If you take one thing from the S corporation half of Corporations Mastering, take this. Reasonable compensation is where the money is, where the exposure is, and where most preparers are guessing. Why the number exists An S corporation shareholder who works in the business is an employee. Wages carry FICA. Distributions do not. So there is a permanent incentive to call everything a distribution and nothing a wage, and the whole body of law here exists to push back on that. The rule is short. A shareholder who performs services must be paid reasonable compensation for those services, and the IRS can recharacterize distributions as wages when he is not. Rev. Rul. 74-44 said it in 1974 and the courts have been saying it ever since. What actually loses cases The cases that go badly for taxpayers are not close calls about whether $60,000 or $80,000 was reasonable. They are cases where the owner paid himself nothing, or something absurd, while pulling six figures out as distributions. - In Spicer Accounting, an accountant worked full time in his own firm, took no salary, and took distributions. The Ninth Circuit had no difficulty calling them wages. - In Joly, same pattern, same result. - In Watson, an accountant in a profitable firm paid himself $24,000 and distributed roughly $200,000. The court accepted the government's expert and moved a large slice into wages. Watson is the useful one, because the taxpayer was not paying zero. He was paying too little, and too little was enough to lose. How to actually set it There is no formula in the code and anyone who gives you a clean percentage is selling something. What defends the number is a documented process. The factors the courts keep using: 1. What the person actually does. Hours, role, whether he is the one generating the revenue. 2. Training, experience and credentials. 3. What the business would pay a stranger to do that job in that market. 4. What comparable businesses pay comparable people. 5. The company's own history and what it can afford. 6. How much of the profit is really from his labor and how much is from capital, employees or systems.