Compounding frequency and future balance
Compound interest adds interest to the balance that earns interest in the next period. Compare annual, quarterly, monthly and daily compounding using the same initial deposit, nominal annual rate and duration.
This form does not add regular deposits. For monthly contributions, choose an investment or savings growth tool instead. Returns are assumed constant; tax, fees and inflation are excluded from this balance.
What is this calculator?
Calculate a future balance and interest earned from an initial deposit, annual rate and compounding frequency.
What can you use it for?
Use this tool to compare a financial scenario using the assumptions you control. Calculate a future balance and interest earned from an initial deposit, annual rate and compounding frequency.
How to use it
- Enter starting amount.
- Enter annual rate (%).
- Enter years.
- Enter compounding per year.
- Select Calculate (or Generate for random tools).
- Read the answer and any additional results below the form. Check the units and the limits of the method.
Formula and method
Each compounding period adds interest to the balance used in the next period.
Worked example
Starting amount: 100000, Annual rate (%): 8, Years: 10, Compounding per year: 12. The result is 221,964.02345447 (future balance).
Assumptions and limits
This is a mathematical estimate using the values you enter. Confirm real product terms, fees, tax rules and dates before acting on it.
Frequently asked questions
What does compounding frequency mean?
It is the number of times interest is added to the balance each year. More frequent compounding changes the effective growth for the same nominal annual rate.
Does this include regular contributions?
This form grows the initial principal using the entered rate, frequency and duration. Use the investment or savings contribution tools when modelling repeated deposits.
What inputs does the Compound Interest Calculator need?
Use starting amount, annual rate (%), years, compounding per year. Read the answer and any additional results below the form. Check the units and the limits of the method.
What assumptions apply to the Compound Interest Calculator?
This is a mathematical estimate using the values you enter. Confirm real product terms, fees, tax rules and dates before acting on it.