Compound Interest Calculator
Compound Interest Calculator Get a Clear Growth Estimate
This compound interest calculator estimates how much interest your savings could earn over time, and how that changes depending on how often the interest compounds. Enter your deposit amount, interest rate, and saving term, and it returns the total interest earned and yield rate under three compounding frequencies, annually, monthly, and daily.
Compounding frequency matters more than most people expect, since more frequent compounding means interest starts earning its own interest sooner. Output is an estimate based on your inputs and a constant interest rate, not a guaranteed return.
Why Compounding Frequency Changes the Result
Interest compounded annually only calculates once a year, so your balance sits still between calculations. Interest compounded monthly or daily recalculates far more often, and each calculation adds to the balance that the next calculation is based on. Over the same deposit, rate, and term, this pushes the effective yield rate above the stated interest rate, and the gap grows as compounding becomes more frequent.
On a $100,000 deposit at 6 percent over 24 months, annual compounding delivers a 6.00 percent yield, monthly compounding lifts that to roughly 6.17 percent, and daily compounding edges it higher again to around 6.18 percent. The dollar difference between annual and daily compounding on the same deposit and term can run into hundreds of dollars, which is why the compounding method is worth checking, not just the headline rate.
How to Use the Calculator
Three inputs are enough to see the comparison clearly:
Deposit amount. The lump sum you’re starting with
Interest rate. The annual rate you expect to earn
Saving term. How long you plan to leave the deposit in place, in months
The compound interest calculator returns total interest and yield rate for annual, monthly, and daily compounding side by side, along with a chart showing how the balance builds under each method over the term. Run it with different terms to see how the gap between compounding frequencies widens the longer the money is left in place.
How ADA Financial Services Helps
A compound interest calculator shows you the growth potential of a deposit on its own. A broker looks at where that deposit fits into your broader plan, whether that’s a home loan deposit, an offset balance, or a savings goal running alongside other financial commitments.
ADA Financial Services helps borrowers work out how their savings and deposit timeline fit into a home loan strategy, including whether funds are better placed in a savings account, an offset account, or directed toward a faster deposit. Our fee is paid by the lender at settlement in most standard cases, disclosed in writing before any application proceeds. We’re based on the Sunshine Coast and work with borrowers across Northern Australia.
Want to know how your savings could grow before you commit to a plan?
Speak with an ADA Financial Services specialist about your savings and home loan strategy. We look at your full position and give you a clear, honest picture of what fits your timeline.
This is general information only and does not constitute financial or credit advice. Speak to a licensed broker for advice tailored to your situation.
FAQs
Why does daily compounding earn more than annual compounding at the same rate?
Daily compounding recalculates interest far more often, so each day’s interest starts earning its own interest almost immediately. Annual compounding only recalculates once a year, so the balance sits still for longer between calculations.
What is the difference between interest rate and yield rate?
The interest rate is the stated annual rate. The yield rate is the actual return once compounding is factored in, which is usually slightly higher than the stated rate, especially with monthly or daily compounding.
Does a longer saving term make compounding more valuable?
Yes. The gap between compounding frequencies widens the longer the deposit is left in place, since there are more compounding cycles for the effect to build on.
Is this calculator relevant if I'm saving for a home loan deposit?
Yes. It helps you compare how different savings products or account types could grow your deposit over your expected saving timeframe, which is useful context before speaking with a broker about your borrowing position.
What This Loan Repayment Calculator Shows
This loan repayment calculator estimates what you will pay each month on a home loan, how much of that payment goes to interest versus principal, and the total interest charged across the full term. You enter your loan amount, interest rate, term, and repayment frequency. The output gives you a clean repayment figure to plan around and a total cost number that most borrowers underestimate.
The estimate is based on the inputs you provide and assumes a standard principal and interest loan with a constant interest rate. Real loans vary as rates move and fees apply. Treat the output as a planning figure, not a loan offer.
What This Loan Repayment Calculator Shows
This loan repayment calculator estimates what you will pay each month on a home loan, how much of that payment goes to interest versus principal, and the total interest charged across the full term. You enter your loan amount, interest rate, term, and repayment frequency. The output gives you a clean repayment figure to plan around and a total cost number that most borrowers underestimate.
The estimate is based on the inputs you provide and assumes a standard principal and interest loan with a constant interest rate. Real loans vary as rates move and fees apply. Treat the output as a planning figure, not a loan offer.