Bank Interest Calculator " Compound & Simple Interest

Q: What is the difference between simple and compound interest?

Simple interest is calculated only on principal. Compound interest is calculated on principal and accumulated interest.

Q: Why does compounding frequency matter?

More frequent compounding means you earn interest on your interest sooner, resulting in higher returns.

Q: Are bank interest rates fixed or variable?

Fixed deposits have fixed rates. Savings accounts usually have variable rates tied to central bank policies.

What is a Bank Interest Calculator?

A bank interest calculator helps you compute the interest earned on your savings deposits or the interest you owe on a loan. It supports both simple interest and compound interest formulas, making it perfect for savings accounts, fixed deposits (FD), and recurring deposits (RD).

Interest Formulas

Simple Interest: A = P(1 + rt)

Compound Interest: A = P(1 + r/n)^nt

P: Principal amount (initial deposit)
r: Annual interest rate (decimal)
n: Number of times interest is compounded per year
t: Time in years
A: Total accrued amount (principal + interest)

How to Use

Enter Principal: The initial amount deposited or borrowed.
Enter Interest Rate: The annual percentage yield (APY) offered by the bank.
Select Tenure: The duration of the deposit in months or years.
Select Compounding Frequency: Monthly, quarterly, half-yearly, or annually.

Example: $10,000 at 5% for 3 Years (Compounded Annually)

Interest Earned: $1,576.25
Total Value: $11,576.25

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Frequently Asked Questions

What is the difference between simple and compound interest?

Simple interest is calculated only on the principal amount. Compound interest is calculated on the principal AND the accumulated interest of previous periods, resulting in faster exponential growth.

Why does compounding frequency matter?

The more frequently interest is compounded (e.g., daily vs annually), the more money you earn. This is because the interest added to your balance starts earning its own interest sooner.

Are bank interest rates fixed or variable?

Fixed deposits generally have a fixed interest rate for the entire tenure. Savings accounts and variable-rate loans have rates that fluctuate based on the central bank's base rate.