How do I calculate my Coast FIRE number if I'm 32 with $180,000 invested and spending $60,000 a year

If you're 32 with $180,000 invested and $60,000 of yearly spending, the question is whether your money can retire before you do. Here's how to work it out in a few steps.

How to calculate your Coast FIRE number

Target = $60,000 × 25 = $1,500,000. Then discount that back over the years you have until retirement. With a 7% real return and 30 years, $1.5M today is worth about $196,000—so you're at roughly 92% of the coast line.

Coast FIRE calculation: common questions

FAQ

What is Coast FIRE exactly?
It's the point where your invested savings will grow to your full retirement number on their own, assuming a steady return rate, even if you stop adding new money. After that, work becomes optional for the savings part.

How do I calculate my Coast FIRE number?
Take your target annual spending, multiply by 25 (the 4% rule), then discount that future target back to today using your expected return rate and the years until retirement. The formula is: coast number = target / (1 + rate)^years.

For $180,000 invested and $60,000 spending, do I hit Coast FIRE?
Roughly: $60,000 × 25 = $1.5M target. At 7% real return over 30 years, $1.5M discounted back is about $196,000. So at $180,000 you're close but not quite there yet—another year or two of contributions does it.

Does the 4% rule still hold?
It's a planning baseline, not a guarantee. Sequence-of-returns risk and inflation mean you should stress-test with 5% or 6% withdrawal in bad years. Treat 4% as the starting assumption, not gospel.

What return rate should I use?
A common real (after-inflation) assumption is 6-7% for a broad equity portfolio. If you use 4% to be conservative, your coast number goes up; if you use 8%, it goes down. Pick one and stay consistent.

What if I'm older than 32?
The math is the same, you just discount over fewer years, which raises the coast number. That's why starting earlier is so powerful—time does most of the work.

Rather than doing the compound math by hand, drop your numbers into the Coast FIRE Calculator and it gives you the target, the gap, and the years to coast in one screen.