40+ S Corp to LLC Conversion Statistics, Tax Facts & Data Points for 2025–2026

S Corp to LLC Conversion: Quick Answer

Converting an S Corp to an LLC gives you unlimited shareholders, flexible profit distributions, and fewer corporate formalities — but it can trigger the built-in gains tax (21% corporate rate) on appreciated assets if done within 5 years of the S election. The average conversion costs $500–$2,000 in state filing fees and legal/accounting work, not counting potential tax liability on appreciated assets.

Key rule: If your S Corp previously operated as a C Corp, consult a tax advisor before converting — accumulated C Corp earnings and profits can create unexpected dividend income for shareholders.

Over 5 million S corporations are active in the United States — and a growing number of owners are asking whether converting to an LLC makes sense. The answer depends on your shareholder structure, tax situation, and how long you’ve held appreciated assets.

This guide aggregates 40+ data points from the IRS, SBA, Census Bureau, and legal research to give you a complete picture of the S Corp-to-LLC landscape: the numbers behind entity formation trends, the tax rules that make or break a conversion, and the step-by-step process for doing it right.

⚡ Key Takeaways

There are ~5 million active S corporations in the US — the most common corporate entity type.
LLCs now make up 85% of all new business formations nationally, overtaking S Corps in popularity.
The built-in gains tax rate is 21% (highest corporate rate) and applies for 5 years after S election.
S Corps can save $5,000–$50,000+ per year in self-employment taxes — a benefit potentially lost after converting to an LLC taxed as a partnership.
There are 21.6 million active LLCs in the US — making it the most common business entity by far.
S Corps are capped at 100 shareholders who must be US citizens or residents — LLCs have no such limit.

Table of Contents

1 1. S Corp & LLC By the Numbers
2 2. Why Business Owners Convert: Top Reasons
3 3. Tax Implications: Data & Key Rules
4 4. S Corp Tax Savings You May Be Giving Up
5 5. S Corp vs. LLC: Full Comparison Table
6 6. How to Convert: Step-by-Step
7 7. When Conversion Doesn’t Make Sense
8 8. Frequently Asked Questions
9 Sources

1. S Corp & LLC By the Numbers

Understanding the scale of S Corps and LLCs in the US economy puts the conversion decision in context. Both structures dominate the small business landscape — but their growth trajectories are diverging.

Statistic	Data Point	Source
Active S corporations in the US	~5 million	IRS SOI Statistics
Active LLCs in the US (2024)	21.6 million	All Around Worlds / Census Bureau
LLCs as % of all small businesses	~43%	All Around Worlds / Census Bureau
LLCs as % of new formations (2023)	85%	SmallBizStatistics.com
New business applications in 2023 (record high)	5.5 million	US Census Bureau BFS
S Corp shareholder limit	100 max (US citizens/residents only)	IRS
LLC member limit	Unlimited (any nationality)	IRS
S Corp growth rate 2020–2021	+6.0% (partnership LLCs)	IRS SOI / Barbara Weltman

The trend is clear: LLCs have eclipsed S Corps as the go-to formation choice for new businesses. But millions of existing S Corp owners still find the structure works for them — particularly because of the self-employment tax savings that LLCs taxed as partnerships cannot replicate.

2. Why Business Owners Convert: Top Reasons

S Corp restrictions that don’t matter at founding often become real constraints as a business grows. Here are the most common triggers for a conversion:

Reason to Convert	The S Corp Constraint	What LLC Allows
Adding foreign investors	Shareholders must be US citizens or permanent residents	No nationality restrictions on members
Bringing on more than 100 investors	Hard cap of 100 shareholders	Unlimited members
Flexible profit sharing	Distributions must be proportional to ownership %	Disproportionate distributions allowed via operating agreement
Multiple equity classes	Only one class of stock permitted	Multiple membership interest classes with different economic rights
Reduce administrative burden	Annual meetings, board resolutions, formal minutes required	Minimal formalities; governed by operating agreement
Accepting corporate investors	Corporations, partnerships, and most trusts cannot be shareholders	Any entity type can be a member

Sources: IRS – S Corporations | Wolters Kluwer – S Corp vs. LLC | LegalZoom – S Corp vs. LLC

3. Tax Implications: Data & Key Rules

The tax consequences of converting an S Corp to an LLC are the most complex part of the decision. Get these wrong and the conversion costs far more than it saves.

