Estimated Tax Payments Guide for Self-Employed (2026)
Calculate quarterly estimated tax payments for self-employed income. Understand safe harbor rules, penalty avoidance, and payment timing.
Summary
Self-employed workers must pay taxes quarterly to avoid underpayment penalty. This guide explains payment calculation, safe harbor rules, and quarterly deadlines.
Key Steps
- 1Calculate annual tax liability: income tax + self-employment tax.
- 2Divide into 4 quarterly payments: April 15, June 15, Sept 15, Jan 15.
- 3Apply safe harbor: pay 100% of prior year tax (110% if AGI > $150K).
- 4Track payments: use Form 1040-ES vouchers or electronic payment.
- 5Avoid underpayment penalty: meet safe harbor or 90% of current year tax.