Interest Calculator

Updated 3 December 2025

Our Interest Calculator Makes The Numbers Clear
Calculate interest payments or interest returns in seconds. Our calculator shows the time value of money and how much interest will be earned or charged on a principal sum at certain interest rate for particular period of time.

Christopher Walsh
MoneyHub Founder

Don't Overpay - Find the Best Personal Loan Rates with MoneyHub - Too Many Borrowers Get Ripped Off with a Personal Loan or Car Finance

Are you tired of overpaying with high interest rates and exorbitant fees? Our research shortlists three outstanding lenders known for their fair rates and reliable service:

Harmoney: Get personalised rates tailored to your financial needs.
Simplify Loans: Specialised car loans that keep your budget on track.
First Credit Union: Enjoy the freedom of no-fee personal loans.

Checking what interest rate you'll get is quick and easy - just a few minutes could save you thousands, given the range of interest rates. Remember

It's the interest rate you agree to now that makes a huge difference when you repay your loan week after week. We believe that signing up for finance with a car salesperson or via a bank is unlikely to be the cheapest option.
Advertising Disclosure: We may earn a commission from loans, but our top picks are always based on rigorous research and your best interest.

Harmoney

Simplify Loans

First Credit Union

Simple Interest Calculator

Your Results

Total interest accrued

$0000.00

Daily interest continues

0000.00 ($) per day

Principal + Interest

$0000.00

Important: Our calculations are based on the assumption that there is no change to the opening or closing balance (the 'amount') during the period ('days') interest is calculated.

Video Explainer
MoneyHub Founder Christopher Walsh explains how to use a simple interest calculator for a term deposit, personal loan or car finance:

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