Home loan repayments can be structured in different ways, depending on your financial situation and long-term goals. Choosing between principal and interest or interest-only repayments can impact how much interest you pay over the life of the loan, how quickly you build equity, and how manageable your monthly repayments are.
In this guide, we break down how home loan repayments work, including the pros and cons of each repayment type, to help you make the right choice.
What Are Home Loan Repayments?
When you make home loan repayments, the payment typically goes toward two parts:
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Principal – the amount you originally borrowed
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Interest – the cost charged by the lender for borrowing the money
Most home loans in Australia include both, unless you’re on an interest-only loan. In a principal and interest loan, every repayment helps reduce your loan balance while covering the interest. Over time, your interest charges decrease as your loan balance shrinks.
If you’d like to understand the basics of mortgages, you can check out our guide to mortgage structure and terminology.
Principal and Interest Home Loan Repayments
With principal and interest (P&I) repayments, you’re paying down the amount you borrowed and covering interest. Here’s how it works:
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Interest is calculated daily based on your loan balance and charged monthly.
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Repayments may be made weekly, fortnightly, or monthly.
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As the loan principal decreases, you pay less interest (assuming a fixed interest rate).
✅ Benefits of Principal and Interest Repayments
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You build equity faster
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You typically pay less interest overall
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You’ll own your property outright sooner
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Interest rates are often lower than interest-only loans
❌ Downsides of Principal and Interest Repayments
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Monthly repayments are higher than interest-only loans
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Not always suitable for short-term investors seeking tax efficiency
📌 Tip: If you’re trying to pay off your home faster, consider making extra repayments or switching to fortnightly payments. Learn more about reducing your home loan term at MoneySmart.
Interest-Only Home Loan Repayments
In an interest-only loan, your repayments cover only the interest for a set period—commonly the first five years. The principal remains unchanged unless you make extra payments.
Once the interest-only term ends, the loan automatically reverts to principal and interest repayments, which can significantly increase your repayment amount.
✅ Benefits of Interest-Only Repayments
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Lower repayments during the interest-only period
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Can improve short-term cash flow
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May offer tax advantages for investment properties
❌ Downsides of Interest-Only Repayments
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You pay more interest over the life of the loan
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Higher repayments kick in after the interest-only period
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Equity in your property does not increase during the IO period
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Interest rates are usually higher
Which Home Loan Repayment Type Is Right for You?
Choosing between home loan repayment types depends on your financial circumstances and long-term goals.
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Principal and interest loans are ideal for homeowners who want to reduce debt and build equity over time.
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Interest-only loans may suit investors or those needing flexibility during periods of lower income.
Always compare lenders, interest rates, and loan terms before deciding. You can use the ASIC Mortgage Calculator to estimate repayments and interest over time.
We also recommend speaking with a mortgage broker or financial adviser before committing to a home loan structure.
Summary: Making the Best Choice for Your Home Loan Repayments
Both principal and interest and interest-only repayments offer benefits depending on your goals. If you’re looking to build equity and reduce your debt faster, a P&I loan might be the best option. On the other hand, interest-only loans may give you breathing room in the short term—especially if you’re investing or experiencing variable income.
To learn more, check out our comparison of loan types or speak with your lender to see which option aligns with your situation.
