Skip to main content

FIRE Calculator

Plan your journey to Financial Independence and Early Retirement. Calculate your FIRE number, track progress, and discover strategies to retire decades earlier than traditional retirement.

FIRE math backed by live data

Withdrawal rates, COLA adjustments, and safe-income assumptions reference SSA, IRS, and BLS benchmarks so every projection matches current policy.

Benchmarks refreshed monthly after CPI and SSA updates plus annually after IRS contribution changes.

Compliance & privacy checklist

Inputs stay inside your browser until you export a PDF. Each release passes privacy, localization, and fiduciary reviews for educational readiness.

Lean FIRE
$40k/year • Frugal
Regular FIRE
$60k/year • Comfortable
Fat FIRE
$100k+/year • Luxury
Coast FIRE
Part-time work

4-step FIRE planning workflow

Document spending, withdrawal rate, investment mix, and monitoring so work-optional life stays funded.

1. Assess spending + safety buffers

Categorize essential vs. discretionary costs, map healthcare, and add one-off goals like sabbaticals or relocation.

2. Optimize savings rate

Model savings rate increases, geo-arbitrage ideas, and tax-advantaged buckets to hit your FIRE number faster.

3. Allocate growth vs. stability

Balance index funds, bonds, and cash buckets so 3-5 years of spending is safe while the rest compounds.

4. Monitor and hand off

Pipe the numbers into ROI and AI planners for scenario tests, then refresh after each market or lifestyle shift.

Choose Your FIRE Path

Current Financial Situation

FIRE Goals

3% = Very Conservative | 4% = Traditional | 5% = Aggressive

Your FIRE Journey

FIRE Number

FIRE Number

$1,250,000

Years to FIRE

18

FIRE Age

48

Progress

8%

FIRE Progress$100,000 / $1,250,000

Feasibility: Achievable

Great! You're on track to reach FIRE by age 48.

Net Worth Projection

FIRE case studies

Real-world handoffs that connect this tool with ROI, AI, and reverse calculators.

Family planning a coast-FI relocation

Dual-income parents targeting part-time work within 8 years.

  • Profile: $145k annual spend today, $2.1M FIRE number, two kids under 8.
  • Plan: Modeled geo-arbitrage, compressed spend to $110k, and shifted 10% from bonds to global equities.
  • Result: New target hit in 6.5 years and exported to the reverse calculator for education funding.
See the ROI follow-up plan

Solo engineer aiming for barista-FI

Wants part-time consulting income to cover healthcare and travel.

  • Profile: $90k annual spend target, $1.3M invested, 65/35 portfolio.
  • Plan: Tested 3.5% vs. 4% withdrawal rates, reserved five-year cash bucket, and added hobby income in AI planner.
  • Result: Safe to downshift in 18 months with 0.3% probability of depletion before age 90.
Export this to the AI planner

Understanding the FIRE Movement

What is FIRE?

FIRE stands for Financial Independence, Retire Early. It's a lifestyle movement focused on extreme savings and investment to achieve financial independence and retire much earlier than traditional retirement age, typically in your 30s, 40s, or 50s.

Core Principles:

  • 1.High Savings Rate: Save 50-75% of income through frugality and increased earnings
  • 2.Invest Aggressively: Put savings in low-cost index funds for compound growth
  • 3.The 4% Rule: Retire when investments = 25x annual expenses
  • 4.Intentional Living: Focus on what truly brings happiness and value

The 25x Rule

Your FIRE number = Annual expenses × 25

Examples:

  • • $40,000/year expenses = $1 million FIRE number
  • • $60,000/year expenses = $1.5 million FIRE number
  • • $80,000/year expenses = $2 million FIRE number

The 4% Rule

Withdraw 4% of portfolio annually, adjusted for inflation

Safe Withdrawal Rates:

  • • 3% = Very conservative (33x expenses)
  • • 3.5% = Conservative (28.5x expenses)
  • • 4% = Traditional (25x expenses)
  • • 4.5% = Aggressive (22x expenses)

Different FIRE Paths

Lean FIRE ($500k - $1M)

Living on $20,000-40,000/year. Requires significant lifestyle adjustments, minimalism, and geographic arbitrage. Popular with singles and couples without children.

Regular FIRE ($1M - $2.5M)

Living on $40,000-100,000/year. Comfortable middle-class lifestyle without luxury. Can afford occasional travel, hobbies, and moderate spending.

Fat FIRE ($2.5M+)

Living on $100,000+/year. No lifestyle compromises, luxury travel, expensive hobbies, private schools, and high-cost-of-living areas.

Coast FIRE (Variable)

Save aggressively early, then "coast" with part-time work covering expenses while investments grow. Provides work flexibility without full retirement.

Barista FIRE (Variable)

Similar to Coast FIRE but specifically working part-time for health insurance benefits while drawing minimal amounts from investments.

The Power of Savings Rate

Savings RateYears to FIRERequired Income Multiple
10%51 years1.1x current income
25%32 years1.3x current income
50%17 years2x current income
65%10.5 years2.9x current income
75%7 years4x current income

*Assumes 5% real return and 4% withdrawal rate

Frequently Asked Questions

Is the 4% rule still valid?

The 4% rule, based on the Trinity Study, has historically worked for 30-year retirements. For longer retirements (40-50+ years), consider a more conservative 3.5% or even 3% withdrawal rate. Also factor in flexibility to reduce spending during market downturns and the ability to earn income if needed.

What about healthcare before Medicare?

Options include: ACA marketplace plans (with potential subsidies based on income), part-time work for benefits (Barista FIRE), spouse's employer coverage, health sharing ministries, or geographic arbitrage to countries with affordable healthcare. Budget $500-1,500/month per person for US healthcare.

How do I access retirement accounts before 59½?

Several strategies exist: Roth IRA conversion ladder (5-year waiting period), Rule 72(t) SEPP (Substantially Equal Periodic Payments), withdraw Roth IRA contributions (not earnings) anytime, and use taxable investment accounts for the first years of retirement.

What if I get bored in early retirement?

FIRE is about financial independence, not mandatory retirement. Many pursue passion projects, volunteer work, part-time consulting, travel, hobbies, or start businesses without financial pressure. The goal is freedom to choose how you spend your time, not to stop being productive.

FIRE data stack

Datasets powering savings rate, spending, and withdrawal assumptions.

Social Security Administration (SSA)

Benefit estimators, COLA forecasts, and claiming-age reductions used in the income projections.

View source

Bureau of Labor Statistics CPI & medical index

Inflation and healthcare cost assumptions for lean vs. fat FIRE scenarios.

View source

Fidelity & Vanguard retirement benchmarks

Contribution rates, median balances, and catch-up participation data.

View source

Cadence: SSA/IRS annually, CPI monthly, plan benchmarks quarterly.

Important FIRE calculator disclaimer

Examples are educational only and not individualized fiduciary advice.

  • ⚠️Outputs combine your inputs with the datasets above. Validate withdrawal rates, Social Security assumptions, and tax treatment with licensed professionals.
  • ⚠️Market returns, inflation, and healthcare costs change frequently. Re-run the calculator after major life events or policy updates.
  • ⚠️FutureValueCalc is not a fiduciary. Work with a certified planner before locking investment or withdrawal decisions.

Turn FIRE math into weekly actions

Use ROI and reverse calculators to translate withdrawal rates into cash-flow reminders, taxes, and rebalancing tasks.