Should You Elect S-Corp Status? Running the Numbers

If you have heard that electing S-corp status will save you thousands in taxes every year, you have heard half the story. The other half is that the election comes with real compliance costs, IRS scrutiny over your salary, and interactions with your mortgage eligibility and your Section 199A deduction that can work against you.

Educational Disclaimer: This article is for informational purposes only and does not constitute tax advice. Tax rules, rates, and thresholds change annually. Confirm all figures and deadlines with a qualified CPA or at IRS.gov before making any election decision.

The Short Answer: It Depends on Your Net Profit

An S-corp election is not automatically beneficial. The self-employment tax savings only exceed the added compliance costs at a specific break-even profit threshold, and that threshold is higher than most business owners expect. Before you file Form 2553, the key question is whether the net profit on your P&L is large enough and stable enough to justify the ongoing administrative burden.

This article builds directly on the concepts in our earlier piece on owner draws and salary. If you already understand why distributions from a sole proprietorship or single-member LLC are subject to self-employment tax in full, you are ready to evaluate whether shifting some of that income into S-corp distributions changes the math in your favor. The answer is: sometimes yes, sometimes no, and the honest calculation requires looking at all the variables at once.

How the S-Corp Tax Savings Actually Work

The core mechanism is straightforward. When you understand how an S-corp is structured, the key distinction is that an S-corp owner who performs services for the business must pay themselves a reasonable W-2 salary. That salary is subject to payroll taxes, including both the employee and employer share of Social Security and Medicare taxes. Distributions above the salary, however, are not subject to those payroll taxes.

For a sole proprietor or single-member LLC owner, all net profit flows through to Schedule SE, and the full self-employment tax applies to the entire amount up to the Social Security wage base. Above the wage base, only the Medicare portion applies. An S-corp owner in the same income range pays payroll taxes only on the W-2 salary, not on distributions. The difference between the two tax burdens is the potential savings.

The word "potential" matters here. The savings are real, but they do not exist in isolation. Every dollar you save on self-employment tax has a corresponding compliance cost on the other side of the ledger. Whether the net result is positive depends on the numbers specific to your business, not on a general rule of thumb.

The Real Break-Even: What It Costs to Run an S-Corp

Before you can evaluate the S-corp election honestly, you need to know what you are buying. Running an S-corp adds a layer of compliance that a sole proprietorship or single-member LLC does not require, and those costs are not trivial.

Here is a realistic accounting of the annual compliance categories:

These figures are illustrative ranges, not guarantees, and your actual costs will depend on your state, your payroll provider, and your CPA. But they give you a framework: if your payroll tax savings do not exceed roughly $2,000 to $5,000, the election may cost you more than it saves.

State treatment is particularly important. California imposes an S-corp franchise tax on net income with a minimum annual fee; confirm the current rate and minimum with a California CPA or the California Franchise Tax Board, as these figures are subject to change. For a small business with modest profit, that fee alone can eliminate a significant portion of the federal benefit. Michigan does not impose a comparable S-corp franchise tax, which is one reason the math tends to work more favorably for Ann Arbor area owners than for similarly situated owners in high-franchise-tax states.

One cost that surprises many new S-corp owners: the shift from quarterly estimated tax payments to a formal payroll deposit schedule. The timing and mechanics are different, and errors carry penalties.

The commonly cited break-even range is $40,000 to $80,000 in net profit above a reasonable salary. Below that range, compliance costs typically exceed savings. Above it, the math usually favors the election, though state fees and the QBI interaction (discussed below) can shift that conclusion.

Ready to run your own break-even numbers? Our advisory team at Marlowe & Voss works through this calculation with Ann Arbor area business owners every year. Schedule a consultation before making any election decision.

A Worked Example: Sole Proprietor vs. S-Corp

Abstract concepts are easier to evaluate with real numbers on the table. Consider a hypothetical Ann Arbor consultant, Priya, who projects 20,000 in net profit for the year.

As a sole proprietor or single-member LLC: Priya's full 20,000 in net profit is subject to self-employment tax on both the Social Security and Medicare components, up to the applicable wage base, then Medicare only above it. Self-employment tax is a substantial line item at this income level; calculate the current-year figure using the rates and wage base published at IRS.gov, as these change annually. For context, the combined rate on earnings up to the Social Security wage base is meaningful enough that it commonly represents the largest single tax line for self-employed owners at this profit level.

As an S-corp owner with a $65,000 reasonable salary: Priya pays herself a $65,000 W-2 salary. Payroll taxes apply to that $65,000 at the current combined employer and employee rates, which you can confirm at IRS.gov. The remaining $55,000 is taken as an S-corp distribution, with no payroll tax applied. Because payroll taxes apply only to the salary rather than the full 20,000, the gross payroll tax burden is meaningfully lower than in the sole proprietor scenario.

Now subtract compliance costs: Form 1120-S preparation: ,200. Payroll processing service: $900. Total compliance: $2,100.

After subtracting compliance costs from the estimated payroll tax reduction, the net benefit in a scenario like Priya's is typically positive, assuming her reasonable salary is well-supported and her state does not impose significant S-corp fees. The exact dollar outcome depends on current-year rates; use this framework with your actual figures and your CPA, not as a planning document on its own.

If Priya's net profit were $60,000 and her reasonable salary were $55,000, the distribution subject to payroll tax savings would be only $5,000, producing a gross tax reduction far smaller than the $2,000 to $5,000 in compliance costs. The election would cost her money.

Reasonable Compensation: The Risk Most Owners Underestimate

If you have read our earlier article on how owner draws and salary are taxed differently, you already know that the tax advantage of an S-corp rests entirely on the split between salary and distributions. The lower the salary, the greater the share of income that avoids payroll taxes. This creates an obvious temptation to set salary as low as possible.

