Tax Election Guide
S-Corp Election: Form 2553 Filing Guide (2026)
Electing S-Corp status can save you thousands in self-employment taxes each year. This guide covers Form 2553 instructions, deadlines, qualification requirements, tax benefits, and why you need an EIN before filing.
Short Answer
To elect S-Corp status, file Form 2553 (Election by a Small Business Corporation) with the IRS within 75 days of formation or by March 15 for existing entities. S-Corp status lets you split income into salary and distributions, saving 15.3% self-employment tax on the distribution portion. You need an EIN before filing Form 2553. Only US citizens and resident aliens qualify as S-Corp shareholders.
What Is an S-Corp Election and Why Does It Matter?
Tax Classification, Not Entity Type
An S-Corp election is a tax classification choice made by filing IRS Form 2553. It does not create a new type of business entity. Instead, it changes how the IRS taxes your existing corporation or LLC. Without the election, a corporation is taxed as a C-Corp (double taxation on corporate profits and shareholder dividends) and an LLC is taxed as a sole proprietorship or partnership. With the S-Corp election, your entity is taxed as a pass-through entity with a critical difference: you can split income between salary and distributions.
15.3% Self-Employment Tax Savings
The S-Corp election matters because of self-employment tax. As a sole proprietor or single-member LLC without the election, you pay self-employment tax (Social Security and Medicare, totaling 15.3%) on all net business income. With S-Corp status, you pay yourself a reasonable salary (which is subject to employment tax) and take the remaining profits as distributions (which are not subject to self-employment tax). For profitable businesses, this saves thousands of dollars annually.
S-Corp vs C-Corp: Full Tax Comparison
| Factor | S-Corp | C-Corp |
|---|---|---|
| Federal Corporate Tax Rate | 0% (pass-through to shareholders) | 21% flat rate |
| Double Taxation | No -- income taxed once on personal return | Yes -- corporate level + shareholder dividends |
| Self-Employment Tax on Distributions | No (distributions exempt from 15.3% SE tax) | N/A (dividends taxed at 0-20% capital gains rate) |
| Maximum Shareholders | 100 | Unlimited |
| Non-Resident Alien Shareholders | Not allowed | Allowed |
| Stock Classes | One class only (voting/non-voting OK) | Multiple classes allowed |
| Tax Return Form | Form 1120-S + Schedule K-1 | Form 1120 |
| Reasonable Salary Requirement | Yes (IRS enforced, typically 40-60% of profit) | No specific requirement |
| Best Annual Profit Threshold | $50,000+ (tax savings outweigh compliance costs) | Any amount (no election needed for corps) |
| Payroll Required? | Yes (must run payroll for owner salary) | Only if paying employees/officers |
When S-Corp Election Makes Financial Sense
The S-Corp election is one of the most commonly used tax optimization strategies for small businesses in the United States. It works best for businesses earning at least $50,000 to $60,000 in annual profit, where the tax savings on distributions outweigh the additional costs of S-Corp compliance (payroll processing, additional tax returns, and reasonable salary documentation). For a deeper look at getting an EIN for an S-Corp, see our dedicated guide.
How Do You File Form 2553 Step by Step?
Step 1: Get Your EIN
Form 2553 requires your entity's EIN in the header. If you do not have an EIN yet, obtain one before filing. US residents can apply online at irs.gov. Non-residents file Form SS-4 by fax, or use ein.so for $49 (Standard, 14 days) or $97 (Express, 7 days). See our guide on EIN for corporations.
Step 2: Complete Part I of Form 2553
Enter your corporation or LLC name, EIN, address, date incorporated or formed, state of incorporation, and the tax year you want the S-Corp election to begin. Select the effective date carefully: it must fall within the 75-day window or the beginning of the tax year if you are filing by March 15.
Step 3: Get All Shareholders to Sign
Every shareholder must consent to the S-Corp election by signing the form. Part I includes a shareholder consent section where each shareholder lists their name, address, SSN, number of shares, date acquired, and tax year end. If there are more shareholders than the form accommodates, attach a continuation sheet with the same information and signatures.
Step 4: Complete Parts II-IV (If Applicable)
Part II applies if you want a fiscal year end different from December 31. Part III applies if you are making a qualified Subchapter S trust (QSST) election. Part IV applies if you are making a late election and need to provide a reasonable cause statement. Most small businesses only need to complete Part I.
