FIRE Calculator

Financial Independence, Retire Early - Calculate your path to freedom

Free planning tool by Money365.Market

Your Finances

Current Age:

Your current age. This determines how many years you have until reaching FIRE and affects compound growth calculations.

years

Current Savings:

Your total invested assets today including retirement accounts (401k, IRA), brokerage accounts, and savings. Don't include home equity or cars.

Annual Income:

Your total yearly income before taxes. Include salary, bonuses, side income, and any regular earnings.

$/year

Annual Expenses:

Your yearly spending on living costs. This is crucial for calculating your FIRE number (25x your annual expenses for the 4% rule).

$/year

Monthly Investment:

Extra monthly amount you invest beyond your savings rate. This could be additional contributions to brokerage or retirement accounts.

$/month

Expected Return:

Average annual investment return. Historically, the S&P 500 returns ~7% after inflation. Conservative: 5-6%, Moderate: 7-8%, Aggressive: 9-10%.

% annual

Withdrawal Rate:

The % you withdraw yearly in retirement. The famous '4% rule' suggests 4% is safe for 30+ years. Lower rates (3-3.5%) are more conservative.

% SWR

FIRE Strategy

Choose your FIRE approach: Lean (minimal lifestyle), Normal (standard 4% rule), Fat (comfortable lifestyle), or Coast (let investments grow without adding more).

Annual

$30K

Monthly

$2,500

Rate

38%

FIRE Number

$1.25M

Years to FIRE

21 (Age 51)

Savings Rate

37.5%

Progress

4.0%

FIRE Progress

4.0%

FIRE Variants

Lean

$750K

Traditional

$1.3M

Fat

$2.1M

Coast

$117K

Portfolio Growth Projection

Year-by-Year Projection

Age	Portfolio	Contrib.	Status
30	$50,000	$24K	...
35	$208,145	$24K	...
40	$429,952	$24K	...
45	$741,048	$24K	...
50	$1.18M	$24K	...
55	$1.45M	$0K	FIRE!
60	$1.71M	$0K	FIRE!
65	$2.02M	$0K	FIRE!
70	$2.40M	$0K	FIRE!
75	$2.89M	$0K	FIRE!
80	$3.50M	$0K	FIRE!

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Frequently Asked Questions

What is FIRE?

FIRE stands for Financial Independence, Retire Early. It is a movement focused on extreme savings and investment to achieve financial freedom much earlier than traditional retirement age. The goal is to accumulate enough wealth that your investment returns can cover your living expenses indefinitely.

What is the 4% rule (Safe Withdrawal Rate)?

The 4% rule suggests you can withdraw 4% of your portfolio annually (adjusted for inflation) with a high probability of not running out of money over a 30-year retirement. This means you need 25x your annual expenses to reach FIRE (1/0.04 = 25). Some researchers suggest a 3.5% SWR may be safer for early retirees with 40-50+ year horizons.

What is the difference between Lean, Fat, and Coast FIRE?

Lean FIRE: Achieving FIRE with minimal expenses and a frugal lifestyle (typically under $40K/year). Traditional FIRE: Standard FIRE with comfortable but modest spending. Fat FIRE: FIRE with a higher spending level and more luxurious lifestyle ($80K+/year). Coast FIRE: Having enough invested that compound growth alone will fund retirement at 65, allowing you to work just to cover current expenses without saving more.

How much do I need to retire early?

Your FIRE number is typically 25x your annual expenses (based on the 4% rule). For example, if you spend $50,000/year, your FIRE number is $1,250,000. Your savings rate is the most important factor: a 50% savings rate means approximately 17 years to FIRE, while a 75% rate can get you there in about 7 years.

What return rate should I assume for FIRE planning?

A commonly used assumption is 7% nominal return (roughly 4-5% after inflation), based on the historical performance of the S&P 500. Conservative planners use 5-6%, while aggressive ones might use 8-10%. The key is to use a real (inflation-adjusted) return rather than nominal, and to stress-test your plan with different scenarios.

How does FIRE account for inflation?

This calculator accounts for inflation by adjusting your withdrawal amount each year after reaching FIRE. Your annual expenses grow with inflation (default 2.5%), meaning you withdraw more each year in nominal terms to maintain the same purchasing power. The real return (nominal return minus inflation) determines your actual portfolio growth rate.

Important Disclaimer — Not Investment Advice

Disclaimer: This article is provided by Money365.Market for general information and educational purposes only. It is not financial advice, a personal recommendation, or an inducement to buy, sell, or invest in any security or product. Capital is at risk and the value of investments can go down as well as up; past performance does not indicate future results. You should seek independent advice from an FCA-authorised adviser before making any financial decision.

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Free FIRE Calculator by Money365.Market