Coast FIRE: Invest Now, Coast to Retirement

## What Is Coast FIRE?

Coast FIRE is the point at which you have invested enough money that — even without a single additional contribution — your portfolio will grow to your full FIRE number by the time you reach traditional retirement age (typically 65).

The analogy: you have climbed to the top of the hill, and now you can coast downhill the rest of the way without pedaling.

## The Coast FIRE Formula

Coast FIRE Number = Full FIRE Target ÷ (1 + Annual Return)^Years to Traditional Retirement

**Example**: - Full FIRE Number: $1,250,000 (planning to spend $50,000/year in retirement) - Current age: 35 - Traditional retirement age: 65 (30 years to grow) - Expected annual return: 7%

Coast FIRE Number = $1,250,000 ÷ (1.07)^30 = $1,250,000 ÷ 7.61 = **$164,200**

That means: if you have $164,200 invested at age 35 and never invest another dollar, your portfolio will grow to $1,250,000 by age 65.

## Coast FIRE by Age (to reach $1M by 65 at 7% returns)

| Current Age | Coast FIRE Number Needed | |------------|--------------------------| | 25 | $131,000 | | 30 | $184,000 | | 35 | $258,000 | | 40 | $362,000 | | 45 | $508,000 | | 50 | $713,000 | | 55 | $1,000,000 |

The earlier you hit Coast FIRE, the less you need saved.

## Why Coast FIRE Changes Everything

The psychological shift when you hit Coast FIRE is profound. Suddenly: - You no longer *need* to save aggressively - A lower-paying job that you enjoy is financially viable - You can afford to take career risks - Burnout risk decreases dramatically

Many FIRE practitioners describe hitting Coast FIRE as the moment financial stress largely disappears — even though they have not yet retired.

## The Coast FIRE Strategy in Practice

**Phase 1: The Sprint (Years 1-X)** Invest as aggressively as possible to reach your Coast FIRE number. Cut expenses, maximize contributions, build income. This phase requires the highest financial discipline.

**Phase 2: The Coast (Years X to Retirement)** Once you hit Coast FIRE, you enter maintenance mode. You still need to earn enough to cover living expenses, but you no longer need to invest anything extra. This freedom to choose lower-stress, lower-paying, or more meaningful work is the heart of Coast FIRE.

**Phase 3: Traditional (or Early) Retirement** Your portfolio has grown to your full FIRE number. Full financial independence achieved.

## Common Questions About Coast FIRE

**Can I withdraw from my Coast FIRE portfolio before 65?** Yes — but doing so changes your calculations. If you withdraw money, the portfolio grows more slowly and you will not hit your full FIRE number without additional contributions.

**What if I hit Coast FIRE but want to retire before 65?** You need to do additional investing. Coast FIRE by definition assumes no additional contributions until traditional retirement age. If you want to retire at 55, recalculate with 55 as your target.

**Is Coast FIRE risky?** Less risky than traditional FIRE in some ways — you have 30+ years of compounding time, which smooths out short-term volatility. The main risk is that you need to keep earning enough to cover living expenses, so job security matters.

## Calculate Your Coast FIRE Number

[Use our free FIRE calculator →](/) to find your Coast FIRE number. Enter your full FIRE target, current age, and target retirement age, then check the Coast FIRE mode to see exactly how much you need invested today to coast to retirement.

The number might surprise you — it is often far more achievable than the full FIRE number.