Home Loan rate rise calculator

Stay ahead of rising mortgages with Finder's rate rise calculator. Find out how much more you might be paying.

4.6 based on 835 reviews

Key takeaways

  • The RBA has raised the cash rate four times in 2026 (February, March, May and September), taking it to 4.60%, which means variable home loan interest rates are rising.
  • If you're on a variable rate home loan you can use Finder's calculator to see how much your repayments will increase by.
  • If more rate rises are announced throughout 2026, home loans will continue to rise. So it's important to keep track of your rate changes and make sure you can afford them.

Home loan rate rise calculator

Rate rise calculator

See what a change to your interest rate does to your home loan repayments - and whether refinancing could work out lower.

What is your repayment type?
$
% p.a.
25 years

How your loan pays off

  • At your current rate
  • After the rise
Line chart comparing your home loan at your current interest rate against the same loan after the rate change.

Your new rate

5.55% p.a.

▲ Up 0.25% · 25 bp

Repayment change

+$0 a month

That's $0 more a year

Current repayment per month
$0
New repayment per month
$0
Interest change over term
—

See what you could save

These home loans in Finder's database work out cheaper than your new repayment. Repayments are estimates based on your loan amount and remaining term.

Lender Rate Monthly repayment You could save
How we calculated this
  • Loan amount and remaining term: taken from what you entered.
  • Current repayment: calculated using the interest rate you entered (or, if you didn't enter one, the market average variable rate published by the RBA for owner-occupier P&I loans, refreshed monthly).
  • New repayment after rate change: applied to the same balance and remaining term, using the rate change you selected.
  • "You could save" figures: the difference between your new repayment and each lender's advertised variable rate for a comparable loan in Finder's database, holding your balance and remaining term constant.
  • Long-term interest and savings: totalled over your remaining term in nominal dollars - the actual cash you'd pay or save. This matches ASIC's Moneysmart mortgage switching calculator; loan comparisons are shown as real cash outflows, not inflation-adjusted balances. Present-value discounting under ASIC Instrument 2026/41 applies to accumulation-style projections (super, investment balances) where purchasing power of a future balance matters - not to loan cash-flow comparisons.
  • Assumptions: repayments are principal-and-interest, made monthly, with no additional repayments, redraws or offset balances. Lender fees, LMI and government charges are not included. Rates shown are advertised rates and may not reflect what you're offered after credit assessment.
  • Data freshness: home loan rates are pulled from Finder's product database, updated regularly by our home loans team. Comparison rates are calculated on a $150,000 loan over 25 years unless the lender publishes a different basis.

If your loan is interest-only, these estimates won't be accurate for your cash-flow position. Use an interest-only calculator instead, or speak to a broker.

These figures are estimates, not quotes. Monthly repayments are calculated from the loan amount and remaining term you entered, using each lender's advertised variable rate on a principal-and-interest basis. Actual repayments will differ once the lender assesses your application and will depend on fees, your loan-to-value ratio and any future rate changes. If your existing loan is interest-only, the "You could save" figures won't reflect your real cash-flow change - compare on rate alone. All figures are shown in nominal dollars - the actual cash you'd pay or save across the loan term. This matches ASIC Moneysmart's approach for its mortgage switching calculator. See the assumptions panel for the full methodology.

Estimates only, not quotes. Repayments assume principal-and-interest and your entered loan amount and term. Figures are in nominal dollars over the loan term. Tap "How we calculated this" for details.

General advice warning. The information on this page is general in nature and doesn't take your objectives, financial situation or needs into account. Before acting on it, consider whether it's appropriate for you and read the lender's Key Facts Sheet, Target Market Determination and Credit Guide. Home loan rates, fees and features can change without notice. We recommend you speak to a licensed mortgage broker or financial adviser before deciding to refinance. Hive Empire Pty Ltd (ACL 385509) provides factual information and general advice only - not personal advice or a credit recommendation.

General advice only. This info doesn't consider your personal situation. Read each lender's Key Facts Sheet and consider speaking to a mortgage broker before refinancing. Hive Empire Pty Ltd, ACL 385509.

