Variable-Rate Home Loans

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Written by

Kervin Mathew

Last Updated 27/05/2025

What changed?

Moderate rewrite, introduced new infographics and content, repurposed original content, added to FAQs and new CTA
Our aim is to help you make better informed decisions. That’s why iSelect’s content is produced in accordance with our fact-checking and editorial guidelines.

Edited by

Ellie Garran

Reviewed by

Sam Hyman

Find out more about how we make money.

View our Privacy Policy.

We’ve partnered with Aussie, who’ve helped 1.5 million Australians and counting

iSelect Mortgages Pty Ltd is a credit representative (Credit Representative 400540) of Lendi Group Distribution Pty Ltd (Australian Credit Licence 246786). iSelect Mortgages Pty Ltd receives a commission from Lendi Group Distribution Pty Ltd, the licensee for each new customer account created and for each home loan submitted through this service. Learn more.

What is a variable-rate home loan?

A variable-rate home loan comes with an interest rate that is prone to change. There’s plenty that can influence how much interest you pay on your variable-rate home loan. It could be changes in the market or the Reserve Bank of Australia (RBA) hiking the official cash rate.  

Why choose a variable-rate home loan?

Why deal with all the uncertainty? For starters, it tends to start off with a lower interest rate than a fixed-rate home loan. Added to that, a variable-rate home loan could come with a roster of features that you could use to your advantage – more about these as you read on.

What might paying off an interest-only loan look like?

In March 2025, variable interest rates were at 6% and 6.1% for new and outstanding loans respectively.1Reserve Bank of Australia – Lenders’ Interest Rates In May 2025, the official cash rate decreased from 4.1% to 3.85%.2Reserve Bank of Australia – Cash Rate Target

To understand how the cash rate and interest rates work together, it helps to know that: 

  • banks themselves need to borrow from other banks, and the cash rate is the interest rate they pay for this
  • the cash rate can end up influencing the home loan interest rates offered to the end consumer – you
  • banks tend to treat the cash rate as a benchmark and can choose to ignore the recommended cash rate. 

What features can you get with a variable-rate home loan?

With variable-rate home loans, you could access a bunch of extra features that you could use to your advantage.

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Offset account

An offset account reduces the interest you pay on a home loan. If you have, say, $20,000 stowed away in an offset account and your loan balance is $100,000, you only pay interest on $80,000.

Payment flexibility

You can make additional payments on top of your minimum repayments to help pay off your loan early.

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Redraw facility

A redraw facility lets you make extra payments towards your home loan – and then withdraw them later if you need to. 

Repayment holidays

Need some extra cashflow? You might be able to temporarily pause any direct debit home loan repayments.  

How much will a rate increase affect my repayments?

It depends on how much the interest rate increases or decreases. Here’s an example of how a 0.50% variation in the interest rate can impact your monthly repayments and, not to mention, your total outflow.  

Evidently, a change of just 0.5% to your mortgage’s interest rate could have you paying a lot more. Or less, if the interest rate goes down.  

When the incomparable Sinatra sang, ‘You’re riding high in April, shot down in May’, his inspiration may as well have been a variable-rate home loan. That’s because: 

  • interest rate changes are unpredictable. There’s no conclusive way of knowing when interest rates will rise or fall.
  • the RBA’s cash rate has ranged from as low as 0.10% in 2020 to 4.35% in 2024.3Reserve Bank of Australia – Cash Rate Target

Keep an eye out for the media release is issued at 2.30 pm (Sydney time) after each Reserve Bank board meeting.  It will indicate any changes in the cash rate taking effect the next day. 

Interest rate 6.00% per annum 6.5% per annum 
Loan amount $500,000.00 $500,000.00 
Loan term 25 years 25 years 
Monthly repayments $3,222.00 $3,376.00 

Note: This is a general example. This table should not be relied on for your personal situation. 

Variable-rate home loans vs fixed-rate home loans

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Variable-rate home loans 

With a variable-rate home loan, you’ll find that you have more flexibility, but that comes at a cost. Before you decide to go with one, it’s important to weigh up the benefits and downsides.


Pros 

  • Potential to make additional repayments 
  • Easy refinancing at any time 
  • Potential rate decreases 


Cons 

  • Potential rate rises 
  • More difficulty with budgeting 
  • Temptation to overborrow when rates are low 

Fixed-rate home loans 

Fixed home loans lock you into a set interest rate for a certain period of time, giving you certainty about what you’ll pay for in that duration. But that means you’re also stuck with what you have when the grass may grow lusher and greener on the other side.


Pros 

  • Certainty around repayments
  • Protection from interest rate rises
  • Confidence around budgeting and financial planning


Cons  

  • Potentially higher interest rates
  • Penalties for early repayment or refinancing
  • Fewer features and limited flexibility
  • Ignores decreases in cash rate

Will interest rates go down anytime soon?

One of the reasons the official cash rate (OCR) exists is to manage inflation. If inflation is high, the RBA board generally tackles it by hiking the OCR. When inflation decreases, the RBA might decide to loosen the reins on the cash rate. This could influence banks and lenders to lower interest rates on home loans. So, it may be wise to keep a keen ear to the ground when it comes to cash rate movements. 

What factors can affect the interest rates on variable-rate home loans?

Lenders can look at some of these (and more) factors when deciding interest rates. 

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Official cash rate (OCR)

Interest rates offered by bankers and lenders tend to reflect movements in the OCR, which is set by the Reserve Bank. 

Lender funding costs

Lenders have to borrow money too, and their borrowing costs flow on to their lending rates. 

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Loan repayment type

If you go with interest-only repayments, they can feature higher interest rates than a garden variety principal-and-interest home loan.

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Loan-to-value ratio (LVR)

Your LVR is the percentage of a property’s value that you borrow from the lender. A higher LVR typically means a higher interest rate. 

Before you decide on a variable home loan, do a stress test: use a mortgage calculator to increase the current average interest rate by a percentage point or two. Then compare the projected repayment amounts against your budget. This can indicate whether you’re in a decent position to borrow. If you’re already battling a high-interest home loan, you could try refinancing to find one with a lower interest rate. 

Sam Hyman

General Manager – National Sales, Aussie

Frequently asked questions

What are the types of variable-rate home loans?

How do I compare my options to find a suitable loan?

Would a split interest rate be better?

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iSelect is the trading name of iSelect Mortgages Pty Ltd (ABN 86 148 217 181). iSelect Mortgages Pty Ltd is a credit representative (Credit Representative 400540) of Lendi Group Distribution Pty Ltd (Australian Credit Licence 246786). iSelect provides a referral to Lendi Group Pty Ltd, a Credit Representative of Lendi Group Distribution Pty Ltd (Australian Credit License 246786). iSelect Mortgages Pty Ltd receives a commission from Lendi Group Distribution Pty Ltd, the licensee for each new customer account created and for each home loan submitted through this service.