S Corp vs LLC at $80,000 Profit: The Exact Break-Even Point

At $80,000 of net profit, staying an LLC costs you $11,303.64 in self-employment tax. Electing S corp status with a $40,000 salary cuts that bill to $6,120.00 in payroll tax — a savings of $4,383.64 a year after $800.00 of admin costs. But the savings are not unconditional: they shrink with every dollar of salary you pay yourself, and at a salary of $68,651.24 they reach exactly zero.

That salary — the break-even point — is the number to know before you file any S corp election, because below it the S corp prints money and above it the S corp loses money. Here is where the number comes from.

What each form actually pays

As an LLC (or sole proprietor), all $80,000 of profit is subject to self-employment tax on 92.35% of its face — a base of $73,880.00:

Effective rate: 14.13% of profit. As an S corporation, only your salary runs through payroll tax — 15.3% flat, with no 92.35% adjustment — and the rest arrives as distributions that payroll tax never touches:

The $4,383.64 is 5.48% of profit — real money, and the reason the S corp election is the most commonly recommended move for profitable single-owner businesses.

The dial: salary decides everything

The savings are a linear function of one variable you control, within limits:

Each $10,000 of salary shifted from distribution to payroll costs $1,530.00 of savings — 15.3% of it. The salary is not free to set, which is the catch: the IRS requires "reasonable compensation" for the work you actually perform, and setting it artificially low is the classic S corp audit trigger.

The exact break-even point

Set savings to zero and solve for salary. S corp payroll tax on the salary must equal the LLC's SE tax minus the admin costs:

$68,651.24 × 15.3% = $11,303.64 − $800.00 = $10,503.64

So at $80,000 of profit with $800.00 of admin costs, the break-even salary is $68,651.24. There is a closed-form version worth internalizing:

Break-even salary = 92.35% × profit − admin ÷ 15.3%

For this scenario: $73,880.00 − $5,228.76 = $68,651.24. At that salary the distribution is down to $11,348.76 and the S corp has bought you nothing — the payroll tax you added on salary exactly cancels the payroll tax the distribution escaped, and you paid $800.00 for the privilege.

Two sensitivities fall out of the same formula. Every $100 of admin cost raises the break-even salary by $653.59, because admin divides by 15.3% on its way into the formula. And every dollar of profit raises it by 92.35 cents, because the LLC's SE tax base scales with profit while the admin haircut does not. At the default $1,500 of admin costs the break-even sits at $64,076.08, which shows how much the payroll service and state filings alone move the target.

Reading the break-even honestly

The break-even salary is a fact; whether it matters is a judgment about your market rate. If a defensible market salary for your role is $40,000, you are $4,383.64 on the right side of the line and the election is nearly free money. If the market rate for your work is $75,000 — above the break-even — the S corp at $80,000 of profit saves you nothing and costs the admin fees, because you cannot justify the salary the strategy requires. The election is a bet that your reasonable salary sits below the break-even, and only you (ideally with an accountant) can price that.

One more input most comparisons skip: deductions reduce the profit both forms are taxed on. The standard self-employed deductions — a home office at $5 per square foot ($750.00 for 150 sq ft), business mileage at 76 cents ($3,800.00 for 5,000 miles), and the business share of phone and internet ($900.00 on a $3,000 bill at 30% use, for a subtotal of $5,450.00) — shrink $80,000 of profit before either form's payroll tax applies. They favor the LLC and S corp equally, but they move the break-even down as profit falls.

Run your own profit through the S Corp vs LLC tax savings calculator with this example pre-filled, check the underlying SE tax mechanics in the self-employment tax calculator, and size the deductions that shrink the base in the self-employed tax deductions calculator. Note the calculator covers federal payroll tax only — income tax on profit is similar in both forms, and state rules vary enough to be their own conversation.

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