The Full Comparison Framework
A fair comparison must include: (1) Total compensation cost to employer (W-2 salary + employer payroll taxes + benefits). (2) Total tax cost to self-employed worker (SE tax + income tax − all deductions). (3) Retirement savings capacity (W-2 employer match vs. Solo 401k employer contribution capacity). (4) Healthcare cost (employer-sponsored vs. self-employed deductibility). (5) Income potential difference (premium for freelance skills vs. market salary).
Complete W-2 vs. self-employment tax comparison at $100,000 equivalent income
| Factor | W-2 ($100K + benefits) | Self-Employed ($100K net, optimized) |
|---|---|---|
| Total employer cost | ~$120,000 (salary + benefits) | N/A (you bear all costs) |
| SE tax / employee FICA | $7,650 visible | $14,130 visible (employer half too) |
| Business deductions | None | $15,000–$30,000 typical |
| Retirement sheltering | $23,500 (401k employee) | $42,000–$70,000 (Solo 401k) |
| Health insurance deductibility | Pre-tax via employer | 100% deductible on personal return |
| QBI deduction | Not available | 20% of qualified business income |
| Net tax (fully optimized) | ~$17,500 | ~$10,000–$14,000 (with Solo 401k) |
When Self-Employment Wins Taxwise
Self-employment wins on taxes when: (1) You can generate $15,000+ in legitimate business deductions. (2) You maximize Solo 401k contributions consistently. (3) Your income exceeds $80,000+ where the QBI deduction provides significant benefit. (4) You implement S-corp at $120,000+ sustained income. (5) You earn a premium income above equivalent W-2 rates that more than compensates for additional tax burden.
When Self-Employment Loses Taxwise
Self-employment loses on taxes when: (1) You have few legitimate business deductions. (2) You underpay quarterly taxes and pay penalties. (3) You don’t maximize retirement accounts. (4) You provide services as a W-2 employee could provide at the same rate (no income premium). (5) Your employer would otherwise provide a pension, significant 401k match, or other benefits that outweigh SE advantages.
See Your True Self-Employment Tax Picture
Calculate your after-deduction, after-retirement-contribution net tax to see if self-employment is competitive with equivalent employment from a tax perspective.