How to Change an LLC to an S Corp: Form 2553, Deadlines, and Payroll

To change an LLC to an S corp for tax purposes, file IRS Form 2553 (Election by a Small Business Corporation) within the deadline for the tax year you want the election to start. You don’t dissolve the LLC, re-form it as a corporation, or file a separate entity classification form first. The LLC keeps its state registration, its operating agreement, and its EIN; only the way the IRS taxes the business changes. In exchange, you take on payroll, a corporate tax return, and strict eligibility rules you have to maintain every year the election is in effect.

What the Election Actually Changes

Form 2553 tells the IRS to stop taxing your LLC under its default classification and start treating it as an S corporation. A single-member LLC is normally taxed as a sole proprietorship; a multi-member LLC is taxed as a partnership. After the election, the LLC files Form 1120-S and passes income through to owners on Schedule K-1, with different rules for employment taxes and owner compensation than a partnership.¹

You do not need to file Form 8832 first. Form 8832 is for LLCs that want to be taxed as a C corporation. When you file Form 2553, the IRS treats it as an implicit election to be classified as a corporation and then applies S corporation treatment. One form, one step.²

Your state-level LLC is unchanged. Same articles of organization, same operating agreement, same EIN. What changes is federal tax classification, and that alone brings new obligations covered below.

Eligibility Requirements Your LLC Must Meet

Before you file, the LLC has to satisfy every requirement in 26 U.S.C. § 1361. Miss any one, and the IRS will reject the election.³

No more than 100 owners. Family members and their estates can be counted as a single shareholder.
Owners must be individuals, qualifying estates, or a Qualified Subchapter S Trust or Electing Small Business Trust. Partnerships, corporations, and most LLCs cannot own an interest.
Every owner must be a U.S. citizen or resident. A nonresident alien member disqualifies the LLC.
One class of ownership interests. All interests must carry identical rights to distributions and liquidation proceeds. Voting and non-voting interests are allowed; preferred interests that give priority to some owners are not.

These rules aren’t just a gate at the front. You have to keep meeting them for every year the election is in effect. Adding a corporate member, an overseas investor, or a second class of interests terminates the election automatically as of the disqualifying date.

How to Fill Out Form 2553

The form is short, but a few spots cause most of the rejections.⁴

You’ll need the LLC’s legal name as registered with the state, its mailing address, its EIN, the date the LLC was formed, and the state of formation. If the LLC doesn’t have an EIN yet, apply for one first.

The shareholder consent section is where things go wrong. Every member has to sign the form and provide full legal name, residential address, Social Security number or taxpayer identification number, ownership percentage, and the date they acquired their interest. Because LLCs don’t issue stock, enter ownership percentages instead of share counts.

In community property states, a member’s spouse may need to sign too, even if the spouse isn’t listed as an owner, because community property law can give the spouse a legal interest in the units. Missing signatures are one of the most common reasons elections get rejected. If any former members held an interest during the current tax year, they may also need to consent.

When to File

Under 26 U.S.C. § 1362, you have two windows to file Form 2553 so the election takes effect for a given tax year:⁵

Any time during the prior tax year.
On or before the 15th day of the third month of the tax year you want the election to start. For a calendar-year LLC, that’s March 15.

Miss both windows, and the election takes effect the following tax year unless you qualify for late-election relief.

Newly Formed LLCs

A brand-new LLC’s first tax year starts on the earliest date the entity had members, had assets, or began doing business. The two-month-and-15-day clock runs from that date, not from January 1. An LLC whose first tax year starts April 10 has until June 24 to file for that year. Filing before the LLC’s tax year actually begins doesn’t count.

Late Election Relief

If you miss the deadline, Revenue Procedure 2013-30 lets you request retroactive S corp status. You have to show reasonable cause for the late filing, confirm the LLC met all eligibility requirements for the entire period, and confirm that the LLC and its owners filed tax returns consistent with S corp treatment.⁶ A qualifying late election can be filed with the LLC’s first Form 1120-S rather than submitted separately.

Keep your postmark receipt or fax confirmation. If timeliness is ever disputed, that’s your only proof.

Where to Send Form 2553

Form 2553 cannot be e-filed on its own. Mail or fax the completed form to the IRS service center assigned to your state. LLCs in most of the eastern half of the country file with the Kansas City service center; LLCs in the western and southern states file with the Ogden service center. The current addresses and fax numbers for each group are listed in the “Where To File” section of the Form 2553 instructions.⁷

One exception: a late election filed under Revenue Procedure 2013-30 can be attached as a PDF to a timely e-filed Form 1120-S instead of being mailed or faxed on its own.² If you fax the form, keep the original in your permanent records.

