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Coast FIRE: $100K Saved, Retire at 67

With $100K saved at age 30 and a target retirement age of 67, your Coast FIRE number is $244,218. You're $144,218 short of your Coast FIRE target. With additional savings of $10,000/year, you could reach your Coast FIRE number in approximately 9 years, after which your investments would grow to $1,000,000 on their own by age 67.

Personal Details

Finances

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Assumptions

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Coast FIRE Number

$244,218

How much you need saved today so compound growth finishes the job

Coast Status

100+ more years of saving needed

Summary

Traditional FIRE Number$1,000,000
Coast FIRE Number$244,218
Current Savings$100,000
Surplus / Deficit-$144,218
Years Until Coast100+

What This Means

Coast FIRE means having enough invested that compound growth alone will bring your portfolio to your full FIRE number by your target retirement age, without any additional contributions. Your full FIRE number is $1,000,000, calculated as 25x your $40,000 annual expenses using the 4% safe withdrawal rate. To find your Coast FIRE number, we discount $1,000,000 back 37 years at a 3.9% real return (7% nominal minus 3% inflation), giving $244,218. With $100K saved, you're $144,218 short. Continuing to save $10K/year would close the gap in roughly 9 years, after which you could stop all retirement contributions.

Frequently Asked Questions

What is the Coast FIRE number with $100K saved?
To retire at 67 with $40,000 in annual expenses, your Coast FIRE number is $244,218. This is the amount you need invested today at age 30 so that compound growth at a 3.9% real return reaches your full FIRE number of $1,000,000 by age 67, with no additional contributions.
Can I stop saving for retirement with $100K?
Not yet. Your Coast FIRE number is $244,218, and you currently have $100K saved. You need an additional $144,218 invested to reach Coast FIRE. With $10K/year in additional savings, you'd reach this milestone in approximately 9 years.
How does retiring at 67 affect my Coast FIRE number?
Retiring at 67 gives your investments 37 years to grow from age 30. A later retirement age means a lower Coast FIRE number because compound growth has more time to work. Your Coast FIRE number of $244,218 is calculated by discounting the $1,000,000 FIRE number back 37 years at a 3.9% real return.

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