S-Corp Savings Calculator

The S-corporation election is one of the most over-hyped and most misunderstood tax moves for US business owners. Done at the right income level, it can legitimately save thousands of dollars a year in self-employment tax. Done too early, or with a salary set wrong, it costs more in admin than it saves, and can invite an IRS challenge. The calculator above shows the realistic saving at your numbers. Here is how to read it and decide.

Why an S-corp can lower your taxes

By default, a single-member LLC is a "disregarded entity": all of its profit flows to you and the entire amount is hit with self-employment tax, 15.3% covering Social Security and Medicare, on top of income tax. That self-employment tax is often the single biggest line on a profitable solo business's return.

An S-corp changes the structure. You become an employee of your own company and pay yourself a reasonable salary. Payroll taxes (the same 15.3%, now split as employer and employee) apply only to that salary. The remaining profit comes to you as a distribution, which is not subject to self-employment or payroll tax. That distribution is the source of the saving.

Example: on $120,000 of profit, a default LLC pays self-employment tax on essentially all of it. As an S-corp paying a $60,000 salary, payroll tax applies to the $60,000 and the other $60,000 of distribution escapes it. That gap is where the savings come from, and it grows as profit rises above salary.

The "reasonable salary" rule you can't ignore

The IRS knows exactly why owners elect S-corp status, so it requires that your salary be reasonable for the work you actually do. Pay yourself $10,000 on $200,000 of profit to dodge payroll tax and you're inviting an audit, reclassified wages, back taxes and penalties. A defensible salary reflects what you'd pay someone else to do your job, supported by industry data and your hours. The calculator lets you test different salary levels precisely because this number is the heart of the decision.

The costs an S-corp adds

The tax saving is only half the equation. An S-corp brings real ongoing obligations that a simple LLC doesn't:

• Payroll. You must run formal payroll for your salary, with withholding, filings and (in most cases) a payroll provider.
• A separate tax return. S-corps file Form 1120-S plus issue you a K-1, on top of your personal return. That's more preparation than a Schedule C.
• Tighter bookkeeping. Clean books become non-negotiable to separate salary, distributions and expenses, which is where ongoing bookkeeping earns its keep.
• State fees and rules. Some states tax S-corps or charge extra fees that erode the federal saving.

The estimator subtracts a ballpark for these costs so you see the net benefit, not a headline number that ignores the overhead.

When the S-corp election makes sense

As a rough guide, the election starts to pay off once your net profit is comfortably above a reasonable salary, often around the $80,000–$100,000 profit mark and clearly worthwhile above that. Below that, the added payroll, filing and bookkeeping costs tend to swallow the saving. The exact break-even depends on your reasonable salary, your state, and how much profit sits above that salary.

It's also not just about tax. Some owners elect S-corp status for cleaner separation of salary and profit, simpler retirement-plan contributions, or to build a more formal business. Others stay a simple LLC precisely to avoid the admin. There's no universally right answer, only the right answer for your numbers.

How to make the election correctly

An LLC elects S-corp taxation by filing Form 2553 with the IRS, generally within a set window of the tax year you want it to take effect (late elections are sometimes possible with reasonable cause). You keep your LLC legal structure, you're only changing how it's taxed. Getting the timing, the salary, and the payroll setup right from the start avoids costly cleanup later. Our team handles the election as part of company formation and entity work, then keeps the payroll and 1120-S filing running so the saving is real and defensible.

Before you elect, run the real numbers

Use the calculator to test a few scenarios: your current profit, your expected profit next year, and a couple of reasonable salary levels. If the net saving is solid and your profit is stable or growing, an S-corp is likely worth it. If the numbers are marginal, staying a default LLC and revisiting next year is often smarter. Either way, talk it through with a CPA or Enrolled Agent before filing Form 2553, the reasonable-salary call and multi-state implications are exactly where professional judgment protects you.

S-corp and your retirement and health planning

The self-employment tax saving is the headline, but an S-corp also reshapes other planning. Because you pay yourself a formal salary, retirement-plan contributions and certain benefits key off that wage, which can be an advantage or a constraint depending on how much you want to save. A solo 401(k), for instance, lets you contribute both as employee and employer, and the math runs off your S-corp salary. Set the salary too low purely to dodge payroll tax and you may also cap how much you can shelter for retirement, another reason the "reasonable salary" number deserves real thought rather than a lowball guess.

Health insurance is another wrinkle. Premiums for a more-than-2% S-corp shareholder are handled in a specific way, run through payroll and deducted on your personal return, that differs from a sole proprietor's treatment. None of this is a reason to avoid the election; it's a reason to set it up with someone who knows the mechanics, so the savings aren't quietly eaten by avoidable mistakes.

Don't elect and forget

An S-corp isn't a one-time decision you make and ignore. It requires running payroll on schedule, filing the 1120-S every year, keeping clean books that separate salary from distributions, and revisiting your reasonable salary as the business grows. If the business changes, profit falls, you take on partners, you move states, the election should be reviewed. Some owners even revoke the election when it no longer pays. Treat it as a living part of your tax strategy, reviewed annually alongside your return, and it keeps delivering. Set it and forget it, and small compliance gaps can erode the benefit or invite scrutiny.