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. Updated with 2024 federal tax brackets, standard deductions, and contribution limits.
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| Tax Rate | Single Filer | Married Filing Jointly |
|---|---|---|
| 10% | $0 – $11,600 | $0 – $23,200 |
| 12% | $11,601 – $47,150 | $23,201 – $94,300 |
| 22% | $47,151 – $100,525 | $94,301 – $201,050 |
| 24% | $100,526 – $191,950 | $201,051 – $383,900 |
| 32% | $191,951 – $243,725 | $383,901 – $487,450 |
| 35% | $243,726 – $609,350 | $487,451 – $731,200 |
| 37% | Over $609,350 | Over $731,200 |
This quarterly tax calculator uses the latest 2024 federal tax brackets, standard deduction of $14,600 (single) / $29,200 (married filing jointly), and updated contribution limits. The Social Security wage cap for 2024 is $168,600, and the 401(k) contribution limit is $23,000.
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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.