Step 5: Mail or Fax to the IRS
Mail Form 2553 to the IRS service center for your state (listed in the Form 2553 instructions) or fax it to (855) 887-7734. Keep a copy of the signed form and your proof of mailing or fax confirmation. The IRS sends an acceptance letter (CP261) within 60 days confirming your S-Corp election. If you do not receive confirmation, call (800) 829-4933.
What Are the Form 2553 Filing Deadlines?
Form 2553 Deadline Calendar
| Scenario | Deadline | Effective Date | Example (2026) |
|---|---|---|---|
| New entity (S-Corp from day 1) | Within 75 days of formation | Date of formation | Formed Jan 15 = deadline Mar 31, 2026 |
| Existing entity (current tax year) | March 15 of that tax year | January 1 of that year | File by Mar 15, 2026 for tax year 2026 |
| Missed March 15 deadline | March 15 of next year | January 1 of next year | Filed Apr 1, 2026 = effective Jan 1, 2027 |
| Late election relief (Rev. Proc. 2013-30) | 3 years + 75 days from intended date | Original intended date (if approved) | Requires reasonable cause statement |
| Non-calendar fiscal year | 2 months + 15 days into fiscal year | First day of fiscal year | Jul 1 fiscal year = deadline Sep 15 |
The 75-Day Rule for New Entities
There are two primary deadlines for filing Form 2553. For new entities that want S-Corp status from the date of formation, you must file within 75 days of formation. This means if you formed your LLC or corporation on January 15, your deadline is March 31. If you miss this window, the S-Corp election takes effect the following tax year instead.
March 15 Deadline for Existing Entities
For existing entities that want S-Corp status starting the next tax year, the deadline is March 15 of the year before the election takes effect. For example, to have S-Corp status for tax year 2027, you must file Form 2553 by March 15, 2027. Filing after March 15 means the election does not take effect until tax year 2028 (unless you qualify for late election relief).
Late Election Relief Under Revenue Procedure 2013-30
If you miss both deadlines, all is not lost. The IRS grants late election relief under Revenue Procedure 2013-30 if you file within 3 years and 75 days of the intended effective date. You must include a reasonable cause statement explaining why you filed late. Common acceptable reasons include reliance on a tax professional who failed to file, administrative oversight, or not being aware of the election requirement. The IRS approves late elections frequently when reasonable cause is demonstrated.
How Much Tax Does S-Corp Election Actually Save?
Social Security and Medicare Tax Breakdown
The primary tax benefit of S-Corp election is the reduction in self-employment tax. Self-employment tax consists of Social Security tax (12.4% on income up to $168,600 in 2026) and Medicare tax (2.9% on all income, plus 0.9% Additional Medicare Tax on income over $200,000). Without S-Corp status, all net business income is subject to this combined 15.3% tax.
Example: $12,240 Annual Savings on $150,000 Profit
With S-Corp status, you split your business income into two streams. First, you pay yourself a "reasonable salary" that is subject to employment taxes. Second, you take the remaining profit as distributions that are not subject to self-employment tax. For example, if your business nets $150,000 and you pay yourself a $70,000 salary, the $80,000 in distributions avoids the 15.3% self-employment tax. That is a savings of about $12,240 per year.
Reasonable Salary: The IRS Requirement You Cannot Skip
The "reasonable salary" requirement is critical. The IRS requires that you pay yourself a salary that is comparable to what someone in your role and industry would earn. You cannot pay yourself a $10,000 salary on $200,000 in profits just to minimize employment taxes. The IRS audits S-Corp salary levels, and paying an unreasonably low salary triggers penalties and back taxes. Most tax advisors recommend setting salary at 40% to 60% of total business income for most small businesses.
Who Qualifies for S-Corp Status?
5 Mandatory Eligibility Requirements
The IRS imposes strict eligibility requirements for S-Corp status. Your entity must meet all of the following criteria: it must be a domestic entity (formed in the United States), it must have no more than 100 shareholders, all shareholders must be individuals, certain trusts, or estates (no corporations, partnerships, or LLCs as shareholders), no shareholder can be a non-resident alien, and the entity can have only one class of stock.
