When an S-Corp Costs More Than It Saves

#The payroll-tax math and why it has a floor

The S-corp tax benefit is real. As a sole proprietor or single-member LLC, every dollar of net profit faces self-employment tax at 15.3% (12.4% Social Security on the first $184,500 for 2026, plus 2.9% Medicare on all net earnings). On $150,000 of net profit, that is roughly $21,000 in SE tax paid before income tax even enters the picture.

An S-corp changes the calculation. You pay yourself a reasonable W-2 salary (say, $80,000 on $150,000 net), run payroll through the corporation, and the remaining $70,000 flows out as a distribution. The $80,000 salary still pays FICA. The $70,000 distribution does not. That saves roughly $10,710 in SE and FICA tax ($70,000 at 15.3%) annually.

#Why the savings require a minimum income floor

Here is the part most articles skip. The savings only materialize when three conditions line up:

• Your net profit is high enough to pay a reasonable salary and still leave a meaningful distribution
• The IRS determines your reasonable salary reflects what the market pays for your role (you cannot take a $1 salary on $150,000 of income)
• Your business generates active income from services you actually perform

If your profit is $45,000 and a defensible salary for your role is $38,000, only $7,000 is left as a distribution. The SE tax savings on $7,000 = $7,000 times 15.3% = $1,071. That is the entire annual benefit. Keep that number in mind for the next section.

#The reasonable-salary requirement is not a suggestion

The IRS attacks S-corp owners who pay themselves token salaries to maximize distributions. Rev. Rul. 74-44 established the precedent: if a shareholder-employee performs services but takes no salary or an unreasonably low salary, the IRS will recharacterize distributions as wages and assess FICA taxes, penalties, and interest.

A defensible reasonable salary reflects what a comparable employee would earn for your role, in your industry, in your location. Skimping on salary to maximize distributions is the number-one S-corp audit trigger.

#What running an S-corp actually costs you

The SE tax savings look great in isolation. Add in the overhead and the picture changes, especially at lower income levels.

#The four cost layers every S-corp owner carries

Layer 1 — Payroll service. You must run payroll every pay period, deposit payroll taxes, and file quarterly Form 941s plus annual W-2s and W-3s. Services like Gusto or ADP run $50 to $150 per month ($600 to $1,800 per year). DIY payroll is possible but error-prone and still requires your time.

Layer 2 — Form 1120-S preparation. Your S-corp files a separate corporate return every year, due March 15. A straightforward 1120-S runs $1,200 to $2,500 with a CPA. Add states with their own S-corp filing requirements and the number climbs.

Layer 3 — Bookkeeping and accounting complexity. Clean, separate books are not optional. Shareholder basis tracking, owner loan documentation, and quarterly payroll reconciliations add time or incremental accounting fees. Budget an extra $500 to $1,500 per year above what you would pay as a sole proprietor.

Layer 4 — State fees and minimum taxes. Several states charge a minimum franchise tax or gross receipts tax on S-corps regardless of profit. California charges $800 per year as a minimum franchise tax. Texas, New York, and New Jersey all add cost layers on top of the federal overhead.

#Where the real break-even lands

Most advisors quote a break-even around $40,000 to $50,000 in net profit. That figure ignores overhead. Once you add payroll service, 1120-S prep, and incremental bookkeeping:

• At $45,000 net profit: S-corp saves $1,071, costs $3,000 or more. Net loss of roughly $1,929 per year.
• At $60,000 net profit: S-corp starts to break even, depending on state and overhead levels.
• At $80,000 net profit: Net annual savings approach $3,000 to $5,000 after overhead.
• At $120,000 net profit: Net annual savings approach $8,000 to $10,000. The math now clearly favors the S-corp.

The real, overhead-adjusted break-even sits around $60,000 to $80,000 in net profit for most owners. If you are below that range, read the full breakdown at LLC vs. S-corp tax math by income level before you file Form 2553.

#Real estate: the passive-income trap inside an S-corp

Look — holding rental property inside an S-corp feels logical. One entity, one return, clean separation from your personal assets. The problem is that S-corps and real estate create two serious tax problems that a plain LLC does not.

#The passive income termination rule under §1375

Under IRC §1375, if an S-corp’s passive income exceeds 25% of its gross receipts for three consecutive years and the corporation has accumulated earnings from prior C-corp years, the S-corp election terminates. Rental income is generally passive income for purposes of this rule. A real estate S-corp can quietly build toward termination without triggering any obvious warning until year three.

Even if termination never triggers, excess passive income is subject to a 35% corporate-level tax under §1375 while the election is intact. That charge wipes out most of the S-corp benefit for a rental portfolio in a hurry.

