How many years until your financial independence?
Plug in your savings rate, annual expenses, and current portfolio. See your FIRE year, run Monte Carlo, and identify the single highest-leverage change you can make today. No login required.
When could you retire?
A quick estimate using a 7% real return and the 4% withdrawal rule. Target spend AED 293,800/yr (FIRE number AED 7,345,000). Then the two numbers a Gulf expat asks next: gratuity and Zakat. No signup needed.
Estimated FIRE year
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Interactive calculator — loading.
FIRE target: AED 7,345,000 (≈ $2,000,000 USD)
Educational estimate only. Actual outcomes depend on returns, inflation, taxes, and spending. Not financial advice.
Check a fund's domicile
Paste a ticker (VTI, VWRA) or an ISIN. We look up the domicile and flag the US-withholding and estate-tax implications for UAE-resident holders.
Reads the domicile from the ISIN’s country prefix — offline, no lookup service. Ticker symbols are not supported; your broker or fund factsheet lists the ISIN. Educational only — verify with your broker before buying.
Why most FIRE calculators are wrong
A 4%-rule spreadsheet gives you one number. The future is a distribution, not a point. We model the whole distribution.
Real Monte Carlo, not static math
10,000-path simulation with sequence-of-returns risk modeling. Static 4%-rule calculators miss this entirely.
Dynamic withdrawal guardrails
Guyton-Klinger-style rules trim spending after bad years and raise it after good ones. Switch between a fixed withdrawal and guardrails to see how the modelled success rate changes for your own inputs. Illustrative, not a guarantee.
Currency-aware for expats
Earn in AED, invest in USD ETFs, retire in INR? We model multi-currency portfolios honestly.
Updates as you save
Enter or CSV-import today; read-only bank feeds (Plaid + Lean) activate once provider approvals complete (Q1 2027).
FIRE calculator FAQ
What is FIRE?
FIRE stands for Financial Independence, Retire Early. It means having enough invested assets that the safe withdrawal from your portfolio covers your annual expenses, so you no longer need active income to sustain your lifestyle.
How is the FIRE number calculated?
The classic FIRE number is 25 times your annual expenses, derived from the 4% safe withdrawal rate. If you spend $40,000 a year, your FIRE number is $1,000,000. Modern adjustments (dynamic withdrawal guardrails, sequence-of-returns risk) refine this.
What savings rate do I need?
Mr. Money Mustache showed that savings rate, not income, is the dominant variable. A 50% savings rate gets you to FIRE in ~17 years. 25% takes 32 years. 75% takes 7. In this model, savings rate is the variable with the largest effect on the timeline.
Is the 4% rule still valid in 2026?
For a 30-year retirement on a US-domiciled portfolio, historical data still supports a ~95% success rate at 4%. For longer horizons (40+ years) or international portfolios with different drawdown profiles, 3.5% is more conservative.
How does K25x improve on a static calculator?
The retirement simulator runs a Monte Carlo simulation of 10,000 market paths against your own numbers, and lets you switch between a fixed withdrawal and Guyton-Klinger-style dynamic guardrails to compare the modelled outcomes. The result is a probability distribution of outcomes, not just a single point estimate. We also model your actual asset allocation, currency exposure, and sequence-of-returns risk.
Do I need to sign up to use the calculator?
No — the calculator on this page works without an account. Sign up only if you want to track progress over time, run Monte Carlo on your own numbers, or (on the Pro and Family plans) get an AI-generated read of them.
Ready to track this for real?
Add your accounts (manual or CSV), set your savings rate, and watch your FIRE year shrink as you contribute. Free forever plan.