
Small Business Taxes 2026: A Complete Obligations Guide for New Business Owners
A 2026 walkthrough of every small business tax obligation—federal income, self-employment, payroll, sales, and excise—with the full filing calendar, quarterly estimated tax safe harbors, OBBBA-era changes (permanent QBI, $1.21M Section 179, restored 100% bonus depreciation), and the recordkeeping habits that prevent penalties.