#The built-in gains tax under §1374

If you transferred appreciated property into an S-corp (say, a rental house worth $400,000 with a $100,000 basis), the built-in gain of $300,000 is locked in. Under IRC §1374, if the S-corp sells the property within five years of the conversion, the built-in gain is taxed at the 21% corporate rate before the remaining proceeds pass through to you. That is an extra tax layer that disappears entirely if you hold the property in a plain LLC.

Compare that treatment to a personal or LLC-held rental, where a sale generates capital gains taxed at your personal rate (0%, 15%, or 20% depending on income) with no corporate layer in between.

For most real estate investors, the right structure is a plain LLC or limited partnership, not an S-corp. We walk through the full analysis in the S-corp rental real estate trap.

#What you give up on death

When an S-corp owner dies, the corporation’s assets do not receive a step-up in basis to fair market value the way personally held or LLC-held assets do under IRC §1014. A beneficiary who inherits S-corp shares gets a stepped-up basis in the shares, not in the underlying real property. Future depreciation and gain calculations are unaffected by the date-of-death value. That is a meaningful estate-planning cost that compounds over a full career of appreciation.

#Raising outside capital and the single-class-of-stock bar

If there is any chance you will raise venture capital, private equity, or angel investment, do not elect S-corp status. The structure is fundamentally incompatible with how outside investors work.

#Why VC and PE require multiple classes of stock

Investors in startups and growth companies almost always take preferred stock with liquidation preferences, anti-dilution rights, and conversion features. Founders hold common stock with different economic rights. Two classes. IRC §1361(b)(1)(D) prohibits exactly that for S-corps.

An S-corp can have only one class of stock. The moment an investor receives preferred shares, or even a convertible note that could convert into a different economic class, the S-corp election is void. The company retroactively becomes a C-corp, which means back taxes on any income that should have been taxed at the corporate rate, plus penalties and interest.

#The 100-shareholder ceiling

S-corps also cannot have more than 100 shareholders under §1361(b)(1)(A). For most service businesses, this is not a practical constraint today. For businesses building toward a broad investor base or an employee equity plan with hundreds of recipients, it becomes binding fast.

#The alternative structures to consider

If you are building a business you plan to sell or capitalize:

• A C-corp gives you full flexibility for preferred shares, convertible instruments, and multiple equity classes.
• A plain LLC taxed as a partnership allows economic flexibility through operating agreement provisions without the S-corp shareholder rules.
• The Qualified Small Business Stock (QSBS) exclusion under IRC §1202 can exclude up to $10 million in gains from federal tax, but only for C-corp stock held for five years. An S-corp election forecloses that benefit permanently.

If you are considering why you formed an LLC in the first place and what the right long-term structure looks like, why form an LLC: sole prop to LLC decision covers the foundational framework before the S-corp question even enters the picture.

#Foreign owners and other §1361 hard disqualifiers

Some situations are not close calls. Under IRC §1361, certain shareholders categorically disqualify an entity from S-corp status from day one.

#Nonresident aliens cannot be S-corp shareholders

This comes up more often than you would expect. A co-founder on an H-1B visa is typically a U.S. resident for tax purposes (substantial presence or lawful permanent resident status) and is eligible. A co-founder living abroad who is neither a U.S. citizen nor a tax resident is not. The line matters.

#Other ineligible shareholders under §1361

Beyond nonresident aliens, the statute also bars:

• Partnerships and LLCs taxed as partnerships (cannot own S-corp shares)
• C-corporations and other corporations (entities cannot be S-corp shareholders)
• Most trusts (only certain grantor trusts, qualified Subchapter S trusts, and electing small business trusts qualify under §1361(c)(2))
• Entities with differential economic rights (convertible debt or options that create a second class of stock)

Just so you know: before you elect S-corp status, verify every current shareholder and every anticipated future shareholder against this list. One disqualified party and you lose the election, potentially retroactively, with no clean way back for five years.

#When an S-corp shrinks your §199A deduction

The QBI deduction under IRC §199A, made permanent by the OBBBA, lets most pass-through business owners deduct 20% of qualified business income. For owners below the income phase-out thresholds ($197,300 single / $394,600 married filing jointly for 2025), the deduction is available in full with no W-2 wage limitation applied.

Here is where the S-corp creates a hidden cost for lower-income owners.

#The salary-versus-QBI tradeoff

As a sole proprietor, your entire net self-employment income (after the SE deduction of roughly 7.65%) qualifies as QBI. On $90,000 of net SE income:

• SE deduction: approximately $6,358
• QBI base: $83,642
• §199A deduction at 20%: $16,728

As an S-corp owner on the same $90,000, you pay yourself $60,000 in salary and take $30,000 as a K-1 distribution:

• QBI = $30,000 (the K-1 pass-through income, not the salary — salary is not QBI)
• §199A deduction at 20%: $6,000

The S-corp just reduced your §199A deduction by $10,728. At a 22% marginal rate, that is $2,360 in additional federal tax compared to the sole proprietor position.

