Rolling Returns Calculator

Calculate rolling returns growth rates, investment yields, and portfolio returns with ease.

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Investment Inputs

Enter principal, interest rate, or time horizon.

Initial Principal ($)

Annual Interest Rate (%)

$19,671.51 +$9,671.51 Total Interest Earned

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The Rule of 72 estimates how quickly an investment doubles: divide 72 by the annual return rate (72 / 7% = approx 10.2 years).

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A = P × (1 + r / n)^(n × t)

Applies financial mathematics compound interest models and time value of money (TVM) equations.

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Past return rates do not guarantee future stock market or bond performance. Tax and inflation impact results.

Follow these simple steps for wealth management planning:

Enter starting deposit amount and optional recurring monthly contributions.

Input expected annual return rate (%) and select monthly or annual compounding.

Instantly view total portfolio future value, principal contributions, and total accumulated interest.

Compound growth is one of the most powerful wealth-building mechanisms in personal financial planning.

Input

Initial investment deposit and annual percentage rate.

Output

Total accumulated balance and net interest gain.

How does compounding frequency affect total return?

More frequent compounding (e.g. daily or monthly vs annually) generates interest on interest sooner, yielding higher total return over long horizons.

What is the difference between APR and APY?

APR (Annual Percentage Rate) does not account for compounding, while APY (Annual Percentage Yield) includes the effect of intra-year compounding.