5 Tax Mistakes S-Corp Owners Make Every Year
Your salary-to-distribution ratio might be costing you thousands. Here's what most S-Corp owners get wrong — and how to fix it before your next filing.
If you own an S-Corp, you already know the basic pitch: pay yourself a “reasonable salary,” take the rest as distributions, and save on self-employment tax. Simple in theory. In practice, most S-Corp owners leave thousands on the table — not because they're careless, but because no one showed them what to look for.
1. Setting Your Salary Too High (or Too Low)
The IRS requires “reasonable compensation” — but what's reasonable? Most S-Corp owners either overpay themselves (wasting payroll tax savings) or underpay themselves (triggering IRS scrutiny). The sweet spot depends on your industry, revenue, and role in the business. If you haven't analyzed this in the last 12 months, you're probably on the wrong side.
2. Ignoring Retirement Contributions
S-Corp owners can contribute to a SEP-IRA or Solo 401(k) based on their W-2 salary — and those contributions are tax-deductible to the business. But most owners don't realize how much they can shelter. A Solo 401(k) with employer matching can let you put away over $60,000 per year. If you're only contributing the employee portion, you're leaving serious money on the table.
3. Not Running an Accountable Plan
An accountable plan lets your S-Corp reimburse you for business expenses — home office, vehicle use, phone, internet — tax-free. Without one, those expenses are either non-deductible or mixed into your personal return where they're harder to justify. Setting up an accountable plan is straightforward, but most S-Corp owners have never heard of it.
4. Skipping Quarterly Estimated Payments
S-Corp distributions aren't subject to payroll withholding, which means if your distributions are large relative to your salary, you might owe estimated taxes quarterly. Miss those payments and you face underpayment penalties — even if you pay the full balance at filing. The fix is simple: run a quarterly projection and adjust your payments.
5. Never Reviewing Your Entity Election
The S-Corp election that saved you money three years ago might not be optimal today. If your revenue has changed significantly, if you've added partners, or if the QBI deduction landscape has shifted — it's worth re-evaluating whether S-Corp is still the right structure. Most owners elect once and never revisit.
How Logos Helps
Logos analyzes your S-Corp return and shows exactly how your salary, distributions, and deductions interact. The Enchiridion strategy playbook surfaces specific optimizations — like adjusting your salary-to-distribution ratio, setting up a Solo 401(k), or implementing an accountable plan — with dollar savings estimates and implementation steps.
You don't need to become a tax expert. You just need to see the numbers clearly before your CPA meeting.
Ask Logos about your S-Corp →