The IRS knows this, and it enforces the reasonable compensation standard actively.

Reasonable compensation is the salary the IRS expects an S-corp owner to pay themselves for the services they actually perform for the business. It is not a number you choose freely. The benchmark is what a similarly qualified employee would be paid to perform the same work in the open market. The IRS uses Bureau of Labor Statistics Occupational Employment and Wage Statistics data to establish that benchmark by occupation and geography.

The Watson case makes the enforcement risk concrete. In David E. Watson, P.C. v. United States, 668 F.3d 1008 (8th Cir. 2012), a CPA paid himself a $24,000 annual salary while taking $203,000 in S-corp distributions. The IRS successfully recharacterized nearly all of those distributions as wages. The result was over $48,000 in additional taxes, penalties, and interest. The Eighth Circuit upheld that outcome.

For mortgage and lending professionals, the risk is heightened. When an owner's revenue is directly tied to their personal production, as it is for a loan originator, the IRS has a straightforward argument that the distributions represent compensation for services rather than passive return on investment. BLS wage data for similar roles provides a ready-made floor that the IRS can cite.

Setting salary too low is not a gray area. It is a documented enforcement target with a court record behind it.

The Mortgage Trap: When Tax Savings Hurt Your Loan Eligibility

Here is a conflict that professional tax minimization strategy can create: the same low W-2 salary that reduces your payroll tax burden also reduces your documented qualifying income when you apply for a mortgage.

Mortgage underwriters for self-employed borrowers typically use two years of tax returns to calculate qualifying income. For an S-corp owner, the relevant figure is the W-2 salary plus any documented distributions, subject to the underwriter's specific guidelines. A lower W-2 salary shrinks that calculation, which can reduce the loan amount you qualify for or require a larger down payment.

For lending professionals who are also prospective borrowers, this creates a direct conflict. A loan originator who elects S-corp status and structures a conservative salary to minimize payroll taxes may find, two years later, that their own qualifying income on paper does not support the home purchase they planned.

If you expect to buy a home or refinance within the next two years, the salary decision is not purely a tax question. It is also a lending eligibility question. Model both outcomes before you commit to a salary level.

The QBI Wrinkle: How Your Salary Affects Your 199A Deduction

Section 199A of the Internal Revenue Code allows eligible pass-through business owners to deduct up to 20% of their qualified business income. This deduction interacts directly with S-corp salary decisions in a way that most owners do not anticipate until they see it on a tax return.

Here is the interaction: qualified business income is calculated after subtracting the W-2 salary paid to the owner. A higher salary reduces QBI, which reduces the potential 199A deduction. A lower salary increases QBI but increases payroll taxes. The two variables move in opposite directions, so optimizing for one without modeling the other can produce a worse combined result.

There is no universal formula for the optimal salary in this context. The right number depends on your total income, whether you are subject to the Section 199A income-based phase-out rules, and whether your business qualifies as a specified service trade or business. This is precisely the kind of multi-variable calculation that belongs in a year-end tax planning conversation with your CPA, not in a spreadsheet you build from a blog post.

When the S-Corp Election Is the Wrong Move

Not every business benefits from an S-corp election. Knowing the situations where the election works against you is as important as understanding when it helps.

• Net profit below the break-even threshold. Compliance costs exceed savings when profit is too low. New businesses with volatile revenue in their first one or two years are particularly exposed to this risk. The election can always be made later when the numbers justify it.

• High-franchise-tax states. Owners in states that impose significant S-corp fees or franchise taxes may find that state costs eliminate the federal benefit. Confirm your state's current treatment before filing; do not assume the federal savings translate dollar for dollar.

• Planning to sell the business. S-corp status can complicate asset sale treatment depending on deal structure. If a sale is on the near-term horizon, discuss the implications with your CPA before electing or before structuring a purchase price.

• Planning to buy a home or refinance soon. Owners who set a low salary for tax purposes may find the decision costs them more in loan eligibility than it saved in payroll tax. Model the mortgage impact before committing to a salary level.

• Brand-new businesses with unpredictable revenue. Compliance obligations are fixed costs. An S-corp structure that makes sense at 50,000 in profit can be a net negative at $60,000. Wait until revenue is stable enough to model reliably.

For owners whose financial picture is complex or changing rapidly, ongoing strategic tax guidance is often more valuable than any single structural decision.

Filing Form 2553: Deadlines and What to Do If You Missed One

If you have worked through the numbers and the S-corp election makes sense for your situation, the mechanics begin with Form 2553. The general rule, per IRS Form 2553 instructions, is that the form must be filed no later than two months and 15 days after the beginning of the tax year for which the election is to take effect. For a calendar-year business, that window closes in mid-March for a current-year election. The form can also be filed at any time during the preceding tax year.

If you missed the deadline, late election relief exists. IRS Revenue Procedure 2013-30 provides a mechanism for qualifying businesses to make a late S-corp election under certain conditions, but eligibility is not guaranteed and the process has specific requirements.

Deadlines and procedures are subject to change. Do not rely on this article for your filing date. Confirm the current deadline directly with your CPA or at IRS.gov before taking any action.

Ready to Run Your Numbers?

The S-corp election is one of those decisions that looks straightforward until you model all the variables together. Compliance costs, reasonable salary requirements, state treatment, mortgage impact, and the QBI interaction all belong in the same analysis, and the right answer varies significantly from one business to the next.

If you are an Ann Arbor area business owner considering an S-corp election, or if you already elected and want to confirm your salary structure is defensible, the advisory team at Marlowe & Voss CPAs can work through the break-even calculation with your actual numbers. Schedule an advisory consultation and bring your most recent P&L. The conversation is more productive with real figures on the table.