Financial Independence Number (FIN)

This calculator helps you estimate how much capital you need at retirement to sustain your lifestyle, then shows how much you need to save each month to get there. Three calculation methods are available, each with clear assumptions and practical guidance.

Your Information

Current Age

Retirement Age

Life Expectancy

Annual Expenses Today ($)

Expected Inflation (%)

Your Savings Plan

Current Investments ($)

What you already have invested toward retirement.

Expected Annual Return (%)

Nominal return before inflation, compounded monthly.

Calculation Method

🔥 FIRE FIN (4% Rule)

Portfolio remains invested indefinitely; supports a 4% annual withdrawal. Inflation is offset by investment growth.

Best for: Early retirees, legacy planning, infinite horizon.

🎯 Drawdown FIN (Spend to Zero)

Assets gradually decline to $0 at life expectancy while remaining invested.

Best for: Practical retirement, pensions, no legacy goal.

🛡️ Conservative FIN (Cash-Only)

No investment growth; expenses inflated each year to estimate total lifetime cost.

Best for: Stress-testing, worst-case scenarios.

Financial Independence Number (FIN)

fORTHRightMIND