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Principal and interest home loans

When you make principal and interest repayments, you're paying off the money you've borrowed and the interest at the same time. It's the fastest way to pay off your home loan debt.

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If you're researching home loans, you've probably heard the term "principal and interest". And you may have wondered what that actually means. Luckily, it's very simple. Principal and interest home loans are the most common home loan type in Australia. With these loans, you borrow money (the principal) and pay it back with interest.

Compare some competitive principal and interest rates in the table below, and read on to learn more about the concept of principal and interest and how these loans work.

Compare principal and interest home loans in the table below

Data indicated here is updated
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Loan purpose
Offset account
Loan type
Repayment type
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Name Product Interest Rate (p.a.) Comp Rate^ (p.a.) Application Fee Ongoing Fees Max LVR Monthly Payment Short Description
HSBC Fixed Rate Home Loan - 2 Year Fixed Rate LVR 80% or below (Owner Occupier, P&I)
2.09%
2.98%
$0
$0 p.a.
80%
Lock in a competitive fixed rate for 2 years and buy your home with a 20% deposit.
UBank UHomeLoan - 1 Year Fixed Rate (Owner Occupier, P&I)
2.14%
2.46%
$395
$0 p.a.
80%
Fix your mortgage for 1 year with a very competitive rate and no ongoing fees.
Hunter United Fixed Home Loan - 2 Year Fixed (Owner Occupier, P&I)
2.19%
2.71%
$350
$0 p.a.
90%
Lock in a competitive rate for two years. Available with a 10% deposit.
UBank UHomeLoan - 3 Year Fixed Rate (Owner Occupier, P&I)
2.14%
2.41%
$395
$0 p.a.
80%
A competitive fixed interest rate loan with no ongoing fees. Requires a 20% deposit.
IMB Fixed Rate Home Loan - 2 Year Fixed (LVR 90% Owner Occupier, P&I, NSW and ACT borrowers only)
2.19%
3.10%
$449
$6 monthly ($72 p.a.)
90%
NSW and ACT customers only. 2 years fixed interest terms and free access to redraw facility online. Available with a 5% deposit.
Endeavour Mutual Bank Special Fixed Home Loan - 3 Year (Owner Occupier, P&I)
2.28%
2.86%
$250
$0 p.a.
95%
A competitive 3 year fixed rate loan for home buyers. Available with a 5% deposit.
Sydney Mutual Bank Special Fixed Home Loan - 3 Year (Owner Occupier, P&I)
2.28%
2.86%
$250
$0 p.a.
95%
A competitive fixed rate loan for home buyers. Available with a 5% deposit.
UBank UHomeLoan - 1 Year Fixed Rate (Investor, P&I)
2.29%
2.84%
$395
$0 p.a.
80%
Investors can enjoy flexible repayments and an easy application process with this pioneering online lender.
Westpac Fixed Options Home Loan Premier Advantage Package - 2 Year (Owner Occupier, P&I)
2.29%
3.53%
$0
$395 p.a.
95%
Up to $3,000 refinance cashback.
Competitive fixed rate loan available with a 5% deposit. Eligible borrowers refinancing $250,000 or more can get up to $3,000 cashback. Other conditions apply.
UBank UHomeLoan - 3 Year Fixed Rate (Investor, P&I)
2.29%
2.74%
$395
$0 p.a.
80%
Pay no ongoing fees on this investment loan fixed for 3 years.
Westpac Flexi First Option Home Loan - Basic Variable Rate (Owner Occupier, P&I)
2.29%
2.72%
$0
$8 monthly ($96 p.a.)
95%
Up to $3,000 refinance cashback.
A flexible and competitive variable rate loan. Eligible borrowers refinancing $250,000 or more can get $2,000 cashback per property plus a bonus $1,000 for their first application. Other conditions apply.
