Calculate quarterly estimated tax payments with federal + state taxes, safe harbor rules, and payment deadlines for all 50 US states. Free, fast, and private — runs entirely in your browser.
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Self-employed individuals, freelancers, and anyone who expects to owe $1,000+ in taxes and doesn't have sufficient withholding from wages.
You can avoid underpayment penalties by paying at least 100% of last year's tax liability (110% if AGI > $150K) or 90% of current year's tax.
Yes, completely free with no sign-up required. All calculations run in your browser.
Yes, all 50 US states are included with current state income tax rates and brackets.
The Quarterly Tax Calculator is a free online tool that lets you calculate quarterly estimated tax payments with federal + state taxes, safe harbor rules, and payment deadlines for all 50 us states. It is part of NexTool's collection of free tools designed to help you work faster and more efficiently.
Using the Quarterly Tax Calculator is simple: visit the tool page, enter your data or input into the provided fields, and get instant results. No downloads, installations, or sign-ups are required. The tool runs directly in your web browser for maximum convenience.
The Quarterly Tax Calculator uses industry-standard formulas and algorithms to deliver reliable results. While the tool is designed for accuracy, results should be used as estimates and guidance. For critical decisions, always consult a qualified professional.
No account is required. The Quarterly Tax Calculator is completely free to use without sign-up, login, or registration. Your financial data stays in your browser and is never sent to our servers.
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Calculate quarterly estimated tax payments with federal + state taxes, safe harbor rules, and payment deadlines for all 50 US states. Free, fast, and private — runs entirely in your browser.
NexTool's Quarterly Tax Calculator is completely free to use with no sign-up required. Your data is processed directly in your browser and never sent to our servers, ensuring complete privacy and instant results.
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Self-Employment Tax: As a 1099 worker, you pay both the employer and employee portions of Social Security (12.4%) and Medicare (2.9%) taxes, totaling 15.3% on 92.35% of net earnings.
Safe Harbor Rule: To avoid underpayment penalties, pay either 90% of your current year tax or 100%/110% of your prior year tax (110% if your AGI exceeds $150K) throughout the year via quarterly estimated payments.
Common Deductions: Home office, equipment, software, health insurance premiums (self-employed), SEP-IRA or Solo 401(k) contributions, professional development, and business travel.
QBI Deduction: The Section 199A Qualified Business Income deduction allows eligible self-employed individuals to deduct up to 20% of their qualified business income.
Disclaimer: This is an estimate only. State tax rates shown are approximate. Does not account for all deductions, credits, AMT, or complex situations. Consult a qualified tax professional.