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All Calculators

51 calculators covering the full early retirement journey — from your first savings target to portfolio survival in your 80s. Browse by topic or scroll through all groups.

These tools are self-reflection aids, not clinical instruments. Using this site does not create a therapist-patient relationship or constitute personal advice. Full disclaimer.

FIRE Fundamentals

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Start here. These calculators answer the core questions: what's my number, when can I retire, and am I on track?


FIRE Variations

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Not all FIRE paths look the same. Choose the variation that fits your spending, lifestyle, and timeline — from ultra-frugal Lean FIRE to geographic arbitrage abroad.

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Coast FIRE Calculator

Find out if you've already saved enough to stop contributing and let growth carry you to retirement.

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Lean FIRE Calculator

Calculate your FIRE number for an ultra-frugal retirement under $40,000 per year. See exactly how radical frugality compresses your timeline compared to average spending.

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Chubby FIRE Calculator

Plan a comfortable retirement with $80,000 to $150,000 per year in spending. The sweet spot between lean sacrifice and fat luxury.

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Fat FIRE Calculator

Calculate the nest egg needed for a high-spending retirement of $150,000 or more per year, without compromising your lifestyle.

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Barista FIRE Calculator

See how a small part-time income reduces the portfolio you need to retire. Named after the strategy of working part-time for health benefits while your investments grow.

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Side FIRE Calculator

Calculate your FIRE number when a meaningful side income reduces how much your portfolio needs to cover. Ideal for freelancers, consultants, and online business owners.

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Geo FIRE Calculator

Use geographic arbitrage to retire earlier by choosing a lower cost-of-living country. Select from 50 expat destinations and see how your FIRE number shrinks.

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Flamingo FIRE Calculator

Reach half your FIRE number, then stop contributing and let compounding do the rest. See exactly when your money grows to full financial independence on its own.

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Slow FIRE Calculator

Model a gradual transition to retirement with custom phases: full-time, part-time, and sabbatical years. See how a quality-of-life focused path still reaches FIRE.


Building the Nest Egg

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Tools for the accumulation phase — maximizing contributions, choosing investments, eliminating debt, and finding your investable surplus.

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Monthly Budget Calculator and Savings Rate

Enter your income and expenses by category to find your exact savings rate, investable surplus, and what that amount compounds to over 10, 20, and 30 years toward financial independence.

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401(k) Growth Calculator

Project your 401(k) balance at retirement including employer match, salary growth, and compounding, year by year.

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Catch-Up Contribution Calculator (Ages 50-63)

See exactly how much extra your retirement portfolio reaches by adding $7,500 per year after 50, or $11,250 per year at ages 60-63, with a year-by-year breakdown of what compounding does to those extra contributions.

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Asset Allocation by Age Calculator

Get a suggested stock, bond, and cash allocation for your age and risk profile, with a projected blended return and 20-year portfolio growth estimate.

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Debt Payoff vs. Invest Calculator

Compare paying off debt early against investing the same money, side by side.

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Debt-to-Income Ratio Calculator

Calculate your front-end and back-end debt-to-income ratios, see how you compare to lender thresholds, and find how much of your income is unavailable for investing.

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True Second-Income Calculator

See what a second household income actually nets after marginal federal tax, FICA, state tax, childcare, commuting, and other work costs. Find the real effective hourly rate.

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Emergency Fund Calculator

Calculate how many months of expenses your emergency fund should cover based on employment type, income sources, and dependents — and see exactly how much that is in dollars.

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Rental Property Investment Calculator

Analyze a rental property's income, expenses, cash flow, and cash-on-cash return. Applies the 1% rule, 50% rule, and full expense breakdown to evaluate whether a property is worth buying.


Retirement Income Planning

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Model where the money comes from after work stops — portfolios, pensions, side income, and how long it all lasts.


Social Security

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When to claim, whether to bridge the gap, and how spousal benefits work — the decisions that affect income for life.


Tax & Account Strategy

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Optimize the after-tax value of every retirement dollar — Roth conversions, RMDs, 72(t) early withdrawals, HSA stacking, and bracket management.


Risk & Portfolio Protection

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Stress-test the plan. Inflation, bad return sequences, and longevity are the three forces that quietly wreck retirement portfolios.


Mind & Money — Hybrid Tools

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These tools pair the financial math with a personal readiness reflection. Each produces a recommendation based on both your numbers and your situation.

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Retirement Identity Readiness

Your FIRE number, plus a personal readiness reflection covering identity loss, purpose, and spending discipline.

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Money Dysmorphia Check

Compare your objective financial picture against how you actually feel about money, and find out whether your perception is calibrated, inflated, or holding you back.

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Burnout vs. True FIRE Check

Weighs your career burnout against your genuine desire to stop working entirely, so you can tell whether early retirement is actually the cure, or just a new job in disguise.

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One More Year Syndrome Calculator

Calculate whether working another year meaningfully changes your retirement math, or whether One More Year Syndrome is keeping you working long past when the numbers already said yes.

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De-Accumulation Cash-Flow Trainer

Turns your personal worry threshold into a concrete cash buffer size and a pre-set spending protocol for a market downturn, so there's nothing to decide in the moment.

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Couples FIRE Alignment Calculator

Each partner answers separately across six dimensions, vision, timeline, money, identity, to reveal not just how ready you are, but how aligned you actually are.

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72(t) SEPP Calculator and Readiness Check

Calculate your exact penalty-free 72(t) SEPP payment using all three IRS-approved methods, then check whether your situation is actually ready for the irreversible 5-year commitment.

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Mortgage Payoff vs. Invest Calculator

Decide whether to pay off your mortgage early or invest the difference, weighing the math against the personal value of being debt-free.

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Business Owner Exit-to-Retirement

Model retiring off a business sale or wind-down, with a staged operational transition and delegation timeline.

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Personal Investment Policy Statement Generator

Build a written investment policy statement, your purpose, risk tolerance, target allocation, and rebalancing rules, and download it as a PDF you can actually follow when markets get volatile.