The S-corp election gets talked about constantly in freelancer and small-business circles, often with more enthusiasm than nuance. It can genuinely save real money — but only past a certain profit level, and only once you account for the costs it adds. Here's how to actually run the numbers.
The core mechanism: splitting profit into salary and distributions
As a sole proprietor, every dollar of net profit is subject to the full 15.3% self-employment tax (Social Security and Medicare combined), on top of ordinary income tax. Electing S-corp tax treatment lets you split your income into two categories: a reasonable salary, paid to yourself as a W-2 employee of your own company and subject to payroll tax, and distributions, which are not subject to self-employment or payroll tax at all. Only the salary portion faces the 15.3% tax; the distribution portion escapes it entirely.
The catch: "reasonable salary"
The IRS requires that the salary you pay yourself be "reasonable" for the work you actually do — generally, comparable to what you'd pay someone else to do your job. Paying yourself an artificially low salary to shelter more income as tax-free distributions is a well-known audit trigger, and the IRS can reclassify distributions as wages, along with penalties, if your salary looks unreasonably low relative to your total profit and your role.
Costs an S-corp election adds
| Added cost | Why it exists |
|---|---|
| Payroll processing | You must run actual payroll for your own salary, including withholding |
| Separate business tax return (Form 1120-S) | Required annually, typically needs a preparer |
| State-level fees or franchise taxes | Vary by state, similar to LLC costs |
| Bookkeeping complexity | Salary, distributions, and business expenses must be tracked separately |
These costs typically run into the low thousands of dollars per year between payroll services and additional tax preparation fees — which is exactly why the election only makes sense once the self-employment tax savings clearly exceed that overhead.
A simplified example
Imagine a freelance consultant nets $100,000 in profit. As a sole proprietor, self-employment tax applies to nearly all of that (with a small reduction from the deductible half of the self-employment tax itself). As an S-corp, if a reasonable salary for that work is $55,000, only that $55,000 faces payroll tax — the remaining $45,000 in distributions does not. The payroll-tax savings on that $45,000 can be substantial, but it needs to be weighed against the payroll and administrative costs above. At lower profit levels, those added costs can eat up most or all of the theoretical savings, which is why this election rarely makes sense for freelancers still in their first year or two of consistent profit.
How the QBI deduction interacts with S-corp status
Reasonable salary paid to yourself does not count as Qualified Business Income for purposes of the 20% QBI deduction, while distributions generally do. This is another variable in the math — the QBI deduction shrinks slightly relative to a comparable sole proprietorship structure, which is worth factoring in alongside the self-employment tax savings. Our QBI deduction guide covers the calculation in more depth.
When to consider it — and when to wait
- Consider it once net profit is consistently well above what a reasonable salary for your work would be, typically deep into five figures of "excess" profit.
- Wait if your income fluctuates significantly year to year — the fixed administrative costs are harder to justify on inconsistent profit.
- Wait if you're not ready to run actual payroll and file a separate business return — the added complexity is real, not just theoretical.
Frequently asked questions
When does the S-corp election need to be made?
Generally, the election needs to be filed relatively early in the tax year you want it to apply to — deadlines are specific and unforgiving, so this is a decision to make with a tax professional well before year-end, not as a last-minute year-end move.
Can I switch back to a sole proprietorship later if it doesn't work out?
Yes, though there are rules and potential waiting periods around revoking an S-corp election, so it's not something to flip back and forth on casually.
Do I need a payroll service, or can I run my own salary manually?
Technically you can run it manually, but the withholding, filing, and deposit deadlines are strict enough that most freelancers who elect S-corp status use an affordable payroll service to avoid costly compliance mistakes.