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Financial Freedom Calculator

Find out the exact dollar amount you need in the bank to never answer a Slack message again. This FIRE calculator (Financial Independence, Retire Early) determines how much cash you need invested to quit your job today, based on your monthly burn rate and the "4% rule." Perfect for entrepreneurs, remote workers, or anyone dreaming of financial independence. No complex spreadsheets just instant math. Free, no signup required. It helps you move from guesswork to a confident decision with clear inputs and readable output. Adjust values, compare scenarios, and share results quickly. Runs client-side in your browser, with no signup required. Built for speed, clarity, and repeat use. Method details for Financial Freedom Calculator: The result model exposes each formula and equation, applies deterministic calculation steps, uses explicit decimal rounding, and keeps unit assumptions visible so outputs are auditable.

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Rent, food, insurance, subscriptions everything you spend per month

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Conservative: 4% (default), Moderate: 6-8%, Aggressive: 10%+

Advanced Settings

Historical US average is ~3%. Adjusts your target upward to maintain purchasing power.

S&P 500 historical average is ~10% nominal, ~7% after inflation.

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How much you invest per month toward your freedom number.

Lifestyle creep or expected expense increases beyond inflation. 0 = expenses stay flat.

How to Use This Tool

  1. Step 1 - Enter your monthly expenses (rent, food, insurance, subscriptions everything)
  2. Step 2 - Input your current savings and expected annual investment return (default: 4%)
  3. Step 3 - Click 'Calculate Freedom Number' to see your target portfolio size and progress toward financial independence

Why the 4% Rule?

The 4% Safe Withdrawal Rate comes from the Trinity Study, which analyzed 30-year retirement scenarios. If you withdraw 4% of your portfolio annually (adjusted for inflation), historical data shows a 95%+ success rate of your money lasting forever. The formula: Annual Expenses ÷ 0.04 = Target Portfolio.

For example, if you spend $5,000/month ($60,000/year), you need $1.5 million invested to generate $60,000 annually at 4% returns. This assumes a diversified portfolio (stocks, bonds, index funds) and conservative withdrawal strategy.

Pro tip: Lower your monthly expenses to drastically reduce your target number. Cutting $500/month saves you $150,000 in required capital. Use index funds like VTSAX, VOO, or VTI for low-cost, passive growth.