You formed an LLC or corporation and want it taxed as an S corporation, but the Internal Revenue Service (IRS) gives you a narrow window to make that choice. File IRS Form 2553, Election by a Small Business Corporation, no more than 2 months and 15 days after the start of the tax year the election takes effect. For most calendar-year businesses, that deadline is March 15.
The official form, filing instructions, and current mailing details live on the IRS About Form 2553 page. This guide walks through eligibility, deadlines, the line-by-line filing steps, where to file, and what to do if you miss the window.
What Is IRS Form 2553?
Form 2553 is the election under Internal Revenue Code (IRC) §1362(a) to be taxed as an S corporation. It changes the tax treatment of an existing entity; it does not create one. Once approved, income, deductions, credits, and losses pass through to shareholders’ personal returns, avoiding the double taxation a C corporation pays at the entity level and again on dividends.
Corporations and eligible LLCs file Form 2553. Individuals and sole proprietors cannot: you must first form an entity. Under IRC §1362(a), the election is valid only if every shareholder on the election date consents, per 26 U.S.C. §1362. After approval, the entity files Form 1120-S as its annual S corporation return.
Who Is Eligible to File Form 2553?
Only a “small business corporation” under IRC §1361 qualifies. The entity must be domestic, have no more than 100 shareholders, hold only one class of stock, and count only allowable shareholder types. Foreign entities, partnerships, corporations, and nonresident aliens as owners all break eligibility. Every shareholder must consent in writing on the form.
| Requirement | Rule | Source |
|---|---|---|
| Domestic entity | Must be a domestic corporation or eligible domestic LLC; foreign entities are ineligible | IRS Form 2553 instructions |
| Shareholder cap | No more than 100 shareholders; a husband and wife (and their estates), and all members of a family, may count as one shareholder | IRC §1361(b)(1)(A), §1361(c)(1) |
| Allowable shareholders | Individuals (US citizens or resident aliens), certain estates, certain trusts, and exempt organizations under section 401(a) or 501(c)(3); no nonresident aliens, partnerships, or corporations | IRS Form 2553 instructions |
| One class of stock | All shares must confer identical distribution and liquidation rights; differences in voting rights are disregarded | IRC §1361(b)(1)(D), §1361(c)(4) |
| Not an ineligible corporation | Banks using the reserve method, insurance companies taxed under Subchapter L, and DISCs (Domestic International Sales Corporations) cannot elect | IRC §1361(b)(2) |
| Unanimous consent | All shareholders as of the election date must consent, signed on the form | IRC §1362(a)(2) |
The family-aggregation rule has a limit: “members of a family” means a common ancestor, lineal descendants, and their spouses, excluding anyone more than six generations removed from the youngest shareholder generation, per IRC §1361(c)(1)(B).
What Is the Deadline for Filing Form 2553?
File Form 2553 no more than 2 months and 15 days after the beginning of the tax year the election takes effect, or at any time during the preceding tax year, under IRC §1362(b). The common shorthand “the 15th day of the third month” comes straight from the statute, but the two phrasings diverge for tax years that do not start on the 1st of a month.
| Scenario | Deadline | Source |
|---|---|---|
| Calendar-year entity (tax year begins Jan 1) | March 15 of the election year; the 2-month period ends Feb 28 (29 in leap years), plus 15 days | IRS Form 2553 instructions |
| Tax year starting mid-month (e.g., Jan 7) | March 21, because the count runs from the actual start date, not a fixed calendar date | IRS Form 2553 instructions |
| Newly formed entity | 2 months and 15 days from the date it first has shareholders, acquires assets, or begins business, whichever is earliest | IRS Form 2553 instructions |
| Filing during the preceding tax year | Any time during the tax year before the one the election takes effect | IRC §1362(b)(1) |
| Filed after the current-year deadline | Automatically treated as an election for the following tax year unless late relief applies | IRC §1362(b)(3) |
The IRS instructions confirm the March 15 calendar-year result and the March 21 mid-month example, showing why the precise 2-months-15-days rule matters. Track these dates against your other filings with Commenda’s compliance calendar.
