Coast FIRE at 50 on a $300K Salary
FIRE Number
$4.9M
Target Retirement Age
65
Years to FIRE
15
Monthly Savings Needed
$6K
Coast FIRE at 50 on a $300K salary is can be reached very quickly — the primary challenge is avoiding the lifestyle creep that erodes high-income savings rates. Your FIRE target is $4.9M ($196K/year at 65% income replacement). To coast there from age 50, you need $1.8M invested by then — that's your Coast FIRE number. At 7% real returns over 15 years, $1.8M compounds to approximately $4.9M by age 65.
Starting at age 37 with $75K, saving $6K/month for 13 years reaches $1.8M — a 25% savings rate on your $300K gross income. This is a meaningful but achievable savings rate for a focused saver at this income level. After 50, you no longer need to save for retirement — you only need to earn enough to cover your $16K/month in living expenses.
The 50-year coast window for $300K earners works particularly well because the 15-year growth window captures two complete market cycles and multiple doublings at historical return rates. Social Security at 67–70 adds $3K/month as a meaningful backstop.
One planning note: the $300K + age 50 scenario works best with tax-advantaged account prioritization. Max your employer 401k match ($2000/month in free matching at 4%), then Roth IRA ($583/month = $7,000/year), then additional 401k contributions up to $6K/month total. Keeping investment costs low (under 0.1% expense ratio) on a $1.8M portfolio saves approximately $16K per year in avoided fees — compounding into significant additional wealth over 15 years.