How long should my home loan be?

The longer your repayment term the more interest you pay. Work out how long your mortgage needs to be.

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The longer the term is, the lower your repayments will be over time, but the more interest you'll pay. A few years can make a significant difference in the overall cost of your home loan.

Length of mortgage comparison

Let's compare a 25 and 30 year mortgage.

Loan details25 Years30 Years
Loan amount$300,000$300,000
Interest rate6.70% p.a.6.70% p.a.
Monthly repayment$2,063$1,936
Total interest payable$318,982$396,900
Interest saving$77,918

* based on monthly, principal and interest repayments

In this example, the choice of a 25 year home loan length does cost the borrower an extra $127 per month compared with a 30 year loan, but it also saves the borrower a staggering $78,000 over the life of the loan.

On the other hand, a 30 year loan term has lower repayments, as you now have five additional years to pay off the same loan amount. However, you'll also be paying interest for an additional five years.

Learn more about difference between a 25 and a 30 year home loan term

Generally speaking, home loan terms can include 10, 15, 25, 30 or even 40 year loan terms. 25 and 30 year loan terms are the most common, with 10 and 15 year loan terms generally being confined to interest-only repayments and 40 year loan terms only offered by a small number of lenders.

Choosing to take out a home loan with a 40 year term will have even lower repayments than a 30 year loan term—$1,805.20 on $350,000 loan with a rate of 5.50% compared to $1,987.26 with a 30 year loan term, or $2,149.31 on a 25 year loan term. It’ll also come with a much larger interest bill—$516,496 vs $365,413.60 on a 30 year loan.

Learn more about 40 year home loan terms

Even if you have a longer loan term, you may be able to make additional repayments or make use of repayment strategies which decrease your loan term. Making additional repayments or lump sum payments, or splitting your monthly loan repayment into fortnightly payments can see you pay your loan off in a shorter time period.

Refinancing mistake: refinancing to a lower interest rate and not adjusting your loan length

One mistake to avoid is refinancing to a cheaper interest rate and taking out a new 30 year term. This can erode your refinancing savings, as you can see below.

Original loanRefinance after 5 years
loan term30 years30 years (which means a real overall loan term of 35 years)
loan amount$300,000$281,470
interest rate6.70% p.a.5.70% p.a.
monthly payment$1,936$1,634
total interest payable$396,900$404,266 ($306,645 in interest from the point of refinancing)
interest saving$7,365

* based on monthly, principal and interest repayments

Compare refinance home loans today

Rates last updated October 18th, 2019
$
Loan purpose
Offset account
Loan type
Repayment type
Your filter criteria do not match any product
Name Product Interest Rate (p.a.) Comp Rate^ (p.a.) Application Fee Ongoing Fees Max LVR Monthly Payment Short Description
3.02%
3.04%
$0
$0 p.a.
90%
This rate is effective from 21 October for all HSBC customers. Get a low interest rate loan with no ongoing fees. Plus you can make extra repayments and free redraw online. Available with just a 10% deposit.
2.84%
2.84%
$0
$0 p.a.
80%
This rate will drop to 2.84% p.a on 29 October 2019 for new and existing customers. Enjoy flexible repayments, a redraw facility and the ability to split your loan. Plus, pay no application or ongoing fees.
2.84%
2.80%
$0
$0 p.a.
80%
Owner occupiers looking to refinance can get one of the lowest rates in the market with this variable rate mortgage. $0 application fee and $0 ongoing fees. Refinancers only.
2.84%
2.97%
$600
$10 monthly ($120 p.a.)
70%
A very low variable interest rate for home buyers with a 30% deposit. This product has a 100% offset account.
3.03%
3.04%
$0
$0 p.a.
90%
Get one free online redraw per month and pay no ongoing fees. Application fees are waived for loans above $150,000.
2.99%
3.45%
$0
$10 monthly ($120 p.a.)
90%
Buy your home and lock in a low rate for the first two years. Available with a 10% deposit. Earn Velocity Frequent Flyer Points at settlement, monthly and every three years, plus extra bonus points for a limited time.
3.24%
3.20%
$0
$0 p.a.
80%
Athena offers one of the lowest rates in the market for investors looking to refinance their mortgage. No ongoing fees and no application fee. Principal and interest repayments. Refinancers only.
2.99%
3.73%
$0
$375 p.a.
90%
Get a very competitive 3 year fixed rate with low fees and only a 10% deposit. Refinance to this loan and receive a $2,000 cashback when borrowing $250,000 or more.
3.33%
3.47%
$0
$10 monthly ($120 p.a.)
80%
This flexible, competitive variable rate mortgage comes with a redraw facility. Eligible borrowers can earn Velocity Frequent Flyer Points, plus extra bonus points for a limited time.
2.94%
2.97%
$600
$10 monthly ($120 p.a.)
80%
A competitive variable rate for home buyers with a 20% deposit. This product has a 100% offset account.

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