Business Tax
The LLC-to-S-corp conversion is one of the most frequently recommended tax moves for self-employed business owners — and one of the most frequently misapplied. The savings are real, but they only materialize once your net profit crosses a certain threshold, and they come with administrative costs that erode the benefit at lower income levels.
This article explains how S-corp taxation works, where the savings actually come from, how to run the break-even math for your situation, and what the conversion process looks like in practice.
An S-corporation is a pass-through entity for income tax purposes — profits flow to shareholders and are taxed on their individual returns, not at the corporate level. That part is similar to an LLC taxed as a sole proprietorship or partnership.
The difference is in how the IRS treats self-employment income. As an LLC owner taking all business profit as owner draws, you pay self-employment tax (15.3% up to the Social Security wage base, then 2.9% on income above that) on every dollar of net profit. That tax covers both the employee and employer portions of Social Security and Medicare.
With an S-corp, you split your income into two buckets:
The savings come from the distribution portion. If the business earns $150,000 in net profit and you pay yourself a $75,000 salary, the other $75,000 is distributed without the 15.3% SE tax hit. On $75,000, that is roughly $11,475 in tax savings — minus the cost of running the S-corp structure.
The S-corp strategy works because distributions are not wages. You are not avoiding income tax — you are avoiding self-employment and payroll taxes on the portion of profit that flows out as a distribution rather than a salary. The IRS knows this strategy exists and accepts it, provided your salary is "reasonable compensation."
The IRS requires S-corp owner-employees to pay themselves a reasonable salary for the services they provide to the business before taking distributions. "Reasonable" means what you would pay a comparable employee in the open market to do the same work.
The IRS actively scrutinizes S-corps that pay very low or zero salaries to owner-operators who are clearly working in the business. Paying yourself $20,000 a year while taking $200,000 in distributions is the kind of structure that triggers audits and back-tax assessments. Reasonable compensation should be defensible — documented by reference to market salary data for your role and industry.
Running an S-corp costs money that a single-member LLC does not. Those costs include:
When you add those costs together, a realistic annual overhead for maintaining an S-corp structure is $2,000–$4,000 per year in most states. In high-franchise-tax states, it runs higher.
The savings from the S-corp election are roughly 15.3% of the distribution amount (the profit above your salary). So the break-even point is:
Distribution = Administrative Cost / 15.3%
At $3,000 in annual S-corp overhead, you need roughly $19,600 in distributions above your salary to break even. In practice, this means your total net profit needs to be high enough that you can pay a reasonable salary and still have meaningful distributions left over.
The general heuristic used by most tax practitioners: the S-corp election typically makes sense when net profit consistently exceeds $40,000–$50,000 per year. Below that level, the administrative overhead tends to consume most or all of the tax savings.
Run the actual numbers with your CPA before making the election. The break-even point varies by your salary level, your state's tax rules, and your actual administrative costs. The $40–50K heuristic is a starting point for the conversation, not the answer.
There are two ways to achieve S-corp taxation:
Most small business owners choose Option 1 — retaining the LLC legal structure while electing S-corp tax treatment. This avoids the complexity of converting the entity type and preserves the LLC's operating flexibility and governance simplicity.
The S-corp election is made by filing IRS Form 2553 (Election by a Small Business Corporation). For a new business, the election must be filed within 75 days of incorporation or the start of the tax year in which you want the election to take effect. For an existing entity, it must be filed by March 15 of the tax year in which you want the election to apply (for calendar-year taxpayers).
If you miss the deadline, the IRS has a relief procedure for late elections under Revenue Procedure 2013-30, which allows retroactive elections in many cases. Your CPA can file the late election with a reasonable cause statement.
To qualify for S-corp status, the entity must meet specific requirements:
Once you make the S-corp election, you must run payroll for yourself. This means setting up a payroll system, withholding federal and state income taxes plus FICA taxes on each paycheck, filing quarterly payroll tax returns (Form 941), and filing annual payroll filings (W-2 for yourself, Form 940 for federal unemployment). You cannot simply take money out of the business account as you could with an LLC and call it a draw.
The S-corp also files its own federal income tax return — Form 1120-S — by March 15 of the following year. This is in addition to your personal return and typically requires a CPA familiar with pass-through entity taxation.
For business owners who are not already running payroll and working with a CPA on their entity taxes, this is a meaningful increase in administrative overhead. For those already doing so, the incremental burden is lower.
Most states recognize the federal S-corp election, but not all treat it identically. California charges S-corps a 1.5% franchise tax on net income (minimum $800) in addition to personal income tax on the pass-through. New York City does not recognize S-corp status and taxes S-corps as regular corporations for city tax purposes. Illinois imposes a personal property replacement tax on S-corp income.
Some states have their own S-corp election forms separate from the federal Form 2553. Your CPA or tax attorney should confirm your state's specific rules before you make the election.
In California especially, the 1.5% franchise tax significantly reduces the net benefit of the S-corp election. Factor it into your break-even calculation — it changes the math materially compared to a state with no entity-level tax on pass-throughs.
Beyond the income threshold question, the S-corp election is less appropriate in these situations:
Practical legal and business guidance for owners who are building without a general counsel on retainer.
Join the SeriesThis article is for general informational purposes only and does not constitute tax or legal advice. Tax laws, state rules, and individual circumstances vary. Consult a licensed CPA or tax attorney before making any S-corp election or changing your business entity's tax treatment.