Credit Card Repayment & Saving Calculator

High-interest credit card debt is the #1 hurdle to home loan approval. Use our calculator to see how quickly you can clear your balance or how much cash flow you could unlock by rolling your debt into your mortgage.

Credit Card Repayment Calculator

Credit card calculator

Your card
Amount owing: ($) ? The current outstanding balance on your credit card.
Interest rate: (%) ? The annual purchase interest rate on your credit card.
Results
$150,000 $100,000 $50,000 $0
Interest
$73,846
Principal
$50,000
Interest
$9,024
Principal
$50,000
Minimum repayments
you'd pay $123,846
over 36 years 1 month
$1,250 first month
(decreasing) ? With minimum repayments your payment decreases each month as your balance falls, meaning you pay more interest overall.
Higher repayments
you'd pay $59,024
over 2 years
$2,459 each month
Save $64,823 by making higher repayments
Higher repayments

See how much you'll save by making a higher repayment.

Higher repayment: (per month) ? A set dollar amount, equal to or higher than your current repayment, that will result in your credit card being repaid faster.
Advanced settings

Note: Your minimum monthly repayment amount is calculated as a percentage of your closing balance, or a minimum dollar amount of your closing balance — whichever is higher. Check your PDS and change these amounts if your lender's amounts are different from these defaults.

Minimum repayment of outstanding balance (%): ? The minimum monthly repayment is usually a percentage of the closing balance. Check your credit card statement.
Minimum repayment ($): ? If your calculated minimum repayment is less than this amount, you will need to pay the lessor of this amount or the closing balance.

What is ‘Debt-to-Income’ & Why Does it Matter?

When applying for a home loan, banks don’t just look at your savings; they look at your “borrowing capacity.” Every $1,000 of credit card limit you have, even if the balance is zero, can reduce your borrowing power by up to $5,000.

The Power of Consolidation

By using a “Mortgage Top-Up,” you can move high-interest (20%+) credit card debt into your low-interest home loan. This immediately increases your monthly cash flow and helps you pay off the debt faster.

How Our Credit Card Calculator Helps

See exactly how much your credit card limit is holding back your home loan dreams. We show you the “hidden” cost of that plastic in your wallet.

What to watch for with credit card consolidation

  • Total Interest Paid: Moving short-term debt to a 30-year mortgage can cost more in the long run unless you maintain higher repayments.

  • Credit Score: Before applying for any home loans, check your credit report to ensure it doesn’t show any active loans or credit cards when they’re closed. Madd loans will handle this for you before any application is submitted. 

  • LVR Limits: Ensure your home has enough equity to allow for a “top-up” without triggering Lenders Mortgage Insurance (LMI).

  • Discipline: Consolidating only works if you don’t run the credit card balances back up again!

Find the best rates & flexible options with our lender network.

Credit Card Calculator FAQS

Let’s dive into the commonly asked questions about credit card debt. 

Lenders assess you based on the limit of the card, not the balance. A $10k limit is treated as a $10k debt, even if you owe $0.

Often, paying off a high-interest card yields a better “return” for your borrowing capacity than adding that same amount to a deposit.

 

However, It’s best to let us conduct an analysis on what is the faster way to get to you to your goal of home ownership (free of charge). 

It’s when you borrow slightly more against your home’s current value to pay out other debts, effectively turning 20% interest debt into ~6% interest debt.

Once a card is closed and a “letter of closure” is issued, the impact on your borrowing power is almost immediate.

Want a Strategy to Become Debt-Free Faster?

Don't just guess your way through debt. Our team specialises in "Mortgage Strategy"—helping you structure your debt to maximise your lifestyle and your wealth. Let's look at your numbers together.
George Samios
Founder/ Mortgage Broker
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