After You File

The IRS generally processes Form 2553 within 60 days.⁷ If the election is accepted, you’ll receive Notice CP261, a one-page letter confirming the S corp status and its effective date.⁸ Keep it permanently. Your tax preparer will ask to see it, and it’s the document that resolves any later question about filing status.

If the election is rejected, you’ll get a separate notice with the reason. Common ones: a missing shareholder signature, an ineligible owner, or a filing that arrived after the deadline. Some are fixable; a missing signature can often be corrected and resubmitted.

If 60 days pass with no response, call the IRS Business and Specialty Tax Line. Silence isn’t acceptance.

New Obligations Once the Election Takes Effect

An LLC that’s electing S corp status picks up compliance work it didn’t have before.

Payroll for Owner-Employees

Any member who works in the business has to be on payroll and receive a W-2. That means federal and state payroll tax withholding, quarterly Form 941 (Employer’s Quarterly Federal Tax Return), annual Form 940 (Federal Unemployment Tax Return), and W-2s issued by January 31 each year.⁹ Very small employers with total annual employment tax liability of $1,000 or less may file Form 944 annually instead of quarterly 941s. Most S corp owners run this through a payroll service.p>

Owner compensation isn’t optional. The IRS requires any S corp owner who performs services for the business to receive “reasonable compensation” as wages before taking distributions, based on factors like training, duties, hours worked, and what comparable businesses pay for similar work.¹⁰ Paying yourself nothing, or a token amount, while taking large distributions invites the IRS to reclassify the distributions as wages and assess back employment taxes with penalties and interest.

Annual Form 1120-S

The LLC files Form 1120-S by the 15th day of the third month after the end of its tax year. For calendar-year filers, that’s March 15. By the same date, each member gets a Schedule K-1 showing their share of income, deductions, and credits.¹¹ Form 7004 gets you an automatic six-month extension to file the return, though it doesn’t extend the K-1 deadline for members.

Late filing triggers a penalty calculated per shareholder per month the return is late. Owners used to filing a Schedule C with their April 15 personal return often miss this. The corporate deadline is a month earlier.

Keeping the Election Alive

You have to keep meeting every § 1361 requirement each year. Before adding a new member, verify they’re eligible. If the operating agreement gets amended, make sure it doesn’t create a second class of ownership interests. There’s no warning system; the election terminates automatically on the date of a disqualifying event.³

A separate set of rules on passive investment income and built-in gains applies only to LLCs that had accumulated earnings from a prior C corp period or that acquired assets from a C corporation. A typical LLC that was taxed as a disregarded entity or partnership before electing S corp status generally isn’t affected.¹²

Check Your State Before You Rely on the Federal Election

The federal election only changes IRS treatment. Most states automatically recognize it for state income tax purposes and don’t require a separate filing. A few states, including New York, historically required a separate state-level S corp election. Confirm with your state revenue department before assuming the federal filing is enough.

Some states also impose entity-level taxes on S corporations that don’t apply to LLCs taxed as partnerships. California, for example, charges a 1.5% income tax on S corporations plus the $800 minimum franchise tax. Those state costs can reduce the net benefit of the election, so factor them in before filing.

Revoking the Election Later

The election isn’t permanent. Owners holding more than half the LLC’s ownership interests can revoke it by filing a statement with the IRS.⁵ A revocation filed on or before March 15 takes effect that January 1. Filed after March 15, it takes effect the following January 1, unless the revocation specifies a future date.

After a revocation, the LLC generally can’t re-elect S corp status for five years without IRS consent. Treat the decision as deliberate, not a reaction to one slow year.

1
Internal Revenue Service. About Form 2553, Election by a Small Business Corporation
2
Internal Revenue Service. Filing Requirements for Filing Status Change
3
Office of the Law Revision Counsel. 26 USC 1361 – S Corporation Defined
4
Internal Revenue Service. Instructions for Form 2553 (Rev. December 2020)
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Office of the Law Revision Counsel. 26 USC 1362 – Election; Revocation; Termination
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Internal Revenue Service. Revenue Procedure 2013-30
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Internal Revenue Service. Instructions for Form 2553 (12/2020) – Where To File
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Internal Revenue Service. CP261 Notice – You Will Be Treated as an S Corporation
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Internal Revenue Service. Forms 940, 941, 944 and 1040 (Sch H) Employment Taxes
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Internal Revenue Service. S Corporation Compensation and Medical Insurance Issues
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Internal Revenue Service. Publication 509 (2026), Tax Calendars
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Office of the Law Revision Counsel. 26 USC 1374 – Tax Imposed on Certain Built-In Gains