homeloans.com.au Low Rate Home Loan with Offset - LVR 60% to 80% (Owner Occupier, P&I)
2.39%
2.41%
$0
$0 p.a.
90%
This loan offers a competitive variable rate and a 100% offset account to help save you on interest repayments. This loan is not available for construction.
IMB Fixed Rate Home Loan - 3 Year Fixed (LVR 90% Owner Occupier, P&I, NSW and ACT borrowers only)
2.39%
3.08%
$449
$6 monthly ($72 p.a.)
90%
NSW and ACT customers only. 3 years fixed interest terms and free access to redraw facility online. Available with a 10% deposit.
Newcastle Permanent Building Society  Premium Plus Package Fixed Rate - 1 Year Fixed (Owner Occupier, P&I)
2.39%
3.85%
$0
$395 p.a.
95%
$2,000 refinance cashback
Enjoy a competitive rate with no application fee for this package loan. $2,000 cashback for eligible refinancers borrowing $250,000 or more.
Yard Variable Home Loan - LVR 80% Special (Owner Occupier, P&I)
2.39%
2.42%
$0
$0 p.a.
80%
A very low variable rate loan for home buyers with an optional offset account ($10 monthly fee). 20% deposit required.
Newcastle Permanent Building Society  Premium Plus Package Fixed Rate - 2 Year Fixed (Owner Occupier, P&I)
2.44%
3.76%
$0
$395 p.a.
95%
$2,000 refinance cashback
Enjoy a discounted fixed rate and the ability to package the loan with other financial products. $2,000 cashback for eligible refinancers borrowing $250,000 or more.
Athena Liberate Home Loan - 70% to 80% LVR Owner Occupier, P&I
2.44%
2.38%
$0
$0 p.a.
80%
A competitive variable rate mortgage for owner occupiers $0 application and $0 ongoing fees. This interest rate falls over time as you pay off the loan.
Newcastle Permanent Building Society  Premium Plus Package Fixed Rate - 3 Year Fixed (Owner Occupier, P&I)
2.49%
3.68%
$0
$395 p.a.
95%
$2,000 refinance cashback
A two year fixed rate home loan with no application fees. $2,000 cashback for eligible refinancers borrowing $250,000 or more.
UBank UHomeLoan Variable Rate - Discount Offer for Owner Occupiers, Variable P&I Rate
2.49%
2.49%
$0
$0 p.a.
80%
Enjoy flexible repayments, a redraw facility and the ability to split your loan. Plus, pay no application or ongoing fees.
Newcastle Permanent Building Society Fixed Rate Home Loan - 1 Year Fixed (Owner Occupier, P&I)
2.49%
4.12%
$595
$0 p.a.
90%
$2,000 refinance cashback
Investors can take advantage of a short term fixed rate with no ongoing fees. $2,000 cashback for eligible refinancers borrowing $250,000 or more.
Bank of Melbourne Basic Home Loan - Special Offer (Owner Occupiers, P&I) LVR above 60% up to 80%
2.54%
2.56%
$0
$0 p.a.
80%
Up to $4,000 refinance cashback
A competitive variable rate loan from Bank of Melbourne. Refinancers borrowing $250,000 or more can get $4,000 cashback (Other terms, conditions and exclusions apply).
BankSA Basic Home Loan - Owner Occupier, P&I
2.54%
2.56%
$0
$0 p.a.
80%
Up to $4,000 refinance cashback
A competitive variable rate loan from BankSA. Refinancers borrowing $200,000 or more can get a $4,000 cashback (Other terms, conditions and exclusions apply).
homeloans.com.au Low Rate Home Loan with Offset - LVR 60% to 80% (Investment, P&I)
2.54%
2.56%
$0
$0 p.a.
80%
This investment loan keeps fees low, has a sharp interest rate and comes with a 100% offset account. This loan is not available for construction.
Newcastle Permanent Building Society Fixed Rate Home Loan - 2 Year Fixed (Owner Occupier, P&I)
2.54%