Built-In Gains Tax (IRC § 1374)

Rule	Detail	Source
Built-in gains tax rate	21% (highest corporate rate, IRC § 11(b))	26 U.S.C. § 1374
Recognition period	5 years from first day of S election	PATH Act 2015 / 26 U.S.C. § 1374
Historical recognition period (pre-2015)	10 years	26 U.S.C. § 1374
Applies to	Asset appreciation that accrued during C Corp years before S election	IRS Schedule D (Form 1120-S) Instructions
Triggered by	Sale, distribution, or conversion of appreciated assets within recognition period	ESOP Partners

C Corp Earnings & Profits (E&P) Risk

If your S Corp was previously a C Corp, it may carry accumulated earnings and profits from the C Corp years. Converting to an LLC while holding C Corp E&P can reclassify distributions as dividend income for shareholders — taxed at ordinary income rates up to 37%, not the favorable pass-through rates you’re used to. [Source: UpCounsel]

Conversion Methods & Their Tax Treatment

Method	How It Works	Tax Risk Level	Availability
Statutory Conversion	File a Certificate of Conversion with your state — simplest path	Moderate — asset transfer may trigger BIG tax	Most states
Statutory Merger	Form a new LLC, merge the S Corp into it, dissolve the corp	Higher — treated as liquidation in some states	All states
Non-Statutory Conversion	Form LLC, transfer S Corp assets, dissolve corp	Highest — IRS may treat as taxable liquidation	All states (avoid if possible)

Sources: Nolo – Converting a Corporation to an LLC | UpCounsel – Convert S Corp to LLC

4. S Corp Tax Savings You May Be Giving Up

Before converting, you need to know exactly what you’re walking away from. The S Corp salary/distribution strategy can be worth tens of thousands of dollars annually — and converting to an LLC taxed as a partnership eliminates it entirely for active members.

Scenario	S Corp Annual Tax Savings	Basis
$100K net income, $40K salary	~$9,180/yr	15.3% SE tax avoided on $60K distribution
$200K net income, $80K salary	~$18,360/yr	15.3% SE tax avoided on $120K distribution
Typical S Corp owner (range)	$5,000–$50,000+/yr	Gusto S Corp Tax Savings Calculator
S Corp election break-even (income threshold)	~$80,000+ net income	TurboTax
Self-employment tax rate (LLC partnership)	15.3% on ALL active income	IRS

Key insight: An LLC can still elect S Corp tax treatment after conversion by filing Form 2553. This lets you operate as an LLC (for structure flexibility) while keeping the salary/distribution tax strategy intact. Many business owners choose this path specifically to avoid losing the SE tax savings.

5. S Corp vs. LLC: Full Comparison Table

Factor	S Corp	LLC
Max shareholders/members	100	Unlimited
Foreign ownership allowed	❌ No	✓ Yes
Corporate/entity shareholders	❌ Generally no	✓ Yes
Multiple equity classes	❌ One class only	✓ Multiple classes allowed
Disproportionate distributions	❌ Must be proportional	✓ Allowed
Corporate formalities required	✓ Yes (meetings, minutes)	Minimal
SE tax on owner income	Only on salary portion	All active income (15.3%)
Tax treatment flexibility	S Corp only	Sole prop, partnership, C Corp, or S Corp
Liability protection	✓ Yes	✓ Yes
Pass-through taxation	✓ Yes	✓ Yes (by default)

