A CAGR is only meaningful next to a goal, time horizon, and assumptions. Aspire shows the modeled rate needed to reach a goal at these assumptions, not a recommended return or prediction.

Required rate of return calculator

What CAGR do you need to reach a savings goal?

Q: What return do I need to double my money?

Enter your current amount, set the goal amount to twice that value, and choose the number of years. The calculator will show the modeled required CAGR at these assumptions.

Q: How is required return calculated?

The calculator uses Aspire's existing projection engine to compare the future goal cost with the future value of current savings and monthly contributions at the assumptions shown.

Price the goal, make the assumptions visible, and see the modeled return and monthly contribution required at these assumptions. No recommendations, no product advice, no hidden inputs.

Updated May 30, 2026 Source data from committed Aspire rates Educational estimate

Direct answer

What return do I need?

To find the return you need, compare what you have today with the future cost of your goal, then solve for the annualized growth rate over your timeline. This calculator shows the modeled required CAGR and monthly contribution at these assumptions. It is an educational estimate, not advice.

Inputs

Start with a real target.

Defaults are pre-filled so the model is useful before you touch anything. All results update at these assumptions.

Amount today

Current savings or assets you want to model at these assumptions.

Goal amount

Today's stated goal amount before optional personal-inflation adjustment.

Years

Timeline used by the model at these assumptions.

Adjust for my personal inflation

When on, the goal amount grows by the selected sourced cost rate before the required return is estimated.

Modeled result

Required CAGR, not a forecast.

Required CAGR —

Modeled annualized rate at these assumptions.

Required monthly —

Additional monthly contribution if the current amount is modeled at 0% growth at these assumptions.

Future goal cost —

Goal value at these assumptions.

Loading sourced reference band...

Stress-test this in the simulator See methodology

How to read it

One number is not the point.

The useful part is the visible relationship between today, the future goal cost, the years available, and new savings. A lower required CAGR can come from more time, a smaller target, more starting capital, or more monthly contribution. Aspire does not tell you which path to choose.

Rates and dollar amounts are modeled at these assumptions.
Reference rates are historical or sourced context, not a recommendation.
For a fuller basket, use the main Aspire Calculator or stress-test the scenario in the Simulator.
For a quick coverage check, use the on-track checkup. For cost-side assumptions, see Methodology, the future-cost calculator, the home-affordability calculator, or the buying-power calculator.
The calculators hub lists every shipped Aspire calculator.

FAQ

Common CAGR questions

What is a good CAGR?

A CAGR is only meaningful next to a goal, timeline, and assumptions. This page shows the modeled rate needed at these assumptions, not a good or bad return.

What return do I need to double my money?

Enter your current amount, set the goal to twice that value, and choose a timeline. The result is the modeled required CAGR at these assumptions.

How is required return calculated?

The page reuses Aspire's projection engine to compare the future goal cost with projected resources and monthly contributions at these assumptions.