Non-Resident Alien Shareholder Restriction
The non-resident alien restriction is particularly important for international entrepreneurs. If any shareholder of your corporation or any member of your LLC is not a US citizen or US resident alien, you cannot elect S-Corp status. This means most foreign-owned US businesses must be taxed as either a C-Corp (for corporations) or a partnership/disregarded entity (for LLCs). See our guide on who needs an EIN for entity-specific guidance.
The one-class-of-stock rule means all shares must confer identical rights to distributions and liquidation proceeds. You can have voting and non-voting shares (these are not considered different classes), but you cannot have shares with different economic rights. Straight debt that meets certain requirements is also not treated as a second class of stock.
Why Do You Need an EIN Before Filing Form 2553?
Form 2553 requires your entity's EIN in the identification section at the top of the form. The IRS uses the EIN to match your S-Corp election to your entity's tax account. Without an EIN, the IRS cannot process your Form 2553. This makes obtaining an EIN the essential first step before making the S-Corp election.
Given the 75-day deadline for new entities, timing matters. If you form your LLC or corporation and need S-Corp status from day one, you should apply for your EIN immediately after formation. US residents can get an EIN online in minutes. Non-residents filing by fax need 7 to 14 business days (or 7 days with ein.so Express). Factor this processing time into your 75-day deadline calculation.
ein.so helps you get your EIN quickly so you can file Form 2553 on time. Our Standard service delivers your EIN in 14 business days for $49. Our Express service delivers in 7 business days for $97. Once you have your EIN, you can immediately complete and file Form 2553. Do not let the EIN processing time eat into your 75-day S-Corp election window. Apply for your EIN today.
Frequently Asked Questions
What is an S-Corp election?
An S-Corp election is a tax classification choice you make by filing Form 2553 with the IRS. It allows your corporation or LLC to be taxed as an S-Corporation, which passes income through to shareholders and avoids double taxation. The election changes how you are taxed but does not change your legal entity structure.
When is the deadline to file Form 2553?
For new entities, you must file Form 2553 within 75 days of formation (or within 75 days of the start of the tax year you want the election to take effect). For existing corporations that want to elect S-Corp status for the next tax year, the deadline is March 15 of the year before the election takes effect. Late elections are possible with reasonable cause.
Can an LLC elect S-Corp status?
Yes. An LLC can elect S-Corp tax treatment by filing Form 2553 with the IRS. The LLC remains a limited liability company under state law, but it is taxed as an S-Corporation for federal income tax purposes. This is one of the most popular tax strategies for profitable LLCs because it reduces self-employment tax.
Do I need an EIN to file Form 2553?
Yes. Form 2553 requires your entity's EIN (Employer Identification Number). You must obtain your EIN before filing the S-Corp election. If you do not have an EIN yet, ein.so can help you get one for $49 (Standard, 14 business days) or $97 (Express, 7 business days).
How does S-Corp election save on taxes?
S-Corp election saves money by splitting your income into salary and distributions. You pay self-employment tax (15.3%) only on your salary, not on distributions. For example, if your business earns $150,000 and you pay yourself a $70,000 salary, you save self-employment tax on the $80,000 in distributions. The savings can be $10,000 or more per year.
What are the requirements to qualify for S-Corp status?
To qualify for S-Corp status, your entity must be a domestic corporation or LLC, have no more than 100 shareholders, have only allowable shareholders (individuals, certain trusts, and estates — no partnerships, corporations, or non-resident aliens), have only one class of stock, and not be an ineligible corporation (certain financial institutions, insurance companies, etc.).
Can a non-resident elect S-Corp status?
No. S-Corp shareholders must be US citizens or US resident aliens. Non-resident aliens cannot be shareholders in an S-Corporation. If your LLC or corporation has any non-resident alien shareholders, you cannot make the S-Corp election. You would instead be taxed as a C-Corporation or a partnership (for multi-member LLCs).
What happens if I miss the Form 2553 deadline?
If you miss the 75-day or March 15 deadline, you can still file Form 2553 with a reasonable cause statement explaining why you filed late. The IRS frequently grants late election relief under Revenue Procedure 2013-30 if you file within 3 years and 75 days of the intended effective date. Attach a statement explaining the reasonable cause to your Form 2553.
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