US 1099 Sole Prop vs. S-Corp Reasonable Salary & QBI Tax Optimizer

1099 vs S-Corp: The $150k Freelancer Tax Decision (QBI & PTET Included)

You are a freelancer netting $150,000 on a 1099. Your CPA mentions "S-corp election" and your eyes glaze over. Here is the actual decision: as a sole proprietor, you pay 15.3% self-employment tax on ~92.35% of net income — roughly $21,000 on $150k — plus income tax. As an S-corp, you pay yourself a "reasonable salary" (say $80,000), pay payroll taxes only on that salary (~$12,000), and the remaining $70,000 flows through free of self-employment tax. Gross savings: ~$9,000/year. Costs: payroll service ($600–$1,200/yr), corporate tax return ($800–$2,000), state fees, and quarterly payroll admin. Net savings at $150k: typically $5,000–$7,000. The breakeven is usually around $60,000–$80,000 net — below that, the admin costs eat the savings.

QBI (Section 199A) complicates the pretty picture. Sole proprietors and S-corp owners both generally get the 20% qualified business income deduction — but S-corp owners compute it on profit AFTER salary, so a higher salary shrinks the QBI deduction. Every extra $10,000 of salary saves ~$1,530 in payroll tax but costs ~$2,000+ in lost QBI deduction (at 20%+ marginal rates) — the optimization is a genuine tradeoff with a sweet spot, not "take the lowest defensible salary." Then PTET (pass-through entity tax): 30+ states now let S-corps (and partnerships) pay state tax at the entity level, converting the capped SALT deduction into a full federal deduction — worth $3,000–$8,000+ annually in high-tax states like California and New York. PTET alone has flipped many "maybe" S-corp decisions to yes since 2021.

Reasonable salary is where the IRS actually bites. There is no formula — the standard is what you would pay an unrelated person to do your job. A software consultant netting $200k paying themselves $30k is audit bait; courts have recharacterized distributions as wages plus penalties. Document your reasoning: salary surveys, job postings for equivalent roles, hours worked. The common safe zone practitioners use is 40–60% of net for service businesses, higher for capital-light consulting. And the S-corp is not forever — if income drops below breakeven or you stop wanting payroll admin, you can revoke, but timing matters for tax years. The optimizer models salary level, QBI impact, PTET benefit, and admin costs together — because optimizing any one in isolation gives the wrong answer.