The S-Corp election is one of the few areas of the tax code where a structural decision can move the needle on a profitable small business by tens of thousands of dollars per year, with no change to operations and no aggressive position. The mechanism is simple: an S-Corporation is a pass-through under IRC §1366, but unlike a sole proprietorship or single-member LLC, distributions to owner-employees are not subject to self-employment tax. Wages paid to those owner-employees are subject to employment taxes (the FICA components, plus federal and state unemployment), but the residual flow-through earnings — the distributions — are not.
That's the trick. And that's why it is policed so carefully.
The reasonable compensation requirement
The IRS has been explicit since the 1959 Revenue Ruling 59-221 (and through subsequent guidance, including Rev. Rul. 74-44 and a long line of cases) that an S-Corp owner-employee performing meaningful services must take reasonable compensation as W-2 wages before any residual is treated as a non-wage distribution. The doctrine has been litigated extensively. The leading cases — Watson v. Commissioner (8th Cir. 2012), Glass Blocks Unlimited v. Commissioner (T.C. Memo 2013-180), and others — uniformly recharacterize purported "distributions" as wages when the underlying compensation was unreasonably low for the services rendered.
The penalty for getting it wrong is significant. The IRS will reclassify part of the distribution as wages, assess employment taxes (employer and employee FICA, plus the Additional Medicare Tax in some cases), add failure-to-deposit and failure-to-file penalties for unfiled employment tax returns, and tack on interest from the original due dates. In the worst cases, the reclassification cascades through prior years, and what looked like a clean tax savings strategy unwinds into a significant assessment.
The good news: reasonable compensation is not a number the IRS imposes. It is a fact-and-circumstance determination the taxpayer makes, and a defensible determination — documented contemporaneously, supported by external benchmarks, and reflective of the actual scope of services — almost always survives examination intact.
The "60/40 myth" and other folk rules
Among small-business owners and a fair number of preparers, you'll hear that "60% W-2 and 40% distribution" is the safe S-Corp split. Or "one-third / two-thirds." Or "match what a non-owner manager would earn."
None of these are rules. There is no statutory or regulatory bright line. The 60/40 figure has no basis in the code, the regulations, or any IRS pronouncement we're aware of. It originated as a heuristic and has been repeated until it acquired the appearance of authority.
The danger of relying on a fixed ratio is that it ignores the actual question: what would a person doing your specific work, in your industry, in your geography, at your scale, be paid in an arms-length employment relationship? For some owner-operators, that number is well above 60% of net business income. For others — particularly highly profitable specialty practices where the business generates outsized returns from capital and goodwill in addition to labor — the defensible reasonable-comp number is much lower as a percentage, even though it's a substantial absolute dollar amount.
The IRS guidance describing factors used in reasonable-comp determinations identifies considerations that have been broadly applied in the case law: training and experience, duties and responsibilities, time and effort devoted to the business, dividend history, payments to non-shareholder employees, timing and manner of paying bonuses to key people, what comparable businesses pay for similar services, compensation agreements, and the use of a formula to determine compensation. None of those factors is a percentage.
What a defensible documentation looks like
The single most useful asset an S-Corp owner can have, if a return is questioned, is a contemporaneous written reasonable-compensation analysis. Not a number scribbled on a napkin. A written document, prepared at or near the time the compensation was set, that:
- Identifies the owner-employee and the services performed.
- Describes the scope and time commitment honestly.
- Cites external benchmarks — the Bureau of Labor Statistics Occupational Employment Statistics, RCReports, salary.com, industry salary surveys, or similar — for comparable roles in comparable markets.
- Adjusts for the relevant factors (geography, scale, scope beyond a typical employee role, owner risk).
- States the resulting reasonable compensation figure and the rationale.
- Is dated and retained with the corporate records.
For closely-held businesses where the owner does many roles, the analysis sometimes splits the work into components — "this owner spends roughly X% on functions equivalent to a CEO at our scale, Y% on functions equivalent to a sales lead, Z% on operations" — and benchmarks each. That granularity isn't required, but it produces a more defensible number when the owner's role isn't a clean fit for any single occupational category.
