For freelance developers, creators, and solo hackers, securing revenue is only half the battle. The true drain on your cash flow is the Federal Self-Employment Tax:
This 15.3% tax applies on top of your standard progressive income tax brackets. If net solo business income reaches $100,000, SE tax swallows roughly $14,130.
Under an S-Corp, profits split into W-2 Salary (full FICA) and Shareholder Distributions (exempt from 15.3%). With a reasonable salary of $50,000 out of $120,000:
Model your baseline liability at savvy.metaphysicflow.com.