IRS Form 1040 Schedule C / Schedule SE (15.3% SECA)
US Sole Proprietorship & Freelancer Tax Guide 2026
Complete tax guide for US sole proprietors and freelancers reporting business income on IRS Schedule C, self-employment tax (15.3% Social Security/Medicare), and quarterly estimated taxes (Form 1040-ES).
Frequently Asked Questions (FAQ)
The IRS Self-Employment Tax (SECA) rate is 15.3%, consisting of 12.4% for Social Security (up to $168,600 wage base) and 2.9% for Medicare.