Sources: IRS – S Corporations | Wolters Kluwer | SBA – Choose a Business Structure

6. How to Convert: Step-by-Step

Most states allow a statutory conversion — the most straightforward path. Here’s the full process:

Step	Action	Notes
1	Vote and document the decision	Shareholders formally approve per bylaws; document in corporate minutes
2	Review built-in gains exposure	Work with a CPA — if within 5-year recognition period, calculate BIG tax liability before proceeding
3	Check your state’s conversion process	Verify current rules with the Secretary of State — some states still require merger method
4	File state conversion documents	Certificate of Conversion + LLC Articles of Organization; state filing fees typically $50–$500
5	Obtain a new EIN	IRS treats conversion as a new entity; apply via IRS.gov (free, immediate online)
6	Decide on LLC tax election	File Form 2553 to keep S Corp tax treatment, or default to partnership/disregarded entity treatment
7	Update all business records	Bank accounts, contracts, licenses, vendor accounts, payroll registrations
8	File final S Corp tax return	S Corp tax year closes on conversion date; file Form 1120-S for the short year

Sources: IRS – S Corporations | Swyft Filings | Nolo

7. When Conversion Doesn’t Make Sense

For most profitable S Corps, the math favors staying put. Here are the scenarios where conversion would likely cost you more than it saves:

Situation	Why Conversion Hurts
Net income above $80K using salary/distribution split	Switching to LLC partnership taxation makes all active income subject to 15.3% SE tax — you lose thousands annually
Within 5 years of S election with appreciated assets	Built-in gains tax at 21% corporate rate can be triggered on the conversion
S Corp with C Corp history and accumulated E&P	Distributions may be reclassified as dividends — taxed at ordinary income rates up to 37%
Shareholders with suspended S Corp losses	Unused losses from basis limitations may be permanently lost on conversion

The solution in most of these cases: elect S Corp tax treatment for the new LLC. You get the structural flexibility of an LLC while keeping the tax advantages of the S Corp. Our CFO advisory team regularly models this comparison for clients before any entity change is made.

If your books need cleanup before a conversion — or you need QuickBooks reconfigured for a new entity — our bookkeeping services handle the financial transition.

Thinking About Converting Your S Corp?

CentsIQ provides bookkeeping and CFO advisory support for businesses navigating entity changes in Seattle, Portland, and Memphis. We’ll model the tax impact before you file anything.

Schedule a Free Consultation →

8. Frequently Asked Questions

Can an LLC keep S Corp tax treatment after conversion?

Yes. After converting to an LLC, you can file Form 2553 to elect S Corp tax treatment. The legal entity becomes an LLC while the tax structure stays the same — you keep the salary/distribution split and the self-employment tax savings.

Does converting from S Corp to LLC trigger a taxable event?

It can. The built-in gains tax (21% corporate rate) applies to appreciated assets if the conversion happens within 5 years of the S election. C Corp accumulated earnings and profits can also create dividend income. Always work with a tax advisor before converting.

How long does an S Corp to LLC conversion take?

State processing times range from a few days to a few weeks. Expedited filing is available in most states. Updating all downstream records — bank accounts, contracts, licenses, payroll registrations — typically takes longer than the state filing itself.

What happens to S Corp suspended losses after converting to an LLC?

Suspended losses that couldn’t be deducted due to basis limitations may be permanently lost upon conversion. This is one of the most overlooked tax costs of an S Corp-to-LLC conversion and should be reviewed before proceeding.

Do I need a new EIN when converting from S Corp to LLC?

Yes. The IRS treats the conversion as a new entity, so you’ll need a new Employer Identification Number and a new entity classification election. The process is free and can be completed online at IRS.gov.

How many S corporations are there in the United States?

Approximately 5 million active S corporations are registered in the United States. There are approximately 21.6 million active LLCs, and LLCs now account for 85% of all new business formations.