Free Borrowing Power Calculator
See how small extra repayments add up over the life of your loan
Enter your current loan details and an extra repayment amount to see how much time and interest you could save.
With 23+ years in financial services, I help clients build a repayment strategy that actually fits their cash flow, not just a one-off calculation.
Prefer to talk first? Call Durand direct on 0450 275 656
Run your numbers
Enter your loan amount, rate, term and a regular extra repayment to see the estimated time and interest saved. It takes less than a minute.
This estimate assumes your extra repayments continue consistently for the life of the loan and doesn’t account for redraw restrictions some lenders apply.
What actually determines your interest savings
Three moving parts sit behind every extra repayments figure. Understanding them helps you read the calculator’s result the right way.
Size of the extra repayment
Even a modest, consistent extra amount compounds meaningfully over a 25 or 30-year loan term.
How early you start
Extra repayments made earlier in your loan term generally save more interest than the same amount made later on.
Your remaining loan term
The longer your remaining term, the more time your extra repayments have to reduce the total interest charged.
Redraw and offset rules
Some loans limit how easily you can access extra repayments later, which is worth knowing before you commit funds.
Size of the extra repayment
Even a modest, consistent extra amount compounds meaningfully over a 25 or 30-year loan term.
How early you start
Extra repayments made earlier in your loan term generally save more interest than the same amount made later on.
Your remaining loan term
The longer your remaining term, the more time your extra repayments have to reduce the total interest charged.
Redraw and offset rules
Some loans limit how easily you can access extra repayments later, which is worth knowing before you commit funds.
Why your real savings can differ from the estimate
A calculator assumes consistent extra repayments for the full loan term. Real life is rarely that tidy.
Consistency matters more than the amount
An extra repayment made occasionally saves far less than the same amount paid consistently, since the benefit compounds over time.
Some loans cap extra repayments
Fixed rate loans often limit how much extra you can pay each year without triggering a fee, which can catch borrowers out.
An offset account can achieve a similar result differently
Rather than paying extra directly onto the loan, keeping funds in an offset account can achieve a similar interest saving while keeping the money accessible.
Your broader strategy matters
Whether extra repayments make more sense than investing elsewhere, or paying down other debt first, depends on your full financial picture.
Consistency matters more than the amount
An extra repayment made occasionally saves far less than the same amount paid consistently, since the benefit compounds over time.
Some loans cap extra repayments
Fixed rate loans often limit how much extra you can pay each year without triggering a fee, which can catch borrowers out.
An offset account can achieve a similar result differently
Rather than paying extra directly onto the loan, keeping funds in an offset account can achieve a similar interest saving while keeping the money accessible.
Your broader strategy matters
Whether extra repayments make more sense than investing elsewhere, or paying down other debt first, depends on your full financial picture.
From estimate to strategy in five steps
Once you’ve run the numbers, here’s what working with Durand actually looks like.
Why clients work with me
The calculators are free for anyone to use. What sets the outcome apart is the strategy built around your actual numbers, delivered by the same person from start to finish.
“Durand was amazing, he walked us through the process every step of the way, always available to explain things, prepared very thorough loan applications, professional, friendly with great communication skills.”
Shane, verified Google review
23+
Years in financial services
70+
Lenders on panel
5★
Client feedback
1:1
End-to-end service, no handoffs
Extra repayments calculator FAQs
How are my interest savings calculated?
By comparing the total interest paid over your loan term with and without the extra repayment amount you enter, assuming it’s paid consistently.
Does making extra repayments cost me anything?
On most variable rate loans, no. Fixed rate loans often cap extra repayments at a certain amount per year before a fee applies, so it’s worth checking your specific loan terms.
What's the difference between extra repayments and an offset account?
Extra repayments go directly onto your loan balance and reduce it permanently. An offset account keeps your funds accessible while still reducing the interest charged, which suits some situations better than others.
Can I redraw extra repayments if I need the money later?
Many loans allow this through a redraw facility, but rules vary by lender and loan type, so it’s worth confirming before you rely on it.
Is it better to pay extra weekly, fortnightly or as a lump sum?
Regular smaller amounts generally compound in a similar way to lump sums of the same total value, so the right approach often comes down to what fits your cash flow best.
I've run the numbers, what's next?
A conversation about whether extra repayments, an offset account, or a different loan structure altogether makes the most sense for your goals.
Related reading
Once you’ve run your numbers, these might be useful next.
11 strategies to help pay off your mortgage sooner
More practical ways to reduce your loan term and total interest, beyond what this calculator shows.
Offset vs redraw
A closer look at two different ways to reduce the interest you pay, so you can see which suits your situation.
11 strategies to help pay off your mortgage sooner
More practical ways to reduce your loan term and total interest, beyond what this calculator shows.
Offset vs redraw
A closer look at two different ways to reduce the interest you pay, so you can see which suits your situation.
Explore our other calculators
This is one of six free tools. Here are the other five.
Loan repayment
Borrowing power
Stamp duty calculator
Refinance calculator
Home loan offset calculator
Loan repayment
Borrowing power
Stamp duty calculator
Refinance calculator
Home loan offset calculator
Ready to turn your estimate into a strategy?
Tell us what you’re working toward and we’ll review your actual numbers, not just a calculator estimate.
Prefer to talk now? Call 0450 275 656 or email durand@willowandreedprivate.com.au