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Investing Frameworks

Financial Independence Number

Calculate the exact amount you need invested to live off returns indefinitely. Formula: annual expenses × 25. At that amount, a 4% annual withdrawal is statistically sustainable for 30+ years according to long-term research.

Difficulty: ⭐⭐⭐ Advanced Category: Investing Frameworks
Best for

Anyone who wants to stop trading time for money at some point — regardless of traditional retirement age.

How to do it — step by step
1

Calculate your actual annual living expenses — not income, what you genuinely spend.

2

Multiply by 25. This is your Financial Independence number.

3

Track your net investable assets toward that specific number monthly.

4

Invest primarily in low-cost index funds within tax-advantaged accounts.

5

At your FI number, a 4% annual withdrawal covers expenses (based on the Trinity Study research).

Advantages & considerations
Advantages
  • Clear, specific, measurable financial goal
  • Works at any income level
  • Research-backed (Trinity Study, peer-reviewed)
Worth Knowing
  • Sequence of returns risk in early retirement years
  • Requires long-term expense discipline to maintain
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