The Simple Math Behind Early Retirement

On February 16, 2025 By newsroom Topic: Saving And Investing Money

Core Idea

  • Early Retirement Formula: Save a high percentage of your income to retire early by living off the returns of your investments.
  • Key Determinant: Your savings rate (percentage of take-home pay saved).
  • The more you save and the less you spend, the faster you can retire.

How Savings Rate Determines Retirement Timeline

Savings Rate: The ratio of money saved to total take-home pay.

Time to Retirement: - Spending 100% of income: Never retire (infinite working years). - Saving 50% of income: Retire in ~16 years. - Saving 75% of income: Retire in ~7 years.

Example Savings Rates and Years to Retirement:

| Savings Rate | Working Years Until Retirement | |--------------|---------------------------------| | 10% | 51 years | | 20% | 37 years | | 50% | 16 years | | 75% | 7 years |


Key Assumptions

Investment Returns: You earn a conservative 5% real return after inflation during your saving years.

Withdrawal Rate: You withdraw 4% annually from your investment portfolio post-retirement, adjusted for inflation.

Sustainability: Your portfolio lasts indefinitely, only withdrawing investment gains, leaving the principal intact.


The Power of Cutting Spending

  • Double Impact:
  • Increases the amount saved each month.
  • Decreases how much you need to live on, reducing your retirement portfolio target.
  • Efficiency Mindset: Learning to live efficiently reduces lifetime spending needs, accelerating financial independence.

Example:

  • Saving $5,000/year on discretionary expenses:
  • Adds $5,000 to savings annually.
  • Reduces required retirement portfolio by $125,000 (based on a 4% withdrawal rate).

How to Retire in 10 Years

Live on 35% of Take-Home Pay: Requires saving 65%.

Optimize Spending: Eliminate unnecessary expenses (e.g., cable, luxury coffee).

Invest Consistently: Leverage compound interest and reinvest earnings.


Challenges and Common Objections

"It’s Impossible": - Many dismiss these ideas without exploring actionable steps to increase savings and reduce spending.

Lifestyle Changes: - Early retirement often requires substantial adjustments in consumption and lifestyle priorities.


Tracking Progress

Tools: - Use apps like Mint or Personal Capital to categorize expenses and track savings automatically.

Method: - Regularly review spending categories and adjust where necessary.


Summing it up

  • Simple Formula: Retirement readiness is a direct function of how much you save versus how much you spend.
  • Take Action:
  • Start by assessing your savings rate.
  • Identify areas to cut costs.
  • Invest excess savings consistently.

With a high enough savings rate and disciplined lifestyle, early retirement can become a reality, allowing financial independence in as little as a decade.


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