Inheritance Invested vs Spent Calculator

Inheritance invested vs spent calculator quantifies the long-term financial impact of inherited wealth decisions. 100k inheritance invested at 7% over 20 years = 386,968 vs 100k spent today (0 future value). Massive long-term difference. Of course, immediate use can have life-changing value too - debt payoff, home purchase, family experiences.

Example: 100,000 inheritance. Option A: invest at 7% for 20 years = 386,968 future value (287k gain). Option B: spend on home renovation, holidays, debt payoff. Future value: 0 from spending but possibly 20-50k from satisfaction/utility (subjective). Investment wins financially but spending may win on life value.

Inheritance decision framework: (1) High-interest debt? Pay off first (15-25% return is hard to beat). (2) Emergency fund weak? Build 3-6 months expenses. (3) Mortgage? Consider partial paydown (4-7% fixed return). (4) Retirement on track? Invest difference. (5) Children/grandchildren? tax-advantaged education savings account/junior tax-advantaged account contributions. (6) Charitable inclination? Strategic giving with tax benefits. Most beneficiaries spend 50%+ inherited within 2 years - significant wealth destruction. Plan deliberately, sleep on big decisions.

A worked example

Try the defaults: inheritance amount of 100,000, expected annual return of 7%, investment period of 20 years, alternative use subjective value of 30,000. The tool returns 386,968.45. You can adjust any input and the result updates as you type — no submit button, no reload. That's the real power here: seeing how sensitive the output is to one or two assumptions.

What moves the number most

The result responds to Inheritance Amount, Expected Annual Return %, Investment Period, and Alternative Use Subjective Value. The rate and the time horizon usually dominate — compounding means a small change in either reshapes the final figure more than a similar shift in contribution size. Test this by doubling one input at a time.

The formula behind this

Future value of inheritance compounded at expected return rate. Everything the calculator does is shown in the formula box below, so you can check the math against your own spreadsheet if you want.

Where this fits in planning

This is a "what-if" tool, not a forecast. Use it to test ideas before committing: what happens if the rate is 2% lower than hoped, what happens if you add five more years. The value is in the scenarios you run, not the single answer you get from the defaults.

What this doesn't capture

Steady-rate math ignores real-world volatility. Actual returns are lumpy; sequence-of-returns risk matters most in drawdown; fees and taxes drag on compound growth; and behaviour changes in drawdowns can reduce outcomes below the projection. The number represents one scenario rather than a forecast.