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How Soon Can You Reach Your Personal FIRE Point?

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FIRE, the acronym for Financial Independence, Retire Early, connects with many people’s dream of “firing” their boss. Do you know how long it’ll be before you reach that point?

A Good Starting Point Tool

On the “Four Pillar Freedom” blog, “Zach” shared his Early Retirement Grid, showing how many years you’d need to reach your FIRE point. He based his grid on current after-tax annual income and annual spending. The assumptions behind his results include:

  • $0 currently saved for retirement
  • 5% annual return on investments
  • 4% initial draw in retirement

I love the idea behind this tool, but it suffers from several shortcomings:

  1. The grid only works for incomes of $25k-$100k and annual expenses of $20k-$95k.
  2. The grid excludes the possibility that you may want to draw more in retirement than your after-tax, after-savings income.
  3. The grid ignores a critical factor – inflation. This will gradually increase your expenses in dollar terms, even if you keep buying identical products and services.
  4. The grid ignores increases in your income.
  5. The 5% annual return seems too low. If you have no retirement savings you’re probably young enough to accept market fluctuations and invest 100% in equities. Equity returns have historically been much higher than 5%, either before or after accounting for inflation.
  6. According to recent research, 4% initial draw is too aggressive given likely future market returns.

Addressing the Limitations of the Four Pillars Grid

To address the above shortcomings, I decided to create my own tool. This tool estimates the years until your FIRE point for a given savings rate and income replacement rate in retirement. I too assumed $0 saved for retirement, but made a few other adjustments to help improve accuracy.

  1. Since I don’t assume any specific income, the grid below works for all income levels.
  2. I include cells above the diagonal. This is because if you’re uber-frugal now to save aggressively, you may choose to work longer for a more comfortable retirement.
  3. Since I look at the replacement rate for your income in retirement, rather than annual expenses in dollars, we can safely ignore inflation.
  4. The assumption I make is that your income will more-or-less track inflation. This is not perfect, since income often increases faster than inflation. However, this is less inaccurate than assuming constant income in nominal dollars.
  5. My annual investment return assumption is 6% above inflation. Historically, equities returned more than 6.9% annualized from 1927 to 2019 after adjusting for inflation.
  6. My initial draw assumption for retirement is 3% of your portfolio, in line with recent research.

How Soon You Can Reach Your FIRE Point

So, without further ado, here it is…

The above grid shows how long it will take you to reach FIRE, depending on your retirement savings rate and your desired retirement income replacement rate.

Let’s walk through an example: no matter your income in dollars, if you’re saving 30% toward retirement, you’d look at the column with 30% in the lowest, white cell. If you want to replace 70% of income, you’d go up that column until you reach the row with 70% in its leftmost, white cell. This shows you’ll need 29.8 years to replace 70% of current income. Move three cells up and you’ll see it will take 32 years to replace 82% of your income.

What the Grid Means for Your FIRE Point

The Cost of a Low Savings Rate

If you’re 22, want to replace your non-savings income, and save only 6%, you won’t likely be able to retire much before age 82!

The Power of Increasing Your Savings Rate

If you save 10% of income and plan to replace 90% of income, you’ll need 50.5 years to retire! Increase savings to 30% and reduce retirement income to 70%, and you’ll reach FIRE in 29.8 years. That saves you more than 20 years of work! Save half your income and live on the same after-savings income in retirement and you’ll reach FIRE in 18.9 years. That saves you another decade of work!

The Power of Working (a bit) Longer

As mentioned above, save 30% of income and plan on the same 70% you spend now, and you’ll need 29.8 years to reach FIRE. Work 7.4% or 2.2 years longer, and you can replace 82% of your income. That’s a 17%+ increase in your retirement income!

Savings Rate Needed for “Normal” Retirement Age

Say you’re 22, plan to replace all your non-savings income, and want to retire by 67. You’ll need to save over 12% of your income for retirement.

The Impact of an Employer Match Depends on Your Choices

Say your employer(s) match(es) your savings dollar for dollar up to 6%. Say you then use that to reduce your own contributions (relative to the previous scenario) to 6%. Your replacement rate will need to be 94%, which pushes back your retirement more than 3 years, past age 70. On the other hand, continue saving 12% plus the 6% match, and you can expect to retire before age 63.

The Impact of Social Security Benefits

Say the Social Security Administration’s current estimate of your benefits promises to replace 25% of your income. Let’s then admit that at best, they will deliver 80% of that, or 20% of your income. If you start with 30% savings and 70% replacement, Social Security will shave 4.6 years off your FIRE time.

The Bottom Line

The grid above lets you estimate how long you need to reach your own personal FIRE moment, depending on how aggressively you save and how much income you’ll want in retirement. Using percentages lets you to use the tool no matter how high or low your income. The above examples walk through the impacts of low savings, increased savings, working longer, employer match, and Social Security benefits.

Disclaimer: The information in this article is not intended to encourage any lifestyle changes without careful consideration and consultation with a qualified professional. This article is for reference purposes only, is generic in nature, is not intended as individual advice and is not financial or legal advice.

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About the Author

Opher Ganel
Opher Ganelhttps://www.opherganel.com
Consultant | physicist | systems engineer | writer | financial strategist for professionals (opherganel.com) | avid reader | amateur photographer & artist

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