One of the most common questions we hear from new and growing business owners is whether they should be taxed as a sole proprietor (or single-member LLC) or elect S-corporation status. It's framed as a simple either/or choice, but the real answer depends on your numbers, your industry, and how much administrative complexity you're willing to take on. Here's what actually changes.
The self-employment tax difference
As a sole proprietor or single-member LLC, all of your business profit is subject to self-employment tax — currently a combined 15.3% for Social Security and Medicare, on top of ordinary income tax. As an S-corp, you only pay payroll tax on the reasonable salary you pay yourself; remaining profit distributed to you as an owner isn't subject to that same self-employment tax. For profitable businesses, this is usually where the appeal of S-corp status comes from — the potential savings can be substantial once profit climbs high enough.
What it costs you in return
Electing S-corp status isn't free, and the trade-offs are real:
- Payroll requirements. You'll need to run actual payroll for yourself, including payroll tax filings and withholding, which usually means either payroll software or a payroll service.
- The "reasonable salary" rule. The IRS requires S-corp owners to pay themselves a reasonable salary for the work they do before taking additional profit as a distribution. Pay yourself too little relative to industry norms, and it's a common audit trigger.
- An additional tax return. S-corps typically file a separate business return (Form 1120-S), which usually means additional preparation cost and complexity compared to a simple Schedule C.
For a business with modest profit, the extra administrative cost and complexity can outweigh the tax savings — sometimes significantly.
There's no universal answer
The math depends heavily on your profit level, what a "reasonable salary" looks like in your industry, and how much complexity you're willing to manage. A business earning $40,000 in profit and one earning $150,000 in profit often land on different answers to this same question, even in the same industry.
This is especially relevant for the real estate and construction businesses we work with, where profit can swing significantly from year to year based on which projects closed when — a structure that made sense two years ago may no longer be the best fit today.
Make the decision deliberately
This is a decision worth making with real numbers in front of you rather than by default, and one worth revisiting periodically as your business grows rather than deciding once and forgetting about it. It's a natural extension of ongoing tax planning — the kind of question that gets easier to answer when someone is already tracking your numbers throughout the year, not just at filing time.