If you earn self-employment income, freelance income, or side income without enough tax withholding, quarterly estimated taxes may apply sooner than you think. This quick guide explains who usually needs to pay, how self-employment tax fits in, and the key due dates to know.

A lot is changing for 2026. This article gives a practical look at several new federal tax law provisions so individuals and business owners can better understand what may affect deductions, credits, reporting, retirement planning, and year-ahead tax decisions.