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How interest rate changes affect your home loan

Understanding how the Reserve Bank of Australia (RBA) cash rate impacts your home loan rate and repayments can help you plan ahead.

Key takeaways

  • Variable rates usually change when the RBA adjusts the cash rate.
  • Fixed rates stay the same until your fixed term ends.
  • Repayment changes typically take 20 to 30 days, or up to 60 days with some lenders.

What is the RBA interest rate decision?

The Reserve Bank of Australia (RBA) interest rate decision is a monthly meeting (excluding January) where the Reserve Bank Board sets the official cash rate target. This rate is the main tool the RBA uses to manage the Australian economy.

When is the next RBA interest rate decision?

The RBA Board meets on the first Monday and Tuesday of February, March, May, June, August, September, November and December. Following the meeting, the RBA announces whether the cash rate will rise, fall or stay on hold.

Why do interest rates change?

The Reserve Bank of Australia raises rates to slow down spending and cool inflation. The idea is that if interest rates go up, people and businesses become more reluctant to borrow and spend. This reduces demand in the economy and inflation slows.

On the other hand, if the economy needs a boost, the RBA typically cuts rates to encourage spending and investment. If the economy is steady, they may leave rates on hold.

Will interest rates go down?

Predicting when interest rates will go down isn't easy – it depends on factors like inflation and employment data. Economists keep a close eye on RBA announcements for any hints. A rate cut is more likely when inflation falls within the RBA's target range.

How your loan type affects you

While the RBA sets the cash rate, banks decide independently whether to pass these changes on to customers.

Variable rate home loans

If you have a variable rate home loan, your interest rate may move with the cash rate.

  • If the cash rate rises: Lenders generally pass this on to borrowers, increasing your rate and interest charges.
  • If the cash rate falls: Lenders may lower variable rates, which reduces your interest charges.

Fixed rate home loans

With a fixed-rate loan, your interest rate and home loan repayments stay the same for the fixed term, regardless of what the RBA does. This offers certainty for your family budget. When the term ends, the loan usually reverts to a standard variable rate (SVR), which may vary from your fixed rate. Check with your lender for details.

When will my repayments change?

If you're on a variable rate, changes to your repayments don't happen instantly. 

Here's the typical timeline:

  1. Announcement: The RBA announces the decision on a Tuesday.
  2. Lender review: Your bank reviews the decision and sets new rates.
  3. Notification: You receive notice of your new rate and repayment amount.
  4. Rate effective date: The new rate applies and your daily interest adjusts immediately.
  5. Repayment effective date: Repayment changes usually take effect in 20–30 days, though some lenders may take up to 60. You'll be notified before your new repayment amount is due.

How much will my mortgage repayments be if interest rates rise?

Small percentage changes can add up over the life of a loan. This table shows the estimated additional monthly cost for 3 common loan sizes if interest rates rise.

Rate change vs repayment
Loan amount +0.25% rate hike +0.50% rate hike
$500,000 +$75 per month +$150 per month
$750,000 +$113 per month +$225 per month
$1 million +$150 per month +$300 per month
Rate change vs repayment
Loan amount $500,000 $500,000
+0.25% rate hike +$75 per month +$75 per month
+0.50% rate hike +$150 per month +$150 per month
Loan amount $750,000 $750,000
+0.25% rate hike +$113 per month +$113 per month
+0.50% rate hike +$225 per month +$225 per month
Loan amount $1 million $1 million
+0.25% rate hike +$150 per month +$150 per month
+0.50% rate hike +$300 per month +$300 per month

This table is an example based on 30-year principal and interest repayments and does not show current interest rates. Check with your lender for rates related to your loan.

Is your rate going up or down? Explore how different scenarios could impact you with our Home Loan Repayment Calculator. Product features, rates and eligibility criteria are subject to change. Please check with HSBC for the latest information.

What to do if repayments rise

If you're worried about rising costs, you have options to manage the impact on your budget.

  1. Check your rate

    Make sure you're on a competitive rate. If you're an HSBC customer, it's easy to check your current rate: 

    - Online banking: Log in and select your home loan account.

    - Mobile app: Tap your mortgage account in the HSBC Australia Mobile Banking app.

    - Home loan statement: Your latest rate is listed on your statement.

  2. Review your budget
    Look for areas to optimise spending and save money. Small changes to daily expenses can often free up funds to cover mortgage adjustments.
  3. Contact us for support

    If you have trouble keeping up with payments, let us know as soon as you can. We can discuss options to support you, such as:

    - Switching to interest-only repayments for a set period (subject to eligibility criteria) 

    - Extending your loan term to reduce monthly payments

    - Accessing hardship provisions if you face financial difficulty

Frequently asked questions

Do home loan interest rates change on the same day as the RBA announcement?

No, there's usually a delay. It can take 20 to 60 days for new repayment amounts to come into effect.

Can I lock in my interest rate?

Yes, you can switch to a fixed rate home loan (subject to your lender's eligibility criteria). This locks in your interest rate and repayment amount for a specific term (for example, 1 or 5 years), protecting you from rate rises during that period.

How do I know if interest rates will go down soon?

Predicting rate cuts isn't easy. However, economists watch inflation trends closely. A rate cut becomes more likely when inflation settles within the RBA’s target range.

You might also be interested in

Don't want to switch to a variable interest rate upon your mortgage loan maturity date? Explore these other options.
A step-by-step guide to refinancing a home loan.
Discover how putting money into a redraw facility can save you money on home loan interest payments.

Important information

This article is intended to provide general information of an educational nature only. This information should not be relied upon as personal financial product advice as it does not take into account your individual objectives, financial situation or needs. You should consider the appropriateness of the information to your own circumstances and seek independent legal and financial advice prior to making any investment choice. There are risks associated with any investment and this document is not intended to list all of them in respect to any particular investment opportunity. Prices, levels and indications contained in this document are illustrative only and may not represent future performance. HSBC does not warrant or represent the performance of any investment opportunity. 

 

Disclaimer: Credit provided by HSBC Bank Australia ABN 48 006 434 162. AFSL/Australia Credit Licence 232595. Home Loan Terms (PDF), Personal Banking Booklet (PDF), Fees and Charges (PDF), and lending criteria apply. This article does not take into account your personal or financial situation. Please consider a relevant Product Disclosure Statement, available at hsbc.com.au or by calling 1300 308 008 before making a decision about this product.