Compounding Comparison Calculator

Your shared starting point

Three scenarios, independent assumptions

Each scenario’s allocations must total exactly 100%. Returns are illustrative, not forecasts or guarantees.

Compare growth over time

Colored lines show total portfolio value for each scenario. The dashed gray line shows only initial savings and deposits, excluding growth. The horizontal axis shows your age. The shaded area shows the 20 years after retirement: no new contributions. At each month-end, your monthly spending is taken from the portfolio, from each asset in proportion to its value. Each asset keeps its annual return.

Year-by-year details

All amounts are in $. Rows below the dark line are after retirement: no new contributions. Withdrawn and Growth are totals since the start.

Settings

Past returns

Compare your annual return rates with the real past average return of each asset, or with today’s yield for bonds and cash. Choose the rates, select the assets and scenarios to update, then apply.

Rates from
Apply to
Asset Past average per year Scenario 1 Scenario 2 Scenario 3

Each scenario column shows: your current rate → the new rate. The colored number is the difference, in percentage points.