3.98%
$595
$0 p.a.
95%
$2,000 refinance cashback
Borrow up to 95% LVR of the value of the property you're buying and pay no ongoing fees. $2,000 cashback for eligible refinancers borrowing $250,000 or more.
St.George Basic Home Loan - LVR 60% to 80% (Owner Occupier, P&I)
2.54%
2.56%
$0
$0 p.a.
80%
Up to $4,000 refinance cashback. A competitive variable rate loan from St.George. Refinancers borrowing $250,000 or more can get $4,000 cashback (Other terms, conditions and exclusions apply).
CUA Achieve Variable Home Loan - $500k+ (Owner Occupier, P&I)
2.55%
2.60%
$600
$0 p.a.
95%
Home buyers can get a competitive, low-fee variable rate plus a 100% offset account. Low deposit option available. Eligible new home buyers with low deposits can apply for the First Home Loan Deposit Scheme with this lender and avoid LMI costs. Eligible refinancers can get a $2,000 pre-paid credit card when they switch to CUA.
AMP Bank Professional Package Variable Rate Home Loan - $100,000 and above, LVR ≤ 80% incl. LMI (Owner Occupier, P&I)
2.59%
3.00%
$0
$349 p.a.
80%
Get a sharp rate with no application or settlement fee, a redraw facility and 100% offset account. Other fees and charges apply.
Heritage Bank Advantage Package - 1 Year Fixed (Owner Occupier, P&I) New Customers Only
2.59%
3.34%
$0
$350 p.a.
95%
Get a partial offset account and flexible repayments with this package loan.
Heritage Bank Fixed Rate Home Loan - 2 Year Fixed Rate (Owner Occupier, P&I) New Customers Only
2.59%
4.30%
$600
$8 monthly ($96 p.a.)
95%
Get a partial offset account and the option to make interest-only repayments.
HSBC Home Value Loan - Promotional Offer (Owner Occupier P&I)
2.59%
2.60%
$0
$0 p.a.
80%
Get a low interest rate loan with no ongoing fees. Plus you can make extra repayments and free redraw online.
Newcastle Permanent Building Society Fixed Rate Home Loan - 3 Year Fixed (Owner Occupier, P&I)
2.59%
3.86%
$595
$0 p.a.
95%
$2,000 refinance cashback
A low 3-year fixed rate with the option to split your loan for free. $2,000 cashback for eligible refinancers borrowing $250,000 or more.
Newcastle Permanent Building Society Real Deal Home Loan - Special Offer 1 (Owner Occupier, P&I)
2.59%
2.63%
$595
$0 p.a.
80%
$2,000 refinance cashback
$2,000 cashback for eligible refinancers borrowing $250,000 or more.
UBank UHomeLoan - 5 Year Fixed Rate (Owner Occupier, P&I)
2.59%
2.53%
$395
$0 p.a.
80%
A five year fixed rate offer with no ongoing bank fees.
IMB Fixed Rate Home Loan - 3 Years Fixed (LVR ≤90% Investor, P&I, NSW and ACT borrowers only)
2.64%
3.56%
$449
$6 monthly ($72 p.a.)
90%
NSW and ACT customers only. A 3 years fixed rate investor which allows extra repayments to be made.
Yard Variable Home Loan - LVR 90% (Owner Occupier, P&I)
2.65%
2.68%
$0
$0 p.a.
90%
A competitive variable rate for home buyers with 10% deposits saved. Optional offset account (with $10 monthly fee).
HSBC Home Value Loan - Promotional Offer LVR 90% (Owner Occupier, P&I)
2.69%
2.70%
$0
$0 p.a.
90%
A competitive value home loan with no ongoing fee.
Bankwest Complete Home Loan Package Variable - $200k to <$750k LVR ≤80% (Owner Occupier, P&I)
2.73%
3.18%
$0
$395 p.a.
80%
A low variable rate loan with a 100% offset account and package discounts.
homeloans.com.au Low Rate Home Loan with Offset - LVR 80% to 90% (Owner Occupier, P&I)
2.74%
2.76%
$0
$0 p.a.
90%
Save on interest with a free 100% offset account and buy your property with just a 10% deposit. This loan is not available for construction.
