Inheritance Future Value Calculator: Projected Value If Invested
Project what an inheritance could grow to if invested — the figure that frames the trade-off between spending it now and letting it compound for the years ahead.
Adjust the inputs and select Calculate for a full breakdown.
Compare Common Scenarios
How the numbers shift across typical situations for this calculator:
| Scenario | Projected inheritance value | Total growth |
|---|---|---|
| $100k · 7% · 20yr | $386,968.45 | $286,968.45 |
| $50k · 5% · 10yr | $81,444.73 | $31,444.73 |
| $500k · 8% · 30yr | $5,031,328.44 | $4,531,328.44 |
| $25k · 4% · 15yr (conservative) | $45,023.59 | $20,023.59 |
How This Calculator Works
Enter the net inheritance amount, the annual return you expect from an invested portfolio, and the years you'd hold it. The calculator compounds the value annually at that rate and shows the projected future value along with the dollar growth.
The Formula
Future Value of a Lump Sum
PV = present value, r = annual rate, n = number of years
Worked Example
A $100,000 inheritance invested at 7% annually for 20 years projects to roughly $387,000 — $287,000 of growth on top of the original principal. The same $100,000 spent today on lifestyle is gone; held in cash earning 4% it grows to about $219,000. The growth difference is the cost of the spending decision.
Key Insight
Inheritance decisions get framed as 'spend it' vs 'save it' when the more useful framing is 'spend today' vs 'spend it later as more'. A $100,000 inheritance held 20 years at 7% becomes nearly $400,000 — that's a paid-off house, a college fund, an early retirement. Every spending decision compounds against that future amount, not the present one.
Frequently Asked Questions
How is the inheritance future value calculated?
Today's value × (1 + annual return) ^ years. A $100,000 inheritance at 7% for 20 years projects to about $386,968.
What return should I assume?
Long-run US stock market: 7% real (10% nominal less inflation). 60/40 stock/bond portfolio: 5% to 6% real. Conservative bond-heavy portfolio: 2% to 4% real. Use the rate that matches the portfolio you'd actually hold.
Should I include inflation?
Use real (inflation-adjusted) returns for purchasing-power planning, or nominal returns for dollar-amount planning. Most retirement planners default to real returns because what matters is what the money will buy.
What about inheritance tax?
Enter the net amount after any inheritance, estate, or income tax that applies. The figure should reflect cash actually in your hand to invest, not the gross inheritance before tax.
Should I invest or pay down debt?
Pay down high-rate debt first (above 8% APR generally). Below 8%, the expected stock return often beats the after-tax cost of debt over long periods. Mortgages at low rates often justify investing instead of prepaying.
Related Calculators
Data Sources & Benchmarks
This calculator draws on 1 independent, dated source. The starting values for expected annual return are taken from the benchmarks below and refresh whenever the snapshots are updated.
Methodology & Review
Future value compounds today's inheritance annually at a fixed expected return rate. The model assumes a constant rate; real-world returns vary year to year. Inheritance tax and management fees are not modeled — enter the net amount you actually receive after any tax.
Written by Ugo Candido · Last updated May 17, 2026.