Free tool

FIRE Calculator

Estimate your financial independence number and how many years it could take to get there.

Your FIRE number
$1,125,000
Years to FI
17 yrs
Monthly savings target
$2,500

At a 4% withdrawal rate you would need about $1,125,000 invested to cover $45,000 of annual expenses. At your current savings and a 7% return, that is roughly 17 years away.

Educational estimate, not financial advice. The 4% rule is a guideline, not a guarantee.

How it works

Your FIRE number is your annual expenses divided by your withdrawal rate. The timeline grows your current investments plus annual savings at your expected return until you reach that number. Lowering expenses pulls the number down and the date closer.

How OptiAI helps

OptiAI connects your FIRE target to your real net worth and spending picture, so your independence timeline updates as your life does — not just when you remember to recalculate.

Frequently asked questions

What is a FIRE number?

Your FIRE (Financial Independence, Retire Early) number is the amount invested that could sustainably cover your annual expenses — commonly estimated as annual expenses divided by your withdrawal rate (for example, 4%).

What withdrawal rate should I use?

The 4% rule is a common starting point, implying a FIRE number of 25 times annual expenses. Some choose a more conservative 3 to 3.5%. It is a guideline, not a guarantee.

How are the years calculated?

The calculator grows your current investments and annual savings at your expected return until the balance reaches your FIRE number.

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