Interest Only Home Loans Australia
Quick Answer
How do interest only home loans work in Australia?
Pay only the interest for 1 to 5 years
An interest only home loan lets you pay just the interest portion for a set period, typically 1 to 5 years. Your repayments are lower during the IO period because you are not paying down the principal. This structure is most common among property investors who want to maximise cash flow and may claim the interest as a tax deduction on investment loans.
- Typical IO period 1 to 5 years
- Common max LVR Up to 80%
- IO rate premium 0.20% to 0.50%
- Most common use Investment property
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Two factors that shape your interest only home loan
Repayment structure and loan purpose
Lenders assess IO loans differently depending on whether the property is owner-occupied or an investment. Investment IO loans are more common and generally easier to approve because lenders factor in rental income and recognise the tax planning rationale behind the IO structure.
Serviceability
Exit strategy and IO period expiry
When the IO period ends, your repayments increase because the remaining principal must be repaid over a shorter term. Lenders assess whether you can afford the higher P&I repayments at expiry, not just the lower IO repayments. A clear exit plan is important for approval.
Repayment RiskTypical LVR ranges for interest only home loans
These are general guide ranges only. Final terms depend on the lender, borrower profile, loan purpose and property type.
-
Up to 60% LVR Self-employed or limited income evidence
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Up to 70% LVR Owner-occupier IO with strong income
-
Up to 80% LVR Investor IO with full income verification
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Up to 90% LVR Select lenders with LMI, strong borrower
IO approval depends heavily on your ability to service P&I repayments at the end of the interest only period. Lenders use a buffer rate, typically 3% above the actual rate, when assessing serviceability.
Looking for an interest only home loan?
What lenders look for in an interest only home loan
IO loans are assessed on your ability to service principal and interest repayments once the IO period expires, not just the lower IO amount.
Sufficient income to service P&I repayments at buffer rate- Clear loan purpose, whether investment or owner-occupied
- Acceptable LVR based on property valuation
- Clean credit history and manageable existing debts
- Reasonable IO period length relative to loan term
Self-employed borrowers may also want to compare low doc home loans if full income documentation is not available.
Common interest only loan scenarios
IO loans suit a range of borrower situations where lower short-term repayments or cash flow flexibility is the priority.
Investor IO loans- Owner-occupier IO
- Portfolio cash flow
- Short-term holding
- Bridging or renovation
If you are building a portfolio of investment properties, see how to build a property portfolio.
Key factors for interest only home loan approval
These factors typically determine whether your IO application suits a major bank, non-bank or specialist lender pathway.
01
Loan purpose
Investors generally have more IO options than owner-occupiers. Lenders view investment IO more favourably because the interest may be tax-deductible.
02
Serviceability
You must demonstrate the ability to repay on a P&I basis after the IO period, assessed at the lender's buffer rate. This is the most common reason IO applications are declined.
03
IO period length
Most lenders offer 1 to 5 years. Longer IO periods reduce borrowing capacity because the principal is repaid over a shorter remaining term.
04
LVR and equity
Higher LVRs on IO loans can be harder to approve. Most lenders prefer 80% LVR or below for IO. A larger deposit or equity position improves your options.
05
Income verification
PAYG borrowers with stable employment have the most IO options. Self-employed borrowers may need BAS, tax returns or accountant declarations to support the application.
06
Existing debt position
Your total debt commitments, including other home loans, credit cards and personal loans, affect how much you can borrow on an IO basis. Consolidating debts may help serviceability.
Common problems with interest only home loans
IO loans can look attractive on paper, but several issues catch borrowers off guard if they are not planned for.
Repayment shock when IO expires
When the IO period ends, repayments can jump significantly because the full principal must be repaid over the remaining loan term. A 30-year loan with 5 years IO becomes 25 years of P&I.
Model your post-IO repayments before committing and plan whether to extend, refinance or switch to P&I.
No principal reduction during IO period
Because you are only paying interest, the loan balance stays the same throughout the IO period. If property values fall, you could end up owing more than the property is worth.
Consider making voluntary extra repayments during the IO period to reduce your principal gradually.
Higher total interest cost over the loan
IO loans cost more in total interest over the life of the loan because the principal is not being reduced during the IO years and you typically pay a higher rate.
Compare the total cost of IO versus P&I over the full loan term, not just the monthly repayment difference.
Difficulty extending or refinancing at expiry
Lender policies change over time. Some borrowers find that extending the IO period or refinancing to another IO loan is harder than expected if their circumstances or lending criteria have shifted.
Review your IO exit strategy well before the expiry date so you have time to explore options.
How to get an interest only home loan in 6 steps
Step
01
Clarify your loan purpose
Confirm whether the property is for investment or owner-occupied use. This determines the IO options, rate and serviceability assessment available to you.
Step
02
Check your serviceability
Lenders assess your ability to repay on a P&I basis after the IO period, not just the lower IO amount. Gather income evidence and review existing debts.
Step
03
Choose your IO period
Decide how long you need the interest only period. Shorter IO periods are easier to approve and result in smaller repayment jumps when the IO expires.
Step
04
Prepare your documents
Gather payslips, tax returns, bank statements, rental income evidence and details of existing debts. Self-employed borrowers may need BAS or accountant letters.
Step
05
Compare IO lender options
Not all lenders offer the same IO terms. Compare rates, IO period lengths, LVR limits and features like offset accounts across banks and non-bank lenders.
Step
06
Plan your IO exit strategy
Before committing, understand what happens when the IO period ends. Model the P&I repayments and decide whether you will refinance, extend or begin paying principal.
How interest only home loans work in Australia
An interest only home loan works the same as a standard home loan, except that during the IO period you only pay the interest charged on the outstanding balance. You are not required to make principal repayments until the IO period ends, at which point the loan reverts to principal and interest repayments over the remaining term.
For example, on a $600,000 loan at 6.00% over 30 years with a 5-year IO period, your monthly repayment during IO would be around $3,000 per month (interest only). Once the IO period ends, the full $600,000 must be repaid over the remaining 25 years, pushing your monthly repayments to approximately $3,865. That is a jump of roughly $865 per month.
Most property investors in Australia use IO loans strategically. The lower holding costs free up cash for further investment, and the interest on investment property loans may be tax-deductible. Some investors pair IO with negative gearing to reduce their taxable income during the holding period.
Owner-occupiers can access IO loans too, though lender criteria are tighter and the tax benefit does not apply to the home you live in. Owner-occupied IO is sometimes used during short-term cash flow pressure, renovation periods or while selling another property.
Get help with interest only home loans
Interest only home loans involve specific serviceability requirements, IO period selection and exit planning that vary between lenders. A suitable finance contact can help you compare IO options and structure your loan correctly.
Property Finance Help connects users with finance professionals who understand IO lending for both investors and owner-occupiers.
Property Finance Help is a lead generation service, not a lender, broker, or financial adviser. All information on this website is general in nature and does not take into account your personal objectives, financial situation, or needs. Consider seeking independent professional advice before making any financial decision.
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