Find your Financial Independence target using the 4% safe withdrawal rate — updated for 2025.
Your Details
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Include housing, food, healthcare, travel — everything.
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$
7%
Historical S&P 500 real return ≈ 7% after inflation.
4%
The Trinity Study suggests 4% for a 30-year retirement.
Your FIRE Projection
YOUR FIRE NUMBER
$1,500,000
The nest egg you need to never work again
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Years to FIRE
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FIRE Age
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Progress
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Monthly Savings Needed
Current savings0%
💡 Key Insight
Enter your details above to see your personalized FIRE analysis.
How the FIRE Number is calculated
The FIRE Number is based on the 4% Rule from the Trinity Study (1998), which found that withdrawing 4% of your portfolio annually had a very high historical success rate over 30-year retirements.
FIRE Number = Annual Spending ÷ Safe Withdrawal Rate
Example: $60,000 ÷ 0.04 = $1,500,000
Years to FIRE = log(FIRE Number / Current Savings) ÷ log(1 + Annual Return)
→ Solved using compound growth formula with monthly contributions
Source: Bengen (1994), Trinity Study (1998). The 4% rule assumes a diversified portfolio of 50–75% equities.
Frequently Asked Questions
What is a FIRE Number? ▼
Your FIRE Number is the total investment portfolio size you need to sustain your lifestyle indefinitely without working. It's calculated by dividing your annual expenses by your safe withdrawal rate. If you spend $50,000/year and use the 4% rule, your FIRE number is $1,250,000.
Is the 4% rule still valid in 2025? ▼
The 4% rule was established for 30-year retirements. For early retirees planning 40–50 year retirements, many financial planners recommend a more conservative 3–3.5% withdrawal rate. You can adjust the SWR slider above to model different scenarios.
Does this include Social Security? ▼
No. This calculator gives you your gross FIRE Number. If you plan to receive Social Security or a pension, you can reduce your annual spending in the calculator by the expected annual benefit to get a more accurate target.
What's a realistic return rate to use? ▼
The S&P 500 has returned approximately 10% historically, or about 7% after adjusting for inflation. For a conservative estimate, use 6–7%. For an aggressive all-equity portfolio, 8–9% may be reasonable. The calculator uses nominal returns — consider setting it 1–2% lower to account for inflation drag.
What types of FIRE exist? ▼
Lean FIRE — Retire on $40,000/year or less with frugal living. Fat FIRE — Retire with $100,000+/year in spending. Coast FIRE — Save enough early that compound interest takes you to your number without further contributions. Barista FIRE — Semi-retire with part-time income covering some expenses.
⚠️ Disclaimer: This calculator is for educational purposes only and does not constitute financial advice. Results are projections based on assumed rates of return. Actual investment returns vary and past performance is not indicative of future results. Consult a licensed financial advisor for personalized guidance.
Estimate your quarterly IRS estimated tax payments as a 1099 freelancer or self-employed individual — 2025 tax year.
Your Income & Situation
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$
Software, equipment, home office, travel, subscriptions.
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$
Solo 401k, SEP-IRA — deductible contributions reduce taxable income.
2025 Tax Estimate
PAY EACH QUARTER (APPROX.)
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Due: Apr 15 · Jun 16 · Sep 15 · Jan 15, 2026
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Net Profit (taxable)
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Self-Employment Tax
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Federal Income Tax
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Effective Tax Rate
Tax as % of gross income—
💡 Key Insight
Enter your income above to see your quarterly payment estimate.
2025 Quarterly Due Dates (IRS):
Q1 → April 15, 2025 | Q2 → June 16, 2025
Q3 → September 15, 2025 | Q4 → January 15, 2026
How freelance taxes are calculated
As a self-employed individual, you pay two types of federal tax: self-employment tax (Social Security + Medicare) and regular income tax. Unlike W-2 employees, no one withholds taxes for you — hence quarterly payments.
Net Profit = Gross Income − Business Expenses
SE Tax = Net Profit × 0.9235 × 15.3%
(You deduct half of SE tax before income tax)
Taxable Income = Net Profit − (SE Tax ÷ 2) − Standard Deduction − Retirement
Federal Income Tax = Applied to Taxable Income using 2025 brackets
Total Annual Tax = SE Tax + Federal Income Tax
Quarterly Payment = Total Annual Tax ÷ 4
Source: IRS Publication 505, Schedule SE, 2025 tax brackets. Standard deduction 2025: $15,000 (single), $30,000 (MFJ), $22,500 (HOH).
Frequently Asked Questions
Who needs to pay quarterly taxes? ▼
You must pay quarterly estimated taxes if you expect to owe at least $1,000 in federal taxes for the year and your withholding covers less than 90% of your current year tax liability (or 100% of last year's tax). This applies to freelancers, contractors, sole proprietors, and anyone with significant 1099 income.
What is the self-employment tax rate? ▼
The SE tax rate is 15.3% — comprising 12.4% for Social Security and 2.9% for Medicare. However, it's applied to 92.35% of net earnings (not 100%), and you can deduct half of SE taxes paid when calculating your income tax. This calculator handles all of this automatically.
What happens if I miss a quarterly payment? ▼
The IRS charges an underpayment penalty, currently around 8% per year (annualized) on the amount you underpaid for each quarter. It's not catastrophic, but worth avoiding. The penalty applies per quarter — so missing Q1 doesn't affect Q2's penalty calculation.
Does this include state taxes? ▼
No — this calculator covers federal taxes only. Most states with income tax also require quarterly estimated payments. The amount varies significantly by state. Nine states (including Texas, Florida, and Nevada) have no state income tax.
How do I actually pay the IRS? ▼
The easiest method is the IRS Direct Pay portal at irs.gov/payments — free, no account needed. You can also use EFTPS (Electronic Federal Tax Payment System) for scheduled payments, or pay by check using Form 1040-ES vouchers.
⚠️ Disclaimer: This tool provides estimates for educational purposes only. Tax laws change frequently and individual situations vary. This is not tax advice. Consult a CPA or tax professional for your specific situation. 2025 tax brackets and standard deductions are used.