Self-Employment Tax Worksheet

Description

The Self-Employment Tax Worksheet is an essential calculation tool for freelancers, independent contractors, sole proprietors, and other self-employed individuals who need to compute their self-employment (SE) tax liability and understand their total Social Security and Medicare tax obligations. Unlike W-2 employees whose employers withhold and match Social Security and Medicare taxes, self-employed individuals are responsible for both the employee and employer portions — a combined rate of 15.3% (12.4% for Social Security and 2.9% for Medicare) on net self-employment earnings. This worksheet mirrors the calculations on IRS Schedule SE (Form 1040) and walks you through each step of the computation, from determining your net earnings from self-employment through calculating the deductible half of SE tax that reduces your adjusted gross income. The worksheet also addresses the Additional Medicare Tax of 0.9% that applies to self-employment income exceeding $200,000 for single filers ($250,000 for married filing jointly), the Social Security wage base limit above which the 12.4% Social Security portion no longer applies, and the interaction between SE tax and other employment income when you also hold a W-2 job. A particularly valuable feature is the quarterly estimated tax payment calculator, which helps you determine how much to send to the IRS each quarter to avoid underpayment penalties. The worksheet factors in both your estimated income tax and SE tax liability, accounts for safe harbor rules (paying either 100% of last year's tax or 90% of the current year's tax), and generates payment vouchers with the correct amounts and due dates for each quarter. For self-employed individuals with both domestic and foreign self-employment income, the worksheet includes sections for calculating SE tax on foreign earnings and applying applicable Totalization Agreement exemptions for those working in treaty partner countries.

Steps

Applicable Forms

Target Audience

Freelancers, independent contractors, sole proprietors, and gig economy workers calculating self-employment tax obligations

Frequently Asked Questions