Au Bank Savings Account Interest Rate Calculator

Calculate your AU bank savings account interest rate with this free online calculator. Learn how interest rates work and compare different accounts.

How the Interest Rate Calculator Works

This calculator helps you determine the interest earned on your AU bank savings account. It uses the simple interest formula to calculate earnings based on your deposit amount, interest rate, and time period.

Note: This calculator assumes simple interest. For accounts that compound interest, use the compound interest calculator instead.

Key Terms

Principal (P): The initial amount of money deposited into the account.
Interest Rate (r): The annual percentage rate charged by the bank.
Time (t): The number of years the money is invested or deposited.
Simple Interest (I): The interest earned on the principal amount.

How to Use the Calculator

Enter your principal amount in the first field.
Input the annual interest rate offered by your AU bank.
Specify the time period in years.
Click "Calculate" to see your interest earnings.
Review the result and chart showing your interest growth over time.

Simple Interest Formula

I = P × r × t

Where:

I = Interest earned
P = Principal amount
r = Annual interest rate (in decimal)
t = Time in years

The Formula Explained

The simple interest formula calculates earnings based on the principal amount, interest rate, and time. The interest rate is typically expressed as a percentage, so you'll need to convert it to a decimal by dividing by 100 before using it in the formula.

Term	Symbol	Description
Principal	P	The initial amount of money
Interest Rate	r	Annual percentage rate (as decimal)
Time	t	Number of years
Simple Interest	I	Interest earned on principal

Worked Example

Let's calculate the interest earned on $5,000 deposited at 2.5% annual interest for 3 years.

Calculation Steps

Convert the interest rate to decimal: 2.5% = 0.025
Apply the formula: I = 5000 × 0.025 × 3
Calculate: I = 5000 × 0.075 = $375

After 3 years, you would earn $375 in interest on your $5,000 deposit at a 2.5% annual rate.

Frequently Asked Questions

What is the difference between simple and compound interest?: Simple interest is calculated only on the original principal amount, while compound interest is calculated on the principal plus any accumulated interest from previous periods.
How often does AU bank calculate interest?: AU banks typically calculate interest daily, monthly, or annually depending on the account type. This calculator uses annual calculations for simplicity.
Can I use this calculator for other currencies?: Yes, you can use any currency as long as the interest rate is expressed as a percentage of the principal amount.
What if my interest rate changes over time?: This calculator assumes a constant interest rate. For variable rates, you would need to calculate each period separately.
Is the interest I earn taxable?: Interest earnings are generally taxable in Australia. Consult a financial advisor for specific tax implications in your situation.