Every spring after tax season, the same pattern repeats in entrepreneur circles. A founder who cleared $90,000 to $250,000 in profit hears about the S-corp election and runs the math. The savings on self-employment tax look enormous, sometimes $8,000 to $15,000 a year. The election form is short. The bookkeeper says it is fine. The founder files Form 2553 and moves on. Then the IRS issues a notice three years later questioning the salary line, and the entire structure collapses.
The S-corp election lets an LLC be taxed under Subchapter S of the tax code. The owner becomes an employee of the company and takes a W-2 salary. The remaining profit is distributed to the owner as a shareholder distribution and is not subject to self-employment tax. Self-employment tax is 15.3% on the first $176,100 of earnings in 2026 and 2.9% above that. For a business with $200,000 in profit, the gap between paying SE tax on all of it versus only on a salary portion is real money.
The trap is the requirement that the salary be reasonable. The IRS does not publish a formula. It evaluates reasonableness based on what someone in your role, in your industry, in your geography, with your experience, would earn at a comparable job. There are tax court cases going back to the 1980s that turn on this question. The most cited case is David E. Watson PC v. United States, where an accountant was paying himself a $24,000 salary and taking $175,000 in distributions. The court ruled the salary was unreasonable and recharacterized $67,000 of the distributions as wages. He owed back payroll taxes plus penalties.
The patterns the IRS targets have become more specific over the past decade. A founder taking a salary under $40,000 in a service business that generates $200,000 in profit is the most common audit profile. A founder taking zero salary at all and only distributions is essentially asking for the letter. A founder whose distribution to salary ratio is greater than four to one in a personal services business gets flagged by the algorithms more often than not. The newer wrinkle is that the IRS in 2024 began running pattern matching on industry codes, so a marketing consultant paying themselves $35,000 while peers earn $95,000 stands out automatically.
The defensible approach uses three data sources together. The first is salary survey data from BLS occupational employment statistics, broken down by metro area and percentile. A videography business in Nashville should look at media production salaries in the Nashville-Davidson-Murfreesboro-Franklin MSA at the 50th and 75th percentiles. The second is RC Reports or similar reasonable compensation tools, which most CPAs now subscribe to, that pull industry data and produce a written report you can hand the auditor. The third is a written job description for yourself that maps your actual hours and duties to the comparable role.
The number that comes out of that exercise is rarely the lowest possible figure. For a solo founder doing $200,000 in profit in a personal services business, a defensible salary often lands between $80,000 and $120,000 depending on the metro and the industry. The remaining $80,000 to $120,000 of profit can flow as distributions and avoids self-employment tax. The annual savings is real but smaller than the back-of-envelope calculation that ignored the salary requirement.
The election deadline matters. Form 2553 must be filed within two months and fifteen days of the start of the tax year you want the election to take effect. For a calendar year filer who wanted S-corp treatment for 2026, the deadline was March 15. The IRS does grant late election relief under Revenue Procedure 2013-30 if you can show reasonable cause and you have been operating consistent with S-corp treatment, including running payroll. Founders who missed the deadline and never ran payroll have no path to retroactive relief.
The other compliance pieces are the ones that catch first-time S-corp owners. You need to run actual payroll through a service like Gusto or ADP, withholding federal income tax, FICA, and any state income tax. You need to file Form 941 quarterly. You need to issue yourself a W-2 in January. You need to file a separate 1120-S corporate return by March 15 each year. The annual cost of the additional compliance runs $1,500 to $3,000 between payroll service fees and the additional tax preparation work.