Calculate self-employment taxes on side income. Includes SE tax, quarterly estimates, and deductions. Based on 2026 IRS guidelines.
Calculate Side Hustle TaxSide hustle income (gig work, freelancing, selling) is subject to self-employment tax of 15.3% for Social Security and Medicare, plus regular income tax. If you earn $400+ from self-employment, you must report it and may need to pay quarterly estimated taxes.