UBank UHomeLoan - 5 Year Fixed Rate (Investor, P&I)
2.74%
2.83%
$395
$0 p.a.
80%
Lock in a 5 year fixed rate on your investment loan and pay no ongoing fees.
Heritage Bank Discount Variable Home Loan - LVR ≤ 80% (Owner Occupier, P&I) New Customers Only
2.78%
2.83%
$600
$0 p.a.
80%
Family guarantee option available. Enjoy flexible repayments and a low minimum loan amount.
IMB Budget Home Loan - Special LVR  ≤90% (Owner Occupier, P&I, NSW and ACT borrowers only)
2.78%
2.84%
$449
$0 p.a.
90%
NSW and ACT customers only. You can get an interest rate discount for a limited time with this competitive variable mortgage.
Athena Liberate Home Loan - 70% to 80% LVR Investor, P&I
2.79%
2.74%
$0
$0 p.a.
80%
A competitive investor variable rate that falls as you build equity.
homeloans.com.au Low Rate Home Loan with Offset - LVR 80% to 90% (Investment, P&I)
2.89%
2.91%
$0
$0 p.a.
90%
Access a fee-free offset account and a special interest rate for investors. This loan is not available for construction.
UBank UHomeLoan Variable Rate - Discount Offer for Investor Variable P&I Rate
2.89%
2.89%
$0
$0 p.a.
80%
Get a discounted, low-fee investor loan from a convenient online lender. 20% deposit required.
Greater Bank Ultimate Home Loan - Construction Loan (Owner Occupier, P&I)
3.46%
3.88%
$0
$395 p.a.
90%
Build your new home with a variable interest rate and enjoy a 100% offset account. 10% deposit option available.
Newcastle Permanent Building Society Premium Plus Package Home Loan - New Customer Offer Discount 1 ($150k+ Owner Occupier, P&I)
2.94%
3.34%
$0
$395 p.a.
95%
$2,000 refinance cashback
New borrowers or refinancers can get a discounted rate with this package loan. $2,000 cashback for eligible refinancers borrowing $250,000 or more.
Greater Bank Great Rate Home Loan - Construction Loan (Owner Occupier, P&I)
3.66%
3.67%
$0
$0 p.a.
90%
Fund the construction of your new family home with a very competitive variable interest rate. Available with a 10% deposit.
Newcastle Permanent Building Society Premium Plus Package Home Loan - Tier 1: below $500k (Owner Occupier, P&I)
3.77%
4.15%
$0
$395 p.a.
95%
$2,000 refinance cashback
No application fee and 100% offset account. $2,000 cashback for eligible refinancers borrowing $250,000 or more.
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Credit services for Aussie Select, Aussie Activate and Aussie Elevate products are provided by AHL Investments Pty Ltd ACN 105 265 861 (“Aussie”) and its appointed credit representatives, Australian Credit Licence 246786. Credit for Aussie Select products is provided by Residential Mortgage Group Pty Ltd ACN 152 378 133, Australian Credit Licence 414133 (“RMG”). RMG is a wholly-owned subsidiary of the Commonwealth Bank of Australia ABN 48 123 123 124 AFSL and Australian Credit Licence 234945. Credit for Aussie Activate products is provided by Pepper Finance Corporation Limited ACN 094 317 647 (“Pepper”). Pepper Group Limited ACN 094 317 665, Australian Credit Licence 286655 acts on behalf of Pepper. Credit services for Aussie Elevate products are provided by AHL Investments Pty Ltd ACN 105 265 861 Australian Credit Licence 246786 (“Aussie”) and its appointed credit representatives. Aussie is a trade mark of AHL Investments Pty Ltd ABN 27 105 265 861. Credit and any applicable offset accounts for Aussie Elevate are issued by Bendigo and Adelaide Bank Limited ABN 11 068 049 178 AFSL / Australian Credit Licence 237879.

