A curated list of calculators, tools, and resources for Financial Independence and Early Retirement planning.
Whether you're targeting Coast FIRE, Barista FIRE, Lean FIRE, or traditional FIRE, this list has the tools to help you plan your path to freedom.
Maintained by UngrindFi — Free FIRE calculators that handle real-life complexity.
- FIRE Calculators
- Coast FIRE Tools
- Barista FIRE Tools
- Safe Withdrawal Rate
- Early Withdrawal & 72t SEPP
- Monte Carlo Simulators
- Spreadsheets & Templates
- Communities
- Educational Resources
- UngrindFi FIRE Calculator - Free calculators for Coast FIRE, Barista FIRE, Lean FIRE, and more. Handles pensions, variable income phases, and one-time expenses.
- Engaging Data FIRE Calculator - Powerful simulator with historical cycle analysis and "Rich, Broke, or Dead" visualizations.
- FIRECalc - Classic Monte Carlo simulator using historical market data back to 1871.
- cFIREsim - Open-source simulator with detailed spending models and Social Security integration.
- Networthify - Clean, simple time-to-FIRE calculator.
- Playing With FIRE Calculator - Based on the documentary; beginner-friendly.
Coast FIRE = the point where you've saved enough that compound growth alone will fund traditional retirement, even if you stop contributing.
- UngrindFi Coast FIRE Calculator - Visual timeline showing contribution vs. coasting phases. Supports pension income.
- WalletBurst Coast FIRE - Clean interface, instant chart updates.
- CoastFIRECalc.com - Single-purpose exact-match domain tool.
- Marriage Kids and Money - Wizard-style inputs with video explainers.
| Age | Required Savings (7% real return, $40k/yr spending, retire at 65) |
|---|---|
| 25 | ~$150,000 |
| 30 | ~$210,000 |
| 35 | ~$295,000 |
| 40 | ~$415,000 |
| 45 | ~$580,000 |
Assumes 4% safe withdrawal rate. Use a calculator for your specific numbers.
Barista FIRE = semi-retirement with part-time income covering some expenses, reducing the portfolio needed.
- UngrindFi Barista FIRE Calculator - Shows the "gap" between expenses and side income that your portfolio must cover.
- Money Flamingo Barista FIRE - Includes the "Flamingo FI" variant concept.
- WalletBurst Barista FIRE - Visual gap analysis.
In the US, a major reason for "Barista" jobs (Starbucks, Costco, etc.) is employer-sponsored health insurance. This can reduce your required nest egg by $8,000-$15,000/year depending on family size and location.
How much can you safely withdraw each year without running out of money?
- FICalc - Modern interface with multiple withdrawal strategies (constant dollar, percent of portfolio, VPW).
- Early Retirement Now SWR Series - The definitive 50+ part research series on safe withdrawal rates.
| Strategy | Typical Rate | Best For |
|---|---|---|
| Traditional 4% Rule | 4.0% | 30-year retirements |
| Perpetual Withdrawal | 3.0-3.5% | 40+ year retirements, legacy goals |
| Variable Percentage | 4-5% | Flexible spenders willing to adjust |
Accessing retirement accounts before 59½ without the 10% penalty.
Section 72(t) allows penalty-free withdrawals via Substantially Equal Periodic Payments.
- UngrindFi 72t Calculator - Compares all three IRS methods: RMD, Fixed Amortization, Fixed Annuitization.
- 72t.net - The original 72t resource, comprehensive but dated UI.
- Corebridge Financial 72t Calculator - Clean institutional tool.
| Method | Withdrawal Amount | Flexibility |
|---|---|---|
| Required Minimum Distribution | Lowest | Recalculates annually |
| Fixed Amortization | Highest | Fixed for 5+ years |
| Fixed Annuitization | Middle | Fixed for 5+ years |
Warning: 72t plans must continue for 5 years OR until age 59½ (whichever is longer). Breaking the plan triggers retroactive penalties.
- Rule of 55 - Penalty-free 401k withdrawals if you leave your employer at 55+
- Roth Conversion Ladder - Convert traditional to Roth, wait 5 years, withdraw contributions penalty-free
- SEPP + Roth Ladder Combo - Bridge the 5-year Roth seasoning period with 72t
Test your plan against thousands of possible market scenarios.
- Portfolio Visualizer Monte Carlo - Professional-grade with asset class correlation modeling.
- Engaging Data Rich/Broke/Dead - Unique visualization showing probability outcomes by age.
- FIRECalc - Tests against every historical 30-year period since 1871.
- Mad Fientist FI Spreadsheet - Comprehensive tracking with Coast FI calculations.
- r/financialindependence Spreadsheet - Community-maintained templates.
- Vertex42 Retirement Calculator - Detailed Excel model with Social Security.
- The 5 Types of FIRE - Visual guide comparing Lean, Coast, Barista, Regular, and Fat FIRE
- r/financialindependence - 2M+ members, the main FIRE hub
- r/coastFIRE - Dedicated Coast FIRE community
- r/leanfire - Minimalist FIRE (<$40k/yr spending)
- r/ChubbyFIRE - Middle ground ($100-200k/yr)
- r/fatFIRE - High-spend FIRE ($200k+/yr)
- r/Fire - General FIRE discussion
- Mr. Money Mustache Forum - OG FIRE community
- Bogleheads - Index investing focus
- Early Retirement Extreme - Philosophical, minimalist approach
- Your Money or Your Life - Vicki Robin (The original FIRE book)
- The Simple Path to Wealth - JL Collins (Stock market investing for FIRE)
- Die With Zero - Bill Perkins (Optimizing spending across your lifetime)
- Early Retirement Extreme - Jacob Lund Fisker (Minimalist philosophy)
- Mr. Money Mustache - The blog that popularized FIRE
- Mad Fientist - Tax optimization strategies
- Early Retirement Now - Deep quantitative analysis
- The Fioneers - Work optional lifestyle design
- Go Curry Cracker - International early retirement
- Barista FIRE Explained - Deep dive into the math behind semi-retirement
- Coast FIRE Explained - The math behind "stop saving, keep growing"
- Lean FIRE Explained - Retire on $25k/year with geographic arbitrage
- 72(t) SEPP Guide - Access your IRA before 59½ without penalty
- ChooseFI - Weekly FIRE discussions
- Afford Anything - Paula Pant on building wealth
- Mad Fientist Podcast - Deep dives with FIRE community members
| FIRE Type | Annual Spending | Required Portfolio (4% Rule) |
|---|---|---|
| Lean FIRE | $20-40k | $500k - $1M |
| Regular FIRE | $40-60k | $1M - $1.5M |
| Chubby FIRE | $60-100k | $1.5M - $2.5M |
| Fat FIRE | $100-200k | $2.5M - $5M |
| Obese FIRE | $200k+ | $5M+ |
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