The SE tax savings from the $30,000 distribution: $30,000 times 15.3% = $4,590.

Net tax benefit of S-corp versus sole prop before overhead, at the 22% bracket: $4,590 SE tax saved minus $2,360 lost QBI benefit = $2,230 net before overhead costs.

Subtract $3,000 or more in S-corp overhead and the S-corp costs you money at this income level.

#When the QBI interaction flips in the S-corp’s favor

Above the §199A phase-out threshold, the W-2 wage limitation kicks in. High-income owners cannot claim the full 20% QBI deduction unless the business pays sufficient W-2 wages (at least 50% of total W-2 wages paid, under §199A(b)(2)(B)). In that scenario, the salary your S-corp pays you actually helps your QBI deduction by generating W-2 wages that satisfy the wage test. The interaction flips from costly to favorable.

For the income levels where the S-corp election becomes clearly worth it, see when to elect S-corp: income thresholds explained.

#Common questions

Is the S-corp break-even really $60,000, or can it be lower? It depends on your state and how you manage overhead. In states with no S-corp franchise tax and where you handle payroll yourself, the total overhead can be as low as $1,500 per year, pushing the break-even closer to $45,000. In California, the $800 minimum franchise tax shifts it higher before you count anything else. Run the actual numbers for your state and situation before filing.

Can I elect S-corp status for a rental property LLC? Technically yes, but it is almost always the wrong structure. Rental income is passive, and if it exceeds 25% of gross receipts for three consecutive years, you risk triggering the §1375 entity-level tax and eventual termination of S-corp status. Real estate held in a plain LLC gives you capital gains treatment, potential §1031 exchange eligibility, and a basis step-up on death. None of those advantages are available inside an S-corp.

What happens if a nonresident alien accidentally acquires S-corp shares? The S-corp election terminates on the date the nonresident alien becomes a shareholder. The tax year splits into two short years: the S-corp short year before that date, and the C-corp short year after. Back taxes, penalties, and interest apply to the C-corp period. The IRS has a relief procedure for inadvertent terminations under Rev. Proc. 2013-30, but relief requires prompt action and corrective steps. It is not automatic.

Does the single-class-of-stock rule apply to convertible notes? It can. Under Treas. Reg. §1.1361-1(l)(4)(ii), certain convertible debt instruments are treated as a second class of stock if the conversion or payment terms create economic rights different from common shareholders. A simple convertible note at a market interest rate with a market-rate conversion price is generally safe. Notes with below-market interest, equity kickers, or conversion prices tied to a future valuation event are riskier and can trigger the rule.

If I am below the §199A phase-out threshold, does the S-corp still make sense? Maybe, but the math is tighter than most advisors indicate. At income below the phase-out threshold, electing S-corp reduces your QBI base (salary is not QBI, but net SE income largely is). At the 22% bracket, each $10,000 shifted from sole-prop income to S-corp salary costs you about $440 in lost §199A benefit. You need the SE tax savings to exceed both the lost QBI benefit and the S-corp overhead before the election adds up. For many owners at $60,000 to $90,000 in net profit, it is close to a wash.

Can I revoke an S-corp election if it stops making sense? Yes. Under §1362(d), shareholders owning more than 50% of shares can revoke the election. The revocation is effective on the date specified in the revocation, or the start of the next tax year if no date is given. After revocation, the entity must wait five years before re-electing S-corp status, unless the IRS grants an exception. Think carefully before revoking. The five-year lockout period means you are making a long-horizon decision.

How does the S-corp election interact with the QSBS exclusion? It does not, and that is the problem. IRC §1202 Qualified Small Business Stock, which can exclude up to $10 million (or 10 times basis) of gain from federal tax, applies only to C-corp stock. An S-corp cannot generate QSBS-eligible shares. For founders building a business they plan to sell, the choice between S-corp and C-corp is not just about SE tax savings today. An S-corp election forecloses the QSBS benefit permanently.

What if my business has both active income and some passive rental income? It depends on the proportion. The §1375 passive income test applies when passive income exceeds 25% of gross receipts AND the S-corp has accumulated C-corp earnings and profits. A clean S-corp with no prior C-corp history has lower termination risk. But rental income still complicates shareholder basis tracking and at-risk rules under §1366, and the S-corp wrapper adds no benefit to the rental portion. Many business owners in this situation separate the rental activity into a plain LLC and keep the service business in the S-corp.

#Ready to talk through your S-corp decision?

If you are not sure whether an S-corp makes sense for your situation, that is exactly what a Tax Discovery call is for. We run the actual break-even numbers for your income level, your state, and your business type, and we give you a straight answer, even when the straight answer is “stay an LLC for now.” We work with single-member LLCs at every income stage and with tax planning and advisory clients who want the full picture before making an election decision. Free advice either way.