Freelancer Quarterly Tax Calculator — All 50 States & DC
Calculate your federal and state quarterly estimated tax payments as a freelancer or self-employed individual across all 50 states and DC. Covers SE tax, QBI deductions, OBBBA 2026 provisions, safe harbor rules, and state income tax. Select your state to begin.
From W-2 Box 2
Used to calculate safe harbor quarterly amount
The Qualified Business Income (QBI) deduction lets most self-employed individuals deduct 20% of net business income from taxable income. Phases out for higher earners.
Federal Tax Laws Governing Freelancer Estimated Taxes
The following Internal Revenue Code sections and IRS provisions govern self-employment tax, estimated payment requirements, and available deductions for freelancers and self-employed individuals across all states.
| Provision | Citation | What It Governs |
|---|---|---|
| Self-Employment Tax | IRC § 1401 | Imposes 15.3% SE tax on net self-employment income (12.4% Social Security + 2.9% Medicare); Additional 0.9% Medicare surtax above threshold |
| Deduction for SE Tax Paid | IRC § 164(f) | Allows deduction of 50% of SE tax from adjusted gross income, reducing the effective tax burden on self-employment earnings |
| Qualified Business Income Deduction | IRC § 199A | Up to 20% deduction on qualified business income for eligible self-employed filers; subject to income thresholds and business type limitations |
| Estimated Tax Requirement & Safe Harbor | IRC § 6654 | Requires quarterly estimated payments when expected tax owed exceeds $1,000; safe harbor: pay 100% (or 110% if AGI > $150K) of prior year tax to avoid penalties |
| OBBBA 2026 Provisions | Pub. L. 119-xx (2026) | Modified QBI deduction thresholds and certain SE tax provisions effective tax year 2026; parameters reflected in state-specific calculators |
Abbreviations: IRC = Internal Revenue Code · AGI = Adjusted Gross Income · SE = Self-Employment · QBI = Qualified Business Income · OBBBA = One Big Beautiful Bill Act
Frequently Asked Questions
Who needs to make quarterly estimated tax payments?
Freelancers, independent contractors, gig workers, and sole proprietors who expect to owe at least $1,000 in federal tax for the year after subtracting withholding and refundable credits must make quarterly estimated payments (IRC § 6654). Most states have similar requirements, often with lower thresholds (e.g., $500 in California or New York).
When are quarterly tax payments due?
The IRS estimated tax due dates for a standard tax year are generally April 15 (Q1), June 15 (Q2), September 15 (Q3), and January 15 of the following year (Q4). If a due date falls on a weekend or federal holiday, the deadline moves to the next business day. State payment schedules generally align with federal dates, though some states (such as California) use different payment schedules or percentages.
What is the safe harbor rule for estimated taxes?
The safe harbor rule protects you from IRS underpayment penalties if you pay at least 90% of your current year tax liability or 100% of your prior year tax liability (110% if your adjusted gross income exceeded $150,000). By paying the safe harbor amount divided into equal quarterly installments, you avoid penalties even if your actual income and tax liability end up much higher.
How does the Qualified Business Income (QBI) deduction work?
Under IRC § 199A, eligible self-employed individuals and business owners can deduct up to 20% of their qualified business income (QBI) from taxable income. This deduction reduces federal income tax but does not reduce self-employment tax (Social Security and Medicare). For tax year 2026, OBBBA modified certain income thresholds and limitations.
Does my state income tax affect my quarterly payments?
Yes. Unless you live in a state with no state income tax (such as Texas, Florida, Washington, or Wyoming), you must calculate and pay both federal and state estimated taxes. State income tax rates, deductions, and estimated payment thresholds vary widely by state. Select your state above to see your exact state tax rates and estimated payment requirements.
This tool is for informational and educational reference only and does not constitute tax or financial advice. Tax laws are complex, change annually, and individual circumstances vary. Calculations are estimates based on the inputs you provide and IRS/state tax authority data. Always consult a licensed CPA or tax professional before making tax decisions.