The way you structure your business for tax savings determines how every dollar of profit gets taxed — and the difference between the right and wrong structure can be $20,000 to $60,000 per year. Most business owners pick an entity type once (usually when they first incorporate) and never revisit it. That's a mistake. Your structure should evolve as your revenue, profit margins, and growth plans change.
How Each Structure Gets Taxed
Before comparing, you need to understand the fundamental difference: pass-through taxation vs. corporate taxation. Pass-through entities (sole props, LLCs, S-Corps) send profits to your personal return and tax them at your individual rate. C-Corps pay their own tax at a flat 21% rate, and you get taxed again when money comes out as dividends.
Sole Proprietorship / Single-Member LLC
This is the default. All profit flows to your personal return and you pay income tax plus 15.3% self-employment tax on every dollar up to the Social Security wage base ($176,100 in 2026), then 2.9% Medicare tax above that. Simple to operate, but the SE tax burden becomes painful above $80K–$100K in profit.
S-Corporation
An S-Corp election lets you split profit into two buckets: a reasonable salary (subject to payroll taxes) and distributions (not subject to SE tax). If your business nets $200K and you pay yourself a $90K salary, you save approximately $16,830 in self-employment taxes on the $110K distribution. That's the S-Corp advantage in a nutshell.
The trade-off: you must run payroll, file a separate S-Corp tax return (Form 1120-S), and pay yourself a reasonable salary — the IRS does audit this. S-Corp makes sense when profits consistently exceed $60K–$80K after your salary.
C-Corporation
C-Corps pay a flat 21% federal tax rate regardless of how much they earn. For business owners in the 32%–37% personal bracket, that rate difference is significant — but only if you're retaining earnings in the company. The moment you take money out as dividends, you face double taxation: 21% corporate rate + up to 23.8% on qualified dividends (20% + 3.8% Net Investment Income Tax (NIIT)).
C-Corps make sense in two scenarios: you're reinvesting heavily and want to retain earnings at 21%, or you're pursuing Qualified Small Business Stock (QSBS) treatment under Section 1202, which can exclude up to $10 million in capital gains when you eventually sell.
There's no universally "best" entity type. The optimal structure depends on your profit level, how much cash you need to pull out, your growth trajectory, and your exit timeline.
Tax Comparison by Revenue Level
| Net Profit | Sole Prop / LLC | S-Corp | C-Corp (retained) |
|---|---|---|---|
| $75,000 | ~$25,500 total tax | ~$22,800 | $15,750 (but trapped) |
| $150,000 | ~$49,200 | ~$40,100 | $31,500 (but trapped) |
| $300,000 | ~$103,500 | ~$84,200 | $63,000 (but trapped) |
| $500,000 | ~$180,600 | ~$152,400 | $105,000 (but trapped) |
Estimates assume single filer, standard deduction, 2026 rates. C-Corp figures show corporate tax only — distributions would trigger additional personal tax. Actual results vary by state and deductions.
When a C-Corp Actually Makes Sense
Most small business owners don't need a C-Corp. But two strategies make it worthwhile:
Retained earnings strategy: If your business is growing and you're reinvesting most profits (not pulling them out for personal use), the 21% corporate rate beats the 32%–37% personal rate. Tech companies, SaaS businesses, and capital-intensive operations often benefit.
QSBS (Section 1202): If you plan to sell your business in 5+ years, a C-Corp may qualify for the Qualified Small Business Stock exclusion — up to $10 million in capital gains completely tax-free. This is one of the most valuable provisions in the tax code for founders building toward an exit.
Multi-Entity Structures
As businesses grow, a single entity often isn't enough. Common multi-entity setups include:
- Operating company + real estate LLC: The operating business leases the building from a separate LLC you own, creating a deductible rent payment that moves income to a lower-taxed entity
- S-Corp + C-Corp: Use an S-Corp for active income (avoiding SE tax on distributions) and a C-Corp for retained earnings or R&D-heavy operations that benefit from the R&D tax credit
- Holding company + operating entities: A parent company owns multiple businesses, enabling management fee deductions, consolidated asset protection, and centralized ownership
Decision Matrix: Which Structure Fits You?
| Your Situation | Recommended Structure | Why |
|---|---|---|
| Under $60K profit, solo | Single-member LLC | S-Corp payroll costs exceed SE tax savings |
| $60K–$250K profit, stable | LLC taxed as S-Corp | Maximize SE tax savings with salary/distribution split |
| $250K+ profit, pulling cash out | S-Corp + retirement plan | S-Corp distributions + defined benefit plan for tax-deferred savings |
| $250K+ profit, reinvesting | C-Corp | 21% rate on retained earnings, potential QSBS |
| Multiple businesses | Holding company + subs | Asset protection, management fees, consolidated planning |
| Real estate + operating business | Separate LLCs | Liability isolation, deductible rent payments |
When to Restructure
You should revisit your entity structure whenever your profit crosses a threshold ($60K, $150K, $300K), you add a new business line, you acquire real estate, or your exit timeline becomes clear. Most business owners wait too long — restructuring mid-year is possible but messier than planning it at year-end.
The S-Corp election deadline is March 15 for the current tax year (or within 75 days of forming a new entity). Miss it, and you wait until next year — which could cost you a full year of SE tax savings.
We build custom entity structure recommendations based on your actual numbers — not generic rules of thumb. Get a clear picture of what your current structure is costing you.
Get an Entity Structure Review →The Bottom Line
Your business structure is a tax lever — and it should be pulled deliberately. A sole prop at $200K in profit is overpaying by at least $15,000 per year compared to an S-Corp. A growing company retaining $300K in earnings is overpaying in a pass-through compared to a C-Corp. Run the numbers, model the scenarios, and work with someone who treats entity structuring as a strategy — not just a checkbox on your formation documents.