Founder Profile
C Corp vs S Corp for a Solo Founder
For a single-owner business with no investors, no equity grants, and no exit plan, the relevant comparison is sole proprietor or single-member LLC vs S corp election. C corp rarely beats either for a solo operator.
Updated May 2026. Educational, not tax advice.
The verdict
Sole prop or SMLLC until ~$80,000 net profit. S corp election above that.
C corp is almost never the right choice for a solo founder. Below ~$80k profit, the S corp savings on self-employment tax do not cover the payroll, 1120-S prep, and state fees. Above that, the savings climb steadily.
The break-even table
Assumes a single-shareholder S corp paying a reasonable salary defensible against IRS audit (typically the median W-2 for the work performed). Self-employment tax saving = 15.3% of distributions up to the 2026 SSA wage base of $176,100, then 2.9% Medicare plus 0.9% additional Medicare above $200,000 individual. Compliance cost is industry-typical payroll service plus 1120-S preparation.
| Net Profit | Reasonable Salary | Distribution | SE-Tax Saving | Annual Compliance | Net | Verdict |
|---|---|---|---|---|---|---|
| $40,000 | $40,000 | $0 | $0 | $1,500 | -$1,500 | Stay sole prop or single-member LLC |
| $60,000 | $45,000 | $15,000 | $2,295 | $1,800 | +$495 | Marginal. Likely not worth it. |
| $90,000 | $55,000 | $35,000 | $5,355 | $2,000 | +$3,355 | S corp starts to pay |
| $150,000 | $80,000 | $70,000 | $10,710 | $2,200 | +$8,510 | S corp clear winner |
| $300,000 | $120,000 | $180,000 | $22,140 | $2,500 | +$19,640 | Strong S corp case |
Source: IRS Publication 15 (2026 FICA rates); SSA OASDI wage base; 26 U.S.C. Section 3121. Compliance costs are industry-typical estimates and vary widely.
Why C corp does not work for solo founders
Double taxation actually bites
Unlike a venture-backed startup that reinvests everything, a solo founder typically pulls cash out. C corp pays 21% federal on profit, then the founder pays up to 23.8% on dividends. Combined federal effective rate may exceed 40% before state tax.
QBI deduction unavailable
The Section 199A QBI deduction (up to 20% of qualified business income) is available to S corp shareholders and pass-throughs. C corp shareholders cannot claim it.
Personal Service Corporation trap
A C corp performing services in fields like health, law, consulting, or accounting may be classified as a Personal Service Corporation under IRC Section 448(d)(2), losing graduated rate brackets and facing a flat 21% on the first dollar. Source: 26 U.S.C. Section 448.
The reasonable salary trap
The S corp savings assume the IRS accepts your salary as reasonable. Setting salary at $20,000 to save self-employment tax on a $200,000 profit is the most common audit trigger for solo S corps. The IRS may reclassify distributions as wages, adding back the 15.3% plus penalties.
The Watson v Commissioner case (8th Cir 2012) reclassified $24,000 in salary up to $91,044 for a CPA with $203,651 in distributions. Use BLS OEWS comparable wage data for your occupation as the defensible anchor. See our reasonable salary deep dive.
Decision checklist
Sources
- 26 U.S.C. Section 3121 (FICA)
- 26 U.S.C. Section 199A (QBI deduction)
- 26 U.S.C. Section 448 (Personal Service Corporation)
- BLS Occupational Employment and Wage Statistics
- SSA OASDI Contribution and Benefit Base
Educational only. The break-even threshold may vary by state, occupation, and personal tax bracket. Consult a CPA for your situation.