How Do You Choose the Effective Date of Election?
The effective date on Part I, Line E sets when pass-through taxation begins. For a new entity, it cannot precede the date the entity came into existence, meaning the day it first had shareholders, acquired assets, or began business. Choose a date the entity can legally support, because the IRS matches it against your formation records.
If you file late relative to the requested Line E date, the entity must qualify for late-election relief under Rev. Proc. 2013-30 (covered below) or the election defaults to the following tax year, per IRC §1362(b)(3). Automatic relief is available only when Form 2553 is filed within 3 years and 75 days of the Line E effective date.
How Do You Fill Out Form 2553? Step-by-Step Instructions
Form 2553 has four parts, and most filers complete only Part I. Enter your entity details and effective date, choose a tax year, have an officer sign, and collect shareholder consent. Parts II through IV apply only to fiscal-year requests, Qualified Subchapter S Trusts, and late classification relief. You need an Employer Identification Number (EIN) before filing.
Part I, Election Information
| Field | What to enter | Notes |
|---|---|---|
| Name, address | Entity legal name and mailing address | Use the exact registered name |
| EIN | Employer Identification Number | Required; obtain before filing |
| Date and state of incorporation | Formation date and state | Confirms domestic eligibility |
| Line E | Requested effective date | Cannot precede entity existence |
| Line F | Tax year selection | Calendar year, fiscal year, or 52-53-week year |
| Line I | Reasonable-cause statement | Only for late filings under Rev. Proc. 2013-30 |
| Officer signature | Signature of an authorized officer | Under penalties of perjury |
| Shareholder consent columns | Name, signature, stock owned or ownership percentage, date acquired, tax year end, SSN or EIN | Every shareholder must sign |
Part II, Selection of Fiscal Tax Year
Complete Part II only if the entity wants a tax year other than a required calendar year. This covers a business-purpose request or a Section 444 election, which lets certain entities keep a fiscal year in exchange for required payments. Most small businesses use a calendar year and skip this part entirely.
Parts III and IV
Part III is the Qualified Subchapter S Trust (QSST) election, completed by the trust’s income beneficiary when a QSST holds shares. Part IV holds the representations for a late corporate classification election, used when an entity makes a late entity-classification election alongside a late S corporation election.
How Do You Fill Out Form 2553 for an LLC?
An LLC uses its legal name and lists its members as shareholders in the consent columns. Members report ownership percentages rather than share counts. For a single-member LLC, the sole member signs as the sole shareholder and provides consent, which satisfies the unanimous-consent requirement on their own.
Where Do You File Form 2553?
File Form 2553 by mail or fax with one of two IRS service centers, chosen by the state of your principal office. Form 2553 cannot be e-filed on its own. Fax delivery gives you a transmission confirmation, which many filers prefer for proof of timely filing.
| If the entity is located in | Mail to | Fax | Source |
|---|---|---|---|
| CT, DE, DC, GA, IL, IN, KY, ME, MD, MA, MI, NH, NJ, NY, NC, OH, PA, RI, SC, TN, VT, VA, WV, WI | IRS Service Center, Kansas City, MO 64999 | 855-887-7734 | IRS Form 2553 instructions |
| All other states | IRS Service Center, Ogden, UT 84201 | 855-214-7520 | IRS Form 2553 instructions |
Addresses and fax numbers change between filing cycles, so confirm them against the current IRS Form 2553 instructions before you send.
What Happens After You File Form 2553?
The IRS generally issues a determination within 60 days of filing, adding 90 days if box Q1 (the fiscal-year ruling request) is checked, per the Form 2553 instructions. Approval arrives as Notice CP261, which you should keep permanently. If no notice arrives within 2 months (5 months with Q1 checked), call the IRS Business and Specialty line at 1-800-829-4933.
Once approved, an annual obligation begins. The entity files Form 1120-S each year and issues a Schedule K-1 to every shareholder. If you need more time, Form 7004 extends the 1120-S deadline. To verify status later, request a transcript from the IRS.