Aussie is a trade mark of AHL Investments Pty Ltd. Aussie is a subsidiary of the Commonwealth Bank of Australia ABN 48 123 123 124. ©2020 AHL Investments Pty Ltd ABN 27 105 265 861 Australian Credit Licence 246786.

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After entering your details a mortgage broker from Aussie will call you. They will discuss your situation and help you find a suitable loan.

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When you borrow money to buy a home, you have to repay it – obviously. The amount of money you've borrowed is called the loan principal (it's sometimes called the loan amount). You have to repay this money over time, but you also have to pay interest.

Interest is money charged on top of the loan principal. The amount of interest you pay is determined by your home loan's interest rate. The size of your loan principal also affects the amount of interest charged. The more you borrow, the more interest you pay.

How principal and interest home loans work

Most home loans are principal and interest loans. With these loans, you repay the loan principal plus interest at the same time. Every month, you make repayments on your home loan. Part of the repayment is interest and part of it is principal.

Here's a simple example using Finder's home loan repayment calculator:

  • Property value. You buy a home for $600,000.
  • Deposit. $120,000.
  • Loan principal. $480,000.
  • Interest rate. 2.60%.
  • Loan term. 30 years.
  • Monthly repayments (principal and interest). $1,921.

With this example, you're repaying $1,921 a month (assuming interest rates don't change). With interest charged on top, your $480,000 loan principal plus interest will end up costing you $691,787 over 30 years.

That's $211,787 in interest charges plus the original loan principal.

Why am I paying more interest and less principal at the start of the loan?

When you start making mortgage repayments, you might notice that most of your repayment is paying off the interest at the beginning of the loan. Only a small amount will go towards the principal. As you continue paying off the loan, you'll pay off more principal and less interest.

This is because your lender has worked out exactly how much you'll need to spend on each repayment to pay off your loan in the term you've agreed to. The result of these calculations is called an amortisation schedule. The schedule shows how much of your payments goes towards interest and how much goes towards the principal. The amount that goes towards paying off the principal gets bigger as the years go on and does so at a faster rate.

Here's a simple graph to illustrate how mortgage interest and principal are repaid together over time.

Graphic explaining how principal and interest repayments work.

Principal and interest loans versus interest only loans

Borrowers have an alternative to principal and interest repayments: interest only home loans. These loans have an initial period where the borrower doesn't repay the loan principal at all. Instead, they just pay the interest charges.

This makes their repayments smaller at first. But eventually, the loan will revert to principal and interest repayments, meaning you have to pay off the principal.

This means that interest only home loans start cheaper but end up being more expensive.

Here's an example using two loans. They are identical except that one is principal and interest while the other is interest only for the first three years.

DetailsPrincipal and interestInterest only
Loan principal$400,000$400,000
Loan term30 years30 years
Interest rate2.45%2.45%
Interest only periodN/A3 years
Monthly repayments$1,570$817 (during interest only period)
$1,689 (after interest only period)
Total interest$165,237$176,574
Total loan cost over 30 years$565,237$576,574

Here we can see that making interest only payments for 3 years ultimately costs you an extra $11,337 in interest.

Why do some borrowers choose interest only payments?

Interest only loans are commonly used by investors to minimise their non-tax-deductible costs (interest charges on an investment property are tax deductible but principal payments are not).

This can be beneficial for investors planning to hold an investment property for a short time in a growth market. Instead of paying off the loan, these investors plan to see a quick capital growth (the value of the property rising) and then sell the property. With this strategy, an interest only loan allows the investor to minimise their repayments.

Some owner-occupiers choose to make interest only repayments for a short time if they are struggling to make repayments or have a reduced income.

Principal and interest calculator

You can use Finder's free home loan calculator to see how the principal and interest components of a home loan work.

Just enter some basic loan details, including loan amount (the principal) and an interest rate. In the repayment type field, you can select P&I (principal and interest) or interest only.

How do I compare principal and interest mortgages?

When comparing loans with principal and interest repayments, the interest rate is the first thing you should look at. The lower the interest rate, the lower your repayments will be.

