How to Convert an LLC to an S-Corp (And When It Makes Sense)

Deciding to convert an LLC to an S-Corp is one of the most impactful tax moves a small business owner can make. The process is more straightforward than most people expect — your LLC stays intact and only its tax treatment changes — but the timing rules, the paperwork, and the obligations you take on afterward are where owners get tripped up. Here is how the election works for the 2026 tax year, what it actually saves, and when it makes sense to pull the trigger.

Why Business Owners Convert an LLC to an S-Corp

The primary driver is self-employment tax. By default, an LLC’s profit is taxed to its owners as sole proprietorship or partnership income, and essentially the entire net profit is subject to the 15.3% self-employment tax — 12.4% for Social Security plus 2.9% for Medicare, applied to 92.35% of net earnings per IRS Topic 554. For 2026, the 12.4% Social Security portion applies up to the $184,500 wage base set in IRS Publication 15 (2026); the 2.9% Medicare portion continues above that with no cap, and an additional 0.9% Medicare tax applies once earnings exceed $200,000 ($250,000 for joint filers). Half of the self-employment tax is deductible, which softens but doesn’t eliminate the hit.

When you convert an LLC to an S-Corp, only the W-2 salary you pay yourself is subject to Social Security and Medicare payroll taxes. Remaining profit passes through as distributions that are not subject to self-employment tax. That salary/distribution split is the entire engine of S-Corp tax savings.

What the Savings Actually Look Like

Take a business netting $120,000 in 2026. As a default LLC, self-employment tax runs about $16,955 (15.3% of $110,820, which is 92.35% of profit). As an S-Corp paying the owner a $60,000 salary, combined employer and employee payroll tax on that salary is about $9,180 — a payroll-tax difference of roughly $7,800 per year. From that gross figure you subtract the real costs of the structure: payroll processing, a separate business tax return, and federal and state unemployment taxes you didn’t owe before. You should also account for the interaction with the 20% qualified business income deduction, since paying yourself a salary reduces the profit that qualifies. For most businesses at this profit level, the net savings still land in the mid four figures to low five figures annually — real money that compounds year after year — but the exact number depends on the salary you can defensibly set, not on a one-size-fits-all promise.

How the LLC to S-Corp Election Works

The LLC to S-Corp election does not change your underlying legal entity. Your LLC remains an LLC under state law; the only change is how the IRS taxes it. You file Form 2553, Election by a Small Business Corporation, and per the form’s instructions an eligible LLC that timely files Form 2553 is treated as a corporation as of the election’s effective date and does not need to file a separate Form 8832 entity classification election — a common point of confusion.

The deadline matters. For the election to take effect for the current tax year, Form 2553 must be filed no more than 2 months and 15 days after the beginning of that tax year — March 15 for a calendar-year business. You can also file at any time during the preceding tax year for the election to take effect the following year. Miss the window and, by default, your election takes effect the next tax year instead.

Eligibility is the other gate: per the IRS S-Corp requirements, the entity must be domestic with no more than 100 shareholders, one class of stock, and only individuals, certain trusts, or estates as owners — no partnerships, corporations, or nonresident alien shareholders.

Missed March 15? Late Election Relief Under Rev. Proc. 2013-30

If you miss the deadline, the IRS offers late election relief under Rev. Proc. 2013-30. To qualify, the entity must have intended to be an S-Corp and failed only because the election wasn’t timely, have reasonable cause for the failure, have reported income consistently with an S-Corp election for the intended year and every year since, and request relief within 3 years and 75 days of the intended effective date. The request is made by filing Form 2553 with “FILED PURSUANT TO REV. PROC. 2013-30” noted at the top, along with the reasonable-cause statement. Relief is common in practice but not guaranteed — filing on time is always the cleaner path. If you fall outside the revenue procedure, the only remaining route is a private letter ruling.

The Reasonable Salary Requirement

The salary/distribution split is not a dial you can turn to zero. The IRS treats S-Corp officer pay as wages, and its guidance is blunt: courts have upheld employment taxes even where shareholders took distributions instead of wages, and the test is whether payments were truly remuneration for services performed. If you work in the business and take money out, the company must pay you a reasonable salary before distributions. Setting that number well is its own discipline — see our full guide on setting an S-Corp reasonable salary.

What Changes After the Election

Once your LLC to S-Corp election is in effect, you take on a corporate-style compliance routine. Payroll: you must run actual payroll for yourself — withholding, employer payroll tax deposits, quarterly employment tax filings, and a W-2 at year-end — plus federal unemployment tax you likely didn’t owe on yourself before. A separate business return: the S-Corp files Form 1120-S annually and issues you a Schedule K-1 for your share of the profit. Estimated taxes: your personal quarterly payments need recalibrating, since profit now arrives as a mix of W-2 wages and pass-through income — our S-Corp estimated tax planner walks through it. These obligations are manageable with a payroll service and a good accountant, but they are recurring costs that belong in the break-even math.

When to Elect S-Corp Status

Knowing when to elect S-Corp status comes down primarily to income. As a practitioner rule of thumb — not an IRS threshold — the switch starts paying for itself once net business profit consistently clears roughly $40,000–$50,000 per year. Below that, the cost of payroll and a separate return often eats the savings, because a reasonable salary would consume most of the profit anyway. The right time is also when your business is stable enough to support a regular, defensible salary — not mid-way through a year of unpredictable revenue.

Converting is also only one branch of the larger entity decision — if you’re still weighing whether pass-through treatment fits your growth plans at all, start with our comparison of S-Corp vs. LLC vs. C-Corp. If you’re approaching the income threshold, the LLC to S-Corp election deserves a serious conversation with your accountant well before next March 15 — and if you’d like to run your numbers with us, contact us.