Compare more refinance rates

How to use the rate rise calculator

Enter the following details into the calculator (or estimate them if you don't know):

  1. Select your repayment type. Most borrowers have principal-and-interest repayments. This means you're paying back the loan plus interest. If you're not sure, just select that option for now. If you have an interest-only loan you're just paying the interest charge every month but not actually repaying the loan yet.
  2. Enter your remaining loan amount. Check your latest home loan statement and see how much you have left to repay on your home loan.
  3. Enter your current interest rate. Again, your home loan statement should have your current interest rate.
  4. Enter the rate change. This is the amount your rate will be changing by. This is usually 0.25%, but some lenders can vary their rate changes by more or less.
  5. Enter your remaining loan term. Most home loans have a 30-year term. Estimate how long you have left on your loan, to the nearest year.
Home loan repayment struggles
According to Finder data, 35% of homeowners struggled to pay their mortgage in January 2026.
12% say they've missed one or more mortgage repayments in the last 6 months. 28% of those people say it was down to interest rate increases. 41% said it was because they ran out of money.

What impact does a rate rise have on my home loan?

Even a small increase in interest rates can have a big impact on your monthly repayments.

The impact of a 0.25% increase on a home loan

The Reserve Bank of Australia (RBA) has increased the cash rate four times in 2026, most recently in September. Changes to the interest rate are usually 0.25% each time.

Let's take a look at how much one increase could impact home loan repayments.

Here's the original loan:

Loan details
Remaining loan amount$630,000
Remaining loan term26 years
Interest rate5.25%
Monthly repayment$3,706

Now let's try that again with a 0.25% higher rate. Every other loan detail is the same.

Loan details
Remaining loan amount$630,000
Remaining loan term26 years
Interest rate5.50%
Monthly repayment$3,800

Here we see that one rate hike of 25 basis points would increase loan repayments by $94 a month. Over a year, that works out to $1,128 more. That's just from one rate increase.

Frequently asked questions about calculating a rate change

Jason Loewenthal's headshot
To make sure you get accurate and helpful information, this guide has been edited by Jason Loewenthal as part of our fact-checking process.
Richard Whitten's headshot

Richard Whitten is Finder’s Senior Money Editor, with over eight years of experience in home loans, property, credit cards and personal finance. His insights appear in top media outlets like Yahoo Finance, Money Magazine, and the Herald Sun, and he frequently offers expert commentary on television and radio, helping Australians navigate mortgages and property ownership. Richard started his career in education and textbook publishing in South Korea. He holds multiple industry certifications, including a Certificate IV in Mortgage Broking (RG 206) and Tier 1 and Tier 2 certifications (RG 146), as well as a Bachelor of Education from the University of Sydney and a Graduate Certificate in Communications from Deakin University. See full bio

Richard's expertise
Richard has written 765 Finder guides across topics including:
  • Home loans
  • Credit cards
  • Personal finance
  • Money-saving tips

Get rewarded $$ for switching with Finder Rewards

Find a better deal, save on your bills and get a free gift card. Sign up to be the first to hear about new Finder Rewards.

Ask a question

You are about to post a question on finder.com.au:

  • Do not enter personal information (eg. surname, phone number, bank details) as your question will be made public
  • finder.com.au is a financial comparison and information service, not a bank or product provider
  • We cannot provide you with personal advice or recommendations
  • Your answer might already be waiting – check previous questions below to see if yours has already been asked

Finder only provides general advice and factual information, so consider your own circumstances, or seek advice before you decide to act on our content. By submitting a question, you're accepting our Terms Of Service and Finder Group Privacy & Cookies Policy.

This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.

More guides on Finder

  • Capital gains tax calculator

    Estimate your CGT when selling an investment property or other asset with Finder's simple capital gains tax calculator.

  • Comparison rate calculator

    The comparison rate represents the actual cost of a home loan by taking into account its interest rate and any additional fees charged by the lender.

  • Home loan eligibility calculator

    Check out our home loan borrowing power calculator to see if you'll be able to afford the loan you want.

  • Interest-only home loan calculator

    Estimate the cost of your repayments if you only pay the interest portion of your loan with an interest-only mortgage.

  • Fortnightly home loan repayment calculator

    With a fortnightly mortgage repayment instead of monthly, you could save thousands. Use our fortnightly payment calculator for home loans and save.

  • Offset calculator

    An offset account calculator can help you estimate the savings of a 100% home loan offset. Calculate your savings and compare 100% offset home loans today.

  • Home loan lump sum calculator

    Use a lump sum repayment calculator to see how much you can save in interest and fewer mortgage repayments. It's quick, free and easy to use.

  • Extra mortgage repayment calculator

    Our extra loan repayment calculator helps you see how you could save big on interest. Free, fast and easy to use - calculate in 1 minute!

  • Mortgage repayment calculator

    Want to know how to calculate monthly repayments on your new mortgage? In five steps our free home loan repayment calculator crunches the numbers for you.

Go to site