some states do not automatically recognize a federal S-corporation election. A few require a separate state-level filing, and a few don’t offer S-corp treatment at all. Once you have the IRS acceptance letter, check with your state’s department of revenue or taxation to see whether a state election is also needed.
If You Missed the Deadline
Revenue Procedure 2013-30 lets many late filers still get the election treated as timely without paying for a private letter ruling.10Internal Revenue Service. Revenue Procedure 2013-30 The request must generally be filed within three years and 75 days of the intended effective date. You have to show that the entity intended to be an S-corporation as of that date, that the only defect was the late filing (not an eligibility failure), and that there was reasonable cause for the delay and you acted quickly once you found the problem.
The mechanics are simple. Complete Form 2553 the normal way, write “FILED PURSUANT TO REV. PROC. 2013-30” across the top, and attach a signed statement explaining the reasonable cause. You can send it directly to the appropriate service center, attach it to the current year’s Form 1120-S, or attach it to a delinquent prior-year return, provided all other missing returns are filed at the same time.10Internal Revenue Service. Revenue Procedure 2013-30
There is a separate exception that removes the three-year-and-75-day cap entirely. It applies when the corporation has been filing Form 1120-S consistently and the IRS hasn’t raised the issue within six months of the first S-year return being filed. For businesses that discover the problem years later, that’s usually the path.