But there's more to it than that:

  • Interest rate. The lower the better, but pay attention to the fine print. Some home loans offer introductory discount rates that are quite low but revert to a higher rate later.
  • Rate type. You need to look at fixed and variable loans and decide which is better for you. Variable rates tend to offer more features and greater flexibility while fixed rates offer certainty around repayments. Learn more about the fixed versus variable decision.
  • Features. Compare loan features and make sure the loan offers what you need (for example, an offset account, portability or the ability to make extra repayments).
  • Loan purpose. Make sure you compare the right type of loans for your specific circumstances. If you're an investor, look at principal and interest investment loans. If you're buying a home, you will need to look at principal and interest owner-occupier loans.
  • Fees. The interest rate isn't the only thing that affects your costs. Look at the fees that come with the loan, including application, settlement and ongoing fees.
  • Lender. Don't forget to compare lenders. You may want the speed and convenience of an online lender or you may want to talk to a lending specialist at one of the big banks. Different lenders have different appetites for risk depending on your borrowing circumstances, so it's worth inquiring with a few lenders before submitting a full application.

How can I pay off my loan principal faster?

A big advantage of principal and interest home loans is that you're repaying the loan principal from day one. This means you're not only paying off debt, you're building equity in your home (that's the value of your property minus any outstanding debts).

And if you can repay the loan faster, you'll get out of debt sooner and pay less in interest. There are several ways you can do this, and it depends on your loan's features:

  • Make extra repayments. If your loan allows you to make extra repayments, then you can repay the loan faster this way. Even paying an extra $100 a week on your mortgage could save you thousands in interest over the life of your loan.
  • Use your offset account. Even better than extra repayments is if your loan has an offset account you can put some extra cash in. This mimics the effect of extra repayments by reducing your loan principal, but if you need to access the cash, it's yours (but if you do take it out of the offset account, your loan principal will increase).
  • Make fortnightly repayments. Switching from monthly to fortnightly repayments gives you a slight boost. This is because there are 12 months in the year but there are 26 fortnights, giving you effectively an extra fortnight's repayment per year.
  • If your rate rises, switch. If you've had your home loan for a few years, you might be surprised how high your rate is now. Yes, rates are low right now, but your lender might only be offering their best deals to new customers. Asking your lender for a lower rate or switching to a better home loan with a new lender, can save you thousands. If you get a lower interest rate but keep your repayments the same as before, then you're effectively making extra repayments immediately.

Home Loan Offers

Important Information*
Logo for Westpac Flexi First Option Home Loan - Basic Variable Rate (Owner Occupier, P&I)
Westpac Flexi First Option Home Loan - Basic Variable Rate (Owner Occupier, P&I)

Up to $3,000 refinance cashback. A flexible and competitive variable rate loan. Eligible borrowers refinancing $250,000 or more can get $2,000 cashback per property plus a bonus $1,000 for their first application. Other conditions apply.

Logo for St.George Basic Home Loan - LVR 60% to 80% (Owner Occupier, P&I)
St.George Basic Home Loan - LVR 60% to 80% (Owner Occupier, P&I)

Up to $4,000 refinance cashback. A competitive variable rate loan from St.George. Refinancers borrowing $250,000 or more can get $4,000 cashback (Other terms, conditions and exclusions apply).

Logo for Athena Liberate Home Loan - 70% to 80% LVR Owner Occupier, P&I
Athena Liberate Home Loan - 70% to 80% LVR Owner Occupier, P&I

A competitive variable rate mortgage for owner occupiers $0 application and $0 ongoing fees. This interest rate falls over time as you pay off the loan.

Logo for UBank UHomeLoan Variable Rate - Discount Offer for Owner Occupiers, Variable P&I Rate
UBank UHomeLoan Variable Rate - Discount Offer for Owner Occupiers, Variable P&I Rate

Take advantage of a low-fee mortgage with a special interest rate of just 2.49% p.a. and a 2.49% p.a. comparison rate.

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