Beyond reasonable comp: the rest of the S-Corp checklist
Reasonable compensation is the headline issue, but it is not the only one. A complete S-Corp tax practice tracks several other items that get sloppy quickly:
Basis tracking (Form 7203)
Shareholder basis — both stock basis and debt basis — governs whether losses can be deducted, whether distributions are tax-free returns of capital, and what's recognized on a sale or liquidation. Since 2021, Form 7203 has been required when a shareholder claims losses, takes distributions in excess of stock basis, or disposes of stock. Many S-Corp returns historically did not maintain a clean basis schedule, and reconstructing basis years later is painful and expensive. A clean schedule built and maintained from inception is the right answer.
AAA, OAA, and the order of distribution
For an S-Corp with no prior C-Corp earnings and profits, the Accumulated Adjustments Account governs the tax-free portion of distributions. For an S-Corp that was once a C-Corp, the ordering rules (AAA first, then E&P, then OAA, then return of capital, then capital gain) determine whether a distribution is tax-free, dividend-taxable, or recovery of basis. Getting this wrong can convert what an owner thinks is a tax-free distribution into a dividend.
Late S-Corp election (Form 2553 + Rev. Proc. 2013-30)
An S-Corp election is timely if filed by the 15th day of the third month of the tax year for which it's effective. Late elections can usually be perfected via Rev. Proc. 2013-30, which provides simplified late-election relief for entities that meet specified conditions and have a reasonable cause. We've helped clients obtain S-Corp status retroactively to January 1 of the prior year using this procedure, which is significantly cheaper and faster than the formal private-letter-ruling process under §1362(b)(5).
Health insurance and the §162(l) deduction
For more-than-2% S-Corp shareholders, health insurance premiums must be reported as W-2 wages (subject to income tax but not FICA when properly structured) and then deducted by the shareholder as self-employed health insurance under IRC §162(l). Failing to add the premium to W-2 forfeits the deduction. This is one of the most common errors we see on prepared S-Corp returns from generalist preparers.
Accountable plans for owner expense reimbursements
An S-Corp owner who incurs business expenses personally and is reimbursed without a written accountable plan has just received additional taxable wages. A properly structured accountable plan under Treas. Reg. §1.62-2 lets the corporation reimburse business expenses on a tax-free basis — converting what would be after-tax outflows into pre-tax deductions. This single strategy often pays for the entire planning engagement.
When the S-Corp election is wrong
Not every business should be an S-Corp. Several scenarios point the other way:
- Net business income below the threshold where SE tax savings exceed payroll administration costs. Once you factor in payroll processing, separate corporate returns, state filings, and the discipline of running real W-2 payroll, the breakeven is typically somewhere in the $40,000–$60,000 range of net income. Below that, the savings are minimal or negative.
- Real estate held for rental. An S-Corp is a poor wrapper for appreciating real estate — distributing the property triggers gain recognition that wouldn't apply if the property were held in an LLC taxed as a partnership or disregarded entity.
- Foreign owners. S-Corp shareholders must be U.S. citizens or resident aliens (with limited exceptions for certain trusts and estates). A foreign investor disqualifies the S-Corp election.
- Multiple classes of stock. S-Corps can only have one class of stock (though differences in voting rights are allowed). Sophisticated capitalization structures with preferred returns or liquidation preferences require a partnership or C-Corp.
- High-growth businesses planning to raise institutional capital. Most VCs cannot invest in an S-Corp due to ownership limits and pass-through complications. Founders heading toward a priced round usually pre-convert to a Delaware C-Corp.
The honest framing
An S-Corp is not a tax shelter. It is a structural choice that, when matched to the right business and operated with discipline, produces meaningful permanent tax savings that compound over the life of the business. When mismatched or operated sloppily — under-funded reasonable compensation, no basis tracking, ignored health insurance reporting, no accountable plan — it produces an audit posture that, when challenged, can unwind years of apparent savings into a single multi-year assessment.
The S-Corp savings are real, but they belong to the operators who run the structure correctly. They do not belong to the operators who simply made the election and assumed they were saving 60/40.
If you've been operating as an S-Corp for several years without a written reasonable-compensation analysis, without a clean basis schedule, and without an accountable plan, that's not a crisis — but it's worth a one-time audit by someone whose job is to fix exactly these issues. The cost of getting it right is small relative to the cost of having a previously favorable position recharacterized in an exam.