What If You Miss the Deadline? Late S Election Relief Under Rev. Proc. 2013-30
Rev. Proc. 2013-30 lets an entity request late-election relief within 3 years and 75 days of the intended effective date, without a private letter ruling, if it shows reasonable cause and acted diligently to correct the mistake. The revenue procedure took effect September 3, 2013, and consolidated the earlier relief procedures, per the IRS late election relief guidance.
Four conditions apply, per Rev. Proc. 2013-30: the entity intended to be an S corporation as of the effective date; it failed to qualify solely because Form 2553 was filed late; it has reasonable cause; and the entity and all shareholders reported consistently with S status for the intended year and every year since. Reasonable cause commonly includes reliance on a professional who failed to file or genuine unawareness of the requirement despite diligence; “we forgot” is weak.
To claim relief, write “FILED PURSUANT TO REV. PROC. 2013-30” in the top margin of page 1, attach a signed Reasonable Cause/Inadvertence Statement under penalties of perjury, and file the form standalone or with the first Form 1120-S. An entity that misses the 3-year-75-day window can still qualify if at least 6 months have passed since it filed its first Form 1120-S and neither it nor its shareholders received an IRS notice of a status problem in that period. If relief is denied, the election takes effect the following year.
Form 2553 vs Form 8832: What Is the Difference?
Form 8832, the Entity Classification Election, lets an LLC choose to be classified as a corporation, partnership, or disregarded entity. Form 2553 elects S corporation status specifically. The two forms answer different questions: 8832 sets the base classification, and 2553 layers S status on top.
Here is the shortcut most pages get wrong: an LLC that files a timely, valid Form 2553 is treated as having also elected corporate classification, so it generally does not file Form 8832 separately, per the Form 2553 instructions. Form 8832 stays relevant when a business wants C corporation treatment rather than S status, or when classification timing is more complex. For the C corporation contrast, see the Form 1120 guide; if you are still choosing a structure, compare LLC vs C corp.
What Are the Tax Benefits of Electing S Corp Status?
Electing S corporation status delivers two core benefits: it eliminates C corporation double taxation, and it can reduce payroll taxes on owner-employee earnings. Both flow from the pass-through structure that IRC §1362(a) creates. The savings are largest for profitable businesses where distributions comfortably exceed a reasonable salary.
How Does an S Corp Avoid Double Taxation?
A C corporation pays tax on profits at the entity level, then shareholders pay again on dividends. An S corporation’s income passes through once, taxed only on shareholders’ personal returns, under IRC §1362(a). That single layer of tax is the primary financial reason entities elect S status.
How Does Reasonable Compensation Save on Taxes?
Owner-employees split their pay into a W-2 salary subject to payroll (FICA) taxes and distributions not subject to self-employment tax. The salary must be reasonable for the role; the IRS scrutinizes artificially low salaries that dodge payroll tax. This is an audit-exposure risk, not a free deduction, so document how you set the figure.
Do States Recognize the Federal S Corp Election?
Most states follow the federal S corporation election automatically, but several require a separate state filing or tax S corporations at the entity level. Check your state before assuming federal treatment carries over, because a missed state election can undo the benefit.
| State | Requirement | Source |
|---|---|---|
| New York | Separate state election on Form CT-6 required | New York State Department of Taxation and Finance |
| New Jersey | State S corporation registration required | New Jersey Division of Taxation |
| California | 1.5% franchise tax on S corporation net income, minimum $800 | California Franchise Tax Board |
Verify each state’s current requirement against its Department of Revenue (DOR) page before filing, since rates and forms change year to year.
How Commenda Helps With Your S Corp Election and Compliance
Commenda’s incorporation product sets up your entity and supports the S corporation election, so your Form 2553 is filed with the right effective date, the right consents, and to the right service center. Its tax and accounting product then handles the annual Form 1120-S and ongoing corporate tax compliance that begin once the IRS approves your election.
You get certainty: you know exactly what to file, when it is due, and that it got done. Commenda keeps the connected filings in view too, including Form 1120-S, Form 8832 for classification questions, and Form 7004 when you need to extend the 1120-S deadline.
Book a demo to get a walkthrough of your S corp election deadlines and a filing calendar built around your tax year.
