The S-Corp 60/40 Rule Is a Myth. Here's What the IRS Actually Looks At.

If you've looked into how to set your S-corp salary, you've probably come across the "60/40 rule." Pay yourself 60% of net profits as salary, take 40% as distributions. It sounds clean. It sounds reasonable. It has no basis in IRS guidance, Tax Court precedent, or any statute.

The 60/40 rule is not a real thing. Using it could actually hurt you in an audit.

Where the 60/40 rule came from

Nobody knows exactly. There's no IRS document, revenue ruling, court opinion, or legislative history that establishes a 60/40 or 50/50 salary-to-distribution ratio as a safe harbor. It appears to have emerged from CPA rules of thumb, payroll company marketing materials, and the natural human desire for a simple answer to a complicated question.

What's remarkable is how widely it's repeated by sources you'd expect to know better. ADP, the largest payroll processor in the country, references percentage-based approaches in its S-corp guidance. Block Advisors mentions the 60/40 guideline while noting it's not IRS guidance. RCReports, the leading reasonable compensation software company, surveyed accountants and found that 33% believe the 50/50 rule is a valid methodology.

One-third of accountants think a formula the IRS has explicitly rejected is a legitimate approach. That's the state of play.

Why the IRS rejects arbitrary formulas

IRS Fact Sheet 2008-25 lists nine factors the IRS uses to evaluate reasonable compensation. Factor number nine is "the use of a formula to determine compensation." And it's a negative factor. The IRS includes it because formula-based approaches are often used to justify artificially low salaries, which is exactly the behavior they're looking for.

Think about why a percentage formula doesn't work:

A management consulting firm earning $500,000 in revenue with one owner-employee who does all the work has a very different salary profile than a retail store earning $500,000 with one owner who manages a team of employees and significant inventory. The consultant's labor is the entire revenue engine. The retailer's labor is one input among many (inventory, real estate, employees). A 60/40 split applied to both businesses produces the same result, but the market value of the owner's labor in each business is completely different.

That's the fundamental problem with any percentage approach. It's based on the business's financials, not on the market value of the owner's services. The IRS's standard is "what would you have to pay someone to do this work," not "what percentage of profits should go to salary."

Tax Court has upheld this reasoning repeatedly. Courts have rejected taxpayer arguments based on percentage splits and ruled in favor of IRS analyses based on comparable market data. The message is consistent: formulas don't work. Data does.

What the IRS actually looks at

Instead of a formula, the IRS evaluates each situation based on the nine factors from Fact Sheet 2008-25. We walk through all nine in detail in The Nine IRS Factors for Reasonable Compensation. The short version:

Your actual duties and how you spend your time. The IRS wants to know what you do, not just that you own the business. If you spend 30% of your time on bookkeeping, 25% on sales, 20% on operations, and 25% on client delivery, each of those tasks has a market value. That's a fundamentally different analysis than applying a percentage to your P&L.

What comparable roles pay in your area. The Bureau of Labor Statistics publishes wage data for 800+ occupations across 400+ metro areas. This is the data source the IRS references in its own analyses. A management consultant in San Francisco has a different market rate than a management consultant in Des Moines. A percentage formula ignores geography entirely.

Your training, experience, and qualifications. A surgeon with 20 years of experience commands different compensation than a recent medical school graduate, even if they own similar practices. Market data accounts for this through percentile distributions. A formula doesn't.

The economic conditions and context of your business. A growing business with increasing revenue might justify a salary increase. A struggling business in a declining industry might justify lower compensation. These are facts-and-circumstances judgments that a formula can't capture.

What to do instead

Drop the percentage. Do the actual analysis.

Match your tasks to market data. Identify the specific tasks you perform in the business and match each one to a BLS occupation code for your metropolitan area. This is what the Cost Approach (the "Many Hats" method) does, and it's one of the IRS-recognized methodologies for determining reasonable compensation. See Cost Approach vs. Market Approach for how both methods work.

Use a recognized data source. BLS wage data is free, public, and verifiable. It's the same data the IRS uses. When your report cites a specific occupation code, geographic area, data year, and percentile, an IRS examiner can verify every number independently. That's the definition of transparent.

Document the methodology. Show how you got from your duties to your salary number. The steps should be clear enough that someone who doesn't know your business can follow the logic and check the math.

Update annually. Even if your duties haven't changed much, market rates shift. BLS publishes updated wage data every year. Your salary analysis should reflect current data for the tax year in question.

Don't forget the board resolution. A one-paragraph resolution in your corporate minutes documenting that the salary was reviewed and approved based on market data analysis. This takes less time than reading this post did.

If you want to see what this looks like in practice, WageProof generates a reasonable compensation report that matches your tasks to BLS data for your metro area. You can also check out the sample report or methodology page to understand exactly how the calculations work.

The 60/40 rule is popular because it's easy. But the IRS doesn't grade on ease. They grade on defensibility. And a formula-based approach is the opposite of defensible.