Principal-only formula
$10,000 at 5% compounded annually for 10 years grows to approximately $16,288.95.
Project compound investment growth with flexible compounding, recurring contributions, annual increases, charts, and a yearly schedule.
Compound interest earns growth on both invested principal and interest accumulated in earlier periods. Recurring contributions add new invested capital that can also compound for the remainder of the projection.
This closed form describes principal-only growth. Recurring contributions use CalcRocket’s monthly event simulation.
A = P × (1 + r ÷ n)^(n × t)The selected nominal annual rate is converted to an equivalent monthly growth factor while preserving annual, semiannual, quarterly, monthly, or 365-period daily compounding.
Beginning contributions are deposited before growth for the first month of each selected contribution period. End contributions are deposited after growth at the period boundary. Beginning deposits therefore receive more time to compound.
At each 12-month anniversary, future recurring deposits increase by the entered percentage. A 3% setting models deposits that rise 3% each investment year.
Calculations run month by month, retain full internal precision, and round only for display. This supports monthly terms and differing contribution and compounding frequencies consistently.
$10,000 at 5% compounded annually for 10 years grows to approximately $16,288.95.
Start with $10,000, add $200 at each month’s end, assume 7% nominal annual interest compounded monthly, and project for 10 years from January 1, 2026.
Compound interest earns returns on both the original principal and interest accumulated in earlier periods.
Principal-only growth follows P × (1 + r/n)^(nt). With recurring deposits, CalcRocket simulates monthly events using the selected compounding frequency’s equivalent monthly factor.
At the same nominal annual rate, more frequent compounding usually produces a slightly higher effective return because interest is added sooner.
Simple interest is calculated only on principal. Compound interest also earns returns on previously accumulated interest.
Choose beginning when deposits occur at the start of each contribution period, or end when they occur after that period’s growth. Beginning deposits have more time to earn interest.
They increase invested capital over time, and each contribution can earn compound growth for its remaining investment duration.
It raises the recurring contribution by the entered percentage at each 12-month anniversary, which can model contributions that grow over time.
Real returns change over time and may be affected by market volatility, taxes, fees, inflation, contribution dates, and changing rates.
No. Taxes, investment fees, inflation, and transaction costs are not included.
No. The entered rate is a modeling assumption and the result is not a guarantee of future returns.