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Generational Wealth Calculator

Project long-term wealth accumulation through compound investment returns, showing both nominal and inflation-adjusted future values for multi-generational financial planning.

Current total investable net worth or starting portfolio value.
Amount added to investments each year (e.g. $1,000/month = $12,000/year).
Expected nominal annual investment return (%). S&P 500 inflation-adjusted historical average ~7%; nominal ~10%.
Number of years until retirement or wealth transfer to the next generation.
Expected annual inflation rate (%). US long-run average ~3%.

Results

Nominal Future Value$1,894,755
Inflation-Adjusted (Real) Future Value$973,685
Years to Double (Rule of 72)10.3 years to double (Rule of 72)

📖What is it?

Generational wealth is built through the power of compound interest over long time horizons. This calculator projects both the nominal (face-value) and inflation-adjusted real purchasing power of your investments at the end of the growth period, illustrating how consistent contributions dramatically amplify long-term outcomes.

🎯How to use

Enter your current investable net worth, annual contribution amount, expected annual return rate, the number of years until you plan to retire or transfer wealth, and the expected inflation rate. The calculator shows both the raw future value and what that money is actually worth in today's dollars.

💡Example scenario

Starting with $100,000, contributing $12,000/year at 7% return over 30 years: nominal FV ≈ $2,018,000. At 3% inflation, the real return is (1.07/1.03) − 1 ≈ 3.88%. Real FV ≈ $980,000 in today's dollars — still nearly 10x the starting capital. The Rule of 72 says this portfolio doubles every 72/7 ≈ 10.3 years.

🏆Pro tip

The earlier you start, the more dramatic the compounding effect — a 25-year-old starting at $0 with $500/month at 7% has ~$1.2M by age 65, while a 35-year-old starting the same way has only ~$566,000. Estate planning tools like irrevocable trusts, 529 plans, and Roth IRAs can shelter compounding gains from estate taxes. The generational wealth gap is substantially driven by the gap in years of compounding, not just initial capital.