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Compound Interest Calculator

Compound Interest Calculator

Calculate compound interest with a flexible investment calculator that models growth over time, contributions, compounding frequency, and projected returns.

Your starting investment amount.

Your expected annual rate of return, up to 2 decimals (e.g., 8.25).

Number of years you plan to invest (you can use decimals like 7.5).

How often returns are applied. This also controls the contribution cadence shown below.

Controls when contributions are made within each contribution period.

Amount added every month. Enter 0 if you won’t add anything monthly.

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How does it work?

This calculator estimates the potential impact of reinvesting capital gains into a Qualified Opportunity Zone (QOZ) investment.

By combining your input amount with projected deal performance and current capital gains tax rules, it models outcomes over a 10-year horizon. The result is a clear comparison of after-tax returns with and without QOZ benefits, highlighting potential tax deferral and long-term tax elimination on future gains.

1. Enter assumptions

Fill in your starting investment, expected return, time horizon, and contribution details. These inputs define how your investment is modeled over time.

2. View results

Click Calculate Results to see your projected growth, total invested amount, and year-by-year forecast based on your inputs.

3. Get expert guidance

On the results page, you can book a call with our team to review your assumptions, explore different scenarios, or get help with more advanced planning.

Enter your information to download this report by Primior: