For Australian property investors, interest rates can have a significant impact on whether an investment property produces a positive cash flow or requires ongoing financial support.

When rates stay higher for longer, the pressure can extend beyond the monthly mortgage repayment. Higher borrowing costs can affect rental yields, borrowing capacity, property demand, investment decisions and ultimately the value investors place on property.

In this episode of The CEO Breakdown, John Saade examined the pressure higher interest rates are placing on Australia’s property market and why investors need to look beyond property prices when assessing an investment.

The key question is not simply whether property prices will rise or fall.

It is whether your investment still works if borrowing costs remain elevated for an extended period.

How Do Higher Interest Rates Affect Property Investors?

The most immediate impact is usually higher borrowing costs.

According to the Reserve Bank of Australia, average interest rates on outstanding investment housing loans were 6.44% in July 2026, while new investment loans averaged 6.41%. For investment loans with interest-only repayments, the average rate was 6.57% for outstanding loans and 6.50% for new loans.

For an investor with a substantial mortgage, even a relatively small change in the interest rate can materially affect annual cash flow.

For example, consider an investment loan of $600,000.

A 1% increase in the interest rate could represent approximately $6,000 in additional annual interest, before considering the effects of compounding, loan structure or changes in repayments.

That additional expense needs to be funded somehow.

What Happens to Your Investment Property Cash Flow?

Cash flow is one of the first areas investors should examine when rates remain high.

An investment property may generate rental income, but that income needs to be compared against the property’s total expenses.

These can include:

• Mortgage interest
• Property management fees
• Council rates
• Insurance
• Repairs and maintenance
• Strata or body corporate fees
• Land tax where applicable
• Utilities paid by the owner
• Vacancy periods
• Accounting and other professional costs

If rental income does not cover these expenses, the investor needs to fund the shortfall from another source.

Higher interest rates can therefore turn an investment that previously appeared manageable into one requiring significantly more cash each year.

Why Negative Gearing Can Become More Important

Higher interest rates can also affect negative gearing.

The RBA’s research into Australian housing investors found that the share of investors with negatively geared properties has historically moved with interest rates. Higher rates increase interest expenses, making it more likely that properties generate a tax-deductible loss.

However, investors should remember an important distinction:

A tax deduction does not eliminate the underlying cash loss.

If an investment property costs more to hold than the income it generates, the investor still has to fund the difference.

The tax system may reduce the after-tax impact, depending on the investor’s circumstances, but the property still needs to be financially sustainable.

What If Interest Rates Stay Higher for Longer?

The biggest risk is that investors may have built their investment strategy around the assumption that interest rates will eventually fall.

If rates remain elevated for longer than expected, several things can happen.

1. Mortgage costs remain high

Investors continue paying higher interest expenses rather than receiving the anticipated relief from lower rates.

2. Cash flow remains under pressure

Rental income may not increase quickly enough to offset higher financing and operating costs.

3. Borrowing capacity can be reduced

Higher loan repayments can reduce the amount an investor can borrow for another property.

4. Investment demand can weaken

Potential investors may decide that property no longer provides an attractive risk-adjusted return compared with other investments.

5. Property prices can come under pressure

If fewer buyers can afford to borrow or are willing to invest, demand can weaken.

The RBA reported in August 2026 that housing prices had declined by 1.6% from their March peak, while housing market activity and new housing loan demand had also eased.

Does a Higher Interest Rate Automatically Mean Property Prices Will Fall?

No.

Property prices are influenced by many factors, including:

• Household income
• Population growth
• Housing supply
• Employment
• Credit availability
• Investor demand
• Consumer confidence
• Construction costs
• Interest rates
• Government policy

Higher interest rates can place downward pressure on demand, but they are only one part of the property market.

The RBA noted that Australia’s housing prices remained around 5% higher than a year earlier in August 2026 despite the recent decline from the March peak.

This is an important reminder that a short-term market decline does not necessarily tell an investor whether a particular property is a good or bad long-term investment.

How Higher Rates Affect Property Investment Decisions

When borrowing costs increase, investors may start looking at property differently.

During periods of very low interest rates, an investor might have accepted a relatively low rental yield because the strategy relied heavily on future capital growth.

When financing costs rise, that strategy becomes harder to sustain.

Investors may instead place greater emphasis on:

• Rental yield
• Net cash flow
• Debt levels
• Location fundamentals
• Tenant demand
• Vacancy rates
• Long-term capital growth prospects
• Tax implications
• Alternative investment returns

The RBA’s research shows that around 80% of housing investors have at least one leveraged property, highlighting how important borrowing costs are to a large portion of the investment-property market.

What Happens to Your Borrowing Capacity?

Higher interest rates can also affect investors who are not currently struggling with their repayments.

Banks assess whether borrowers can service their loans under specified affordability requirements.

As the cost of existing debt increases, an investor may have less capacity to take on additional borrowing.

This can affect plans to:

• Purchase another investment property
• Refinance
• Renovate
• Expand a property portfolio
• Use existing equity for another investment

For investors pursuing a portfolio strategy, this can be particularly important.

A strategy that worked when borrowing costs were lower may need to be reassessed when financing becomes more expensive.

Why Rental Income Matters More When Rates Are High

Rental income becomes particularly important when interest costs are elevated.

Investors should examine whether current rent reflects the property’s market value and whether there is realistic potential for future rental growth.

However, investors should be careful about assuming that rents will simply continue increasing.

Rental markets vary significantly by location and property type.

A property with strong tenant demand may provide more reliable income than one where vacancies are common.

The objective should therefore be to understand the property’s actual rental fundamentals rather than relying on broad assumptions about Australia’s rental market.

What About Interest-Only Investment Loans?

Interest-only loans can provide lower initial repayments because the borrower is not paying down the principal during the interest-only period.

However, the investor needs to understand what happens when the interest-only period ends.

The RBA’s July 2026 data showed average interest rates on outstanding interest-only investment housing loans at 6.57%, compared with 6.38% for principal-and-interest investment loans.

Investors should therefore understand:

• When the interest-only period ends
• What the repayments could become
• Whether the loan will automatically convert to principal and interest
• Whether refinancing will be possible
• Whether the property remains affordable under higher repayments

Planning for this before the loan changes can prevent unpleasant surprises later.

What Should Property Investors Do When Rates Stay High?

There is no single response that applies to every investor.

Instead, investors should review the numbers around their own property.

Review your cash flow

Calculate the property’s actual annual income and expenses.

Stress-test your mortgage

Consider what happens if interest rates remain high for another year or longer.

Review your rental income

Check whether the current rent reflects market conditions.

Examine your debt

Understand your loan balance, interest rate, repayment structure and refinancing options.

Review your tax position

Consider how interest expenses, rental income, deductions and future capital gains interact with your overall tax position.

Consider opportunity cost

Ask what other opportunities may be available for the capital and borrowing capacity committed to the property.

Avoid relying entirely on capital growth

A property investment should be assessed on its complete financial position rather than an assumption that prices will rise.

What Does the Current Australian Property Market Mean for Investors?

The current environment is more complicated than simply saying property is either rising or falling.

The RBA has reported that financial conditions remain somewhat restrictive, housing activity has softened, and housing prices have declined from their recent peak. At the same time, the housing investor population remains relatively resilient, with investors generally carrying higher debt relative to income than owner-occupiers.

This means investors need to pay attention to their individual financial position.

Two investors can own similar properties and experience completely different outcomes.

One may have:

• Low debt
• Strong rental income
• Significant cash reserves
• A long investment timeframe

Another may have:

• High leverage
• Negative cash flow
• Limited savings
• Significant refinancing requirements

The same property market affects both investors, but their financial exposure is very different.

Is Property Still Worth Holding If Interest Rates Stay High?

It can be, depending on the fundamentals.

A higher-rate environment does not automatically mean every property investment should be sold.

Instead, investors should ask whether the property continues to meet their objectives.

Consider:

Does the rental income justify the costs?

Can you comfortably service the debt?

Is the property in an area with sustainable tenant demand?

Are you relying too heavily on future capital growth?

What are the tax implications of holding or selling?

Would another investment provide a better return for the risk and capital involved?

These questions are more useful than attempting to predict exactly where interest rates or property prices will go next.

The Importance of Reviewing Your Property Investment Strategy

Interest rates can change the economics of an investment property significantly.

An investment that worked when borrowing costs were low may look very different when rates remain elevated.

That does not necessarily mean the investment has failed.

It means the assumptions behind the investment should be reviewed.

For property investors, this is where professional accounting and tax advice can become valuable. Understanding cash flow, deductions, ownership structures, debt and potential tax consequences can help you assess your position more clearly.

At Latitude Accountants, we work with individuals and business owners on accounting, tax and advisory matters, helping clients make informed decisions as economic conditions change.

Frequently Asked Questions About Property Investment and Higher Interest Rates

What happens to an investment property when interest rates rise?

Higher rates generally increase borrowing costs, which can reduce investment-property cash flow and borrowing capacity. The impact depends on the loan balance, rental income and overall property expenses.

Will higher interest rates cause property prices to fall?

Higher rates can reduce borrowing capacity and property demand, which can place downward pressure on prices. However, property prices are influenced by many other factors, including supply, employment, population growth and credit conditions.

Is negative gearing still useful when interest rates are high?

Negative gearing may still provide tax benefits where applicable, but investors should remember that a tax deduction does not eliminate the underlying cash loss from holding a negatively geared property.

Should I sell my investment property if interest rates remain high?

Not necessarily. The decision should consider cash flow, debt, tax consequences, rental demand, investment objectives and the property’s long-term fundamentals.

How can I protect my property investment from higher interest rates?

Investors can review their loan structure, maintain appropriate cash reserves, monitor rental income, reduce unnecessary expenses and regularly stress-test their cash flow.

How long can interest rates stay high?

There is no reliable fixed timeframe. Interest rates are determined by monetary policy and economic conditions, including inflation, employment and economic activity. Investors should therefore assess whether their property remains sustainable without relying on a quick return to lower rates.

Need Help Reviewing Your Property Investment?

Higher interest rates can change the financial position of an investment property significantly.

If you need help understanding the tax, accounting or financial considerations around your property investment, Latitude Accountants can help.

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Enquire with Latitude Accountants to discuss your accounting, tax or advisory needs.

Disclaimer

This article provides general information and commentary only and does not constitute financial, tax, property, investment or business advice. Interest rates and property values can change, and investment outcomes are not guaranteed. Tax treatment depends on individual circumstances and applicable legislation. Speak with a qualified adviser about your own circumstances before making financial, property or investment decisions.