USFinNexus

FIRE Retirement Planner

Last updated: March 2026

FIRE Timeline Planner

Calculate your Financial Independence / Retire Early number and timeline.

Current Situation

Current Savings Rate: 50.0%

Assumptions

Return after accounting for inflation (typically 5-7%)

Commonly 3.5% - 4.0%

Your FIRE Number

$0

Years to FIRE

0 Years

Retirement Age

0 Years Old

Portfolio Growth vs. FIRE Target

Understanding Your FIRE (Financial Independence, Retire Early) Number

The FIRE movement is built on a simple premise: save aggressively, invest wisely, and reach a point where your investments generate enough income to cover your living expenses for the rest of your life. This free FIRE Timeline Planner helps you calculate exactly how much money you need to save and how many years it will take to get there.

The 4% Rule and Your FIRE Number

Your "FIRE Number" is the total portfolio value required to sustain your lifestyle. It is traditionally calculated using the 4% Rule (also known as the Safe Withdrawal Rate). The rule states that if you withdraw 4% of your portfolio in your first year of retirement, and adjust that amount for inflation each subsequent year, your money is highly likely to last 30+ years.

Formula: Annual Expenses × 25 = Your FIRE Number (Assuming a 4% Withdrawal Rate)

If you want to be more conservative (e.g., planning for a 50-year retirement or assuming lower market returns), you might choose a 3% or 3.5% withdrawal rate, which requires multiplying your expenses by 33.3 or 28.5, respectively.

The Most Important Metric: Your Savings Rate

When it comes to retiring early, your investment return matters, but your Savings Rate is the true accelerator.

  • A 10% savings rate means it will take roughly 51 years to retire.
  • A 30% savings rate cuts that time to 28 years.
  • A 50% savings rate drops it to just 17 years.
  • A 70% savings rate means you can retire in under 9 years!

Types of FIRE

1. Lean FIRE:

Retiring on a minimalist budget. Often requires a FIRE number under $1 million.

2. Fat FIRE:

Retiring with a luxurious lifestyle. Usually requires a FIRE number well over $2.5 million.

3. Barista FIRE:

Quitting your high-stress job, but working part-time (like at a coffee shop) just to cover living expenses and get health insurance, while letting your investments grow in the background.

4. Coast FIRE:

You've saved enough early in life that, without adding another dime, compound interest will grow your portfolio to your traditional retirement goal by age 65. You just need to earn enough to cover your current expenses.

FIRE Movement — Frequently Asked Questions

What is the 4% Rule?

The 4% rule is a rule of thumb used to determine a safe withdrawal rate for retirement. It suggests that you can withdraw 4% of your investment portfolio in your first year of retirement, and then adjust that amount for inflation each year, without running out of money for at least 30 years. It is based on the Trinity Study.

Is the 4% rule still safe in 2026?

Many financial advisors still use the 4% rule as a baseline, but some argue for a more conservative 3.5% or 3.3% withdrawal rate if you are retiring very early (e.g., in your 30s or 40s), because your money needs to last 40-50 years instead of 30. Our calculator lets you adjust the safe withdrawal rate to test different scenarios.

What does "Real Investment Return" mean?

"Real return" is your investment return minus inflation. Historically, the S&P 500 has returned about 10% annually before inflation. With average inflation around 3%, the "real" return is roughly 7%. Using real returns allows you to calculate everything in today's dollars.

How do I speed up my FIRE timeline?

There are only two ways: increase your income or decrease your expenses. Decreasing expenses is actually twice as powerful because it not only increases your savings rate (allowing you to invest more), but it also lowers your target FIRE number (because you need less money to live on).

Continue your financial research

Use these closely related USFinNexus guides and tools to plan your next step.

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Illustrative comparison scenarios

$10,000 initial balance and $500 end-of-month deposits for 20 years. Illustrative nominal annual returns compounded monthly; tax, fees and inflation excluded. Returns are not guaranteed.
Assumed returnContributionsProjected balance
0%$130,000$130,000
3%$130,000$182,359
5%$130,000$232,643
7%$130,000$300,851
9%$130,000$394,035

Educational scenarios, not quotes, approvals, investment forecasts or tax advice. See methodology and limitations.