v2.0.56 • Updated: August 18, 2025
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Basic Calculator
💰 FIN
$0
📅 Monthly FIN
$0
🎯 Fully Funded
$0
🛡️ IPN
$0
💵 Actual Monthly Income
$0
⚠️ Invalid ages auto-adjusted.
↔️ Expand the Chart

This illustrative calculator is designed to be an informational and educational tool only. This illustration is a hypothetical and does not represent an actual investment. This illustration uses a constant rate, compounded on a monthly basis, unlike actual investments which will fluctuate in value and could be significantly impacted by periods of negative returns. It does not include fees, taxes, expenses, or extra withdrawals before retirement, which if included, would lower results. Monthly withdrawal is at the beginning of the month, inflation applied annually. There is no guarantee you will achieve these results. The historical inflation rate is 3%.

Frequently Asked Questions ▼
What is the FIN (Financial Independence Number)?
The FIN represents the lump sum amount you need at retirement to generate your desired income for life.
Why does the FIN change for different start age?
The FIN changes with start age because the amount you need at retirement depends on how many years you have to save and how inflation impacts the value of your desired income. Starting earlier means your desired income needs to be inflated over a longer period before retirement, which changes the lump sum required.
How is the “Future $” display different from “Today's $”?
“Future $” adjusts your income and savings goals to account for inflation, showing the amount of money you will need in inflated future dollars. “Today's $” shows the equivalent value in today’s dollars, removing the effects of inflation to provide a clearer comparison.
What does “Fully Funded” mean?
“Fully Funded” shows how much you’d need invested today to meet your retirement goals without adding extra monthly contributions.
What is the difference between Life Expectancy and Forever (FIRE style) modes?
Life Expectancy mode plans your finances to last until a set age, while Forever (FIRE) mode plans for perpetual income with no set end date.
How do changes in inflation or investment return rates affect my results?
Inflation and return rates impact how much you need to save and your investment growth, which affects your FIN and funding requirements.
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