The split that saves you money
As a sole proprietor or single-member LLC, every dollar of net profit is subject to 15.3% self-employment tax. That is 12.4% for Social Security (up to the wage base of $176,100 in 2025) plus 2.9% for Medicare on every dollar with no cap. On $150,000 of profit, the SE tax alone is $21,194.
An S-Corp splits that same $150,000 into two buckets: salary (subject to FICA) and distributions (not subject to FICA). If your reasonable compensation is $75,000, you pay FICA on $75,000 and the other $75,000 comes out as a distribution with zero payroll tax. Your FICA drops from $21,194 to $11,475. That is $9,719 saved in year one, and the savings repeat every year.
Why you cannot pay yourself zero salary
The IRS requires S-Corp owner-employees to pay themselves a reasonable salary for the work they perform before taking distributions. Pay yourself too little and the IRS can reclassify distributions as wages, assess back payroll taxes, and add penalties and interest.
The key word is reasonable. It is not a fixed number or a percentage. It is based on what an unrelated employer would pay someone to do the same work in your industry and geography. That is why documentation matters, and that is what the reasonable compensation memo is for.
The cash-flow trap in year one
New S-Corp owners often underestimate the cash-flow adjustment in year one. You go from paying quarterly estimated taxes on your full profit to running payroll every month (with employer-side FICA due each pay period) plus quarterly estimated taxes on the remaining distribution income.
The total tax bill is lower, but the timing changes. Set up a separate payroll tax holding account from day one and fund it with each pay run. The savings are real, but they show up on your annual return, not in your monthly checking account balance.
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