If you have been operating a profitable sole proprietorship, congratulations. As your company grows, parts of that structure may stop serving you, especially the lack of legal separation between you and the business.
When a business is not a separate legal entity, its debts and legal obligations can reach your personal assets. Incorporating creates a shield and can unlock tax planning options. An S corporation is often the next step for sole proprietors because it pairs liability protection with potential tax savings. This guide explains the decision points and the steps to convert.
Business entity types
There are five common structures. Here is a quick refresher.
Entity | What it is | Key tradeoffs |
Sole proprietorship | Default for a single owner who has not formed another entity | Simple setup, no liability shield |
Partnership | Two or more owners operating a business | Flow through taxes, no liability shield without an LLP |
Limited liability company | Separate legal entity with flexible tax choices | Liability shield, can elect S or C taxation |
S corporation | Corporation that is taxed as a pass through | Liability shield, payroll for owners, compliance duties |
C corporation | Separate legal entity that pays corporate tax | Unlimited owners and fundraising options, most formalities |
Each entity type has benefits and costs. For growing firms seeking protection and tax control, an LLC or an S corporation is often attractive.
Video: Which Business Entity is Right for You?
Which Business Entity is RIGHT for You? Comparing S-Corps to All the Others
S corp vs LLC
Sole proprietors usually compare these two when moving up the formality ladder. Both can be pass-through and both limit owner liability, but they differ in operations and tax mechanics.
Management structure
LLCs are flexible. You can be member managed or manager managed. S corporations must maintain a board of directors and corporate officers and keep corporate records.
Taxation structure
S corporations are pass-through by rule. LLCs can remain pass through or elect corporate taxation. In a pass through, income and deductions flow to owners who report them on personal returns.
S corporations can have up to 100 shareholders who may take distributions of profits. Distributions are generally not subject to employment taxes up to basis and other limits. LLCs offer the choice to keep pass through taxation or elect corporate treatment for a different strategy.
Self employment tax
S corporation owners pay self employment taxes only on wages taken as salary. Remaining profit that flows through is not subject to employment taxes. In a default LLC taxed as a partnership or disregarded entity, the full profit is usually subject to self employment tax.
Formal requirements
LLCs have fewer formalities. S corporations require meetings, minutes, officer roles, and more documentation. That extra process can be helpful as you scale, but it adds administrative work.
S corp vs LLC: At a glance
Feature | S corporation | LLC |
Liability shield | Yes | Yes |
Default tax | Pass through | Pass through with option to elect corporate |
Owner pay | Salary plus distributions | Draws or salary if taxed as S |
Self employment taxes | On salary only | Often on all profit unless electing S |
Governance | Board and officers | Flexible by operating agreement |
Benefits of an S corp
You gain a liability shield similar to an LLC and you can also fine tune taxes.
Corporate benefits without double taxation
S corporations allow profit distributions and share ownership while avoiding corporate level federal income tax. C corporations pay a corporate tax and then owners pay tax on dividends. An LLC can elect to be taxed as an S corporation, but the S rules are native to the corporation structure.
Lower exposure to self employment tax
Consider the following example using the same revenue and expenses to show how payroll and self employment taxes differ.
Sole prop | S corp | |
|---|---|---|
Total revenue | $75,000 | $75,000 |
Business expenses | $40,000 | $40,000 |
Owner salary | N/A | $25,000 |
Employer payroll taxes | N/A | $2,346.50 |
Taxable income after salary | $35,000 | $7,652.50 |
Self-employment tax | $4,945.34 | N/A |
Employee payroll tax withheld | N/A | $1,912.50 |
Total payroll-related taxes paid | $4,945.34 | $4,259 |
S corporation owners can combine a reasonable salary with profit distributions that are not subject to employment taxes. Be sure to avoid setting the salary too low. See our guide on paying yourself as an S corporation for compliance tips.
Growth opportunities
An S corporation permits up to 100 shareholders. The structure and recordkeeping make the business appear more established to lenders, partners, and clients. The added formality supports due diligence as you grow.
Video: Signs That You Should Switch to an S-Corp
Is It Time to Switch to an S-Corp? Look for THESE SIGNS AND BENEFITS
Signs you should consider an S corp
Look for these triggers as you evaluate the move from sole proprietorship.
Rising liability risk
Consistent profit growth that increases your tax burden
Interest from potential investors or the need for outside funding
Is an S corp right for your business? Factors to consider
Before you form an S corp, confirm that you can support the added costs and the cash flow needed for payroll.
Typical recurring costs
Owner salary
Employer payroll taxes
Payroll service fees
Tax preparation for corporate and personal returns
State annual fees
Bookkeeping and accounting support
Insurance and legal expenses
Evaluate whether the potential savings exceed these costs. Model scenarios with your current revenue, expenses, and a proposed salary. An accountant can help you determine the profit level that makes the election worthwhile.
Also map your future plans.
Will you seek investors
Do you anticipate a merger or acquisition
Will you add partners
An S corporation offers structure and flexibility for many small firms, but ownership and stock class limits may not fit every growth plan.
3 steps to convert from a sole prop to S corp
Once you decide to proceed, follow these core steps.
Step 1: Form an LLC
You will first register as a limited liability company in most cases before making the S election.
Choose a business name
File Articles of Organization with your state
Create an operating agreement that defines roles and processes
Register for state level taxes if required
Apply for an EIN and any required licenses and permits
Step 2: Determine eligibility
To qualify for S corporation status your company must meet IRS rules.
Domestic corporation or eligible entity
One class of stock
No more than 100 shareholders
No nonresident alien shareholders
Shareholders are individuals certain trusts and estates
Step 3: File IRS Form 2553
Form 2553 is Election by a Small Business Corporation. Filing it converts your LLC for tax purposes into an S corporation. The key section is Election Information where you will list legal name, EIN address, date of incorporation, the effective date of the election and other details. Submit the form to the IRS and retain the approval notice for your records.
Step 3: File IRS form 2553
IRS form 2553 is also known as Election by a Small Business Corporation. Filing this form will convert your single-member LLC to an S corp. The main section you need to worry about is your Election Information, where you will list your name, EIN, address, the date of incorporation, your choice of Subchapter S election effective date, and just a few more items. Submit this form, and you’re on your way to S corp-hood.
Video: The 3 Steps to Convert to an S-Corp
Convert Your Sole Prop to an S-Corp in JUST 3 Easy Steps!
FAQs
Do I have to pay myself a salary as an S corporation owner?
Yes, if you work in the business you must take reasonable compensation through payroll.
Can I skip payroll in a slow month?
No, owners who provide services are expected to run regular payroll. Skipping runs can create compliance risk.
Can an LLC become an S corporation later?
Yes, many owners start as an LLC and file Form 2553 when profits and cash flow support payroll.
Will I save on taxes immediately?
Savings depend on profit level salary amount and state rules. Run the numbers with a CPA.
Can I still take draws?
In an S corporation owner payments are wages or shareholder distributions. Avoid treating distributions like draws from a sole proprietorship.
