Why Should Yarralumla Investors Consider a Variable Rate?

A variable rate investment loan suits Yarralumla investors who want flexibility and are prepared for repayments that can rise or fall. The decision comes down to how much movement your cash flow can absorb.

Yarralumla is a quiet suburb near Government House and the shores of Lake Burley Griffin. Investors generally weigh up holding costs against long-term returns. The rate structure you choose has a direct effect on those costs.

What Is a Variable Rate Investment Loan?

A variable rate investment loan has an interest rate that your lender can change over time. Your repayments move with it, so they can rise or fall during the loan term.

The RBA cash rate is currently 4.85% p.a., and lenders consider it when they set their own rates. Your actual rate depends on your lender, your deposit size and the loan structure. Our investment loans page explains the main structures, and a broker can compare lenders across Australia for you.

The main trade-off is certainty. A fixed rate locks in your repayment for a set period. A variable rate does not, so you need room in your budget for increases.

How Much Can a Rate Rise Change Your Repayments?

Each 1 percentage point rise adds about $6,000 a year in interest for every $600,000 borrowed, or about $500 a month. The effect is the same size on an interest-only loan.

Consider an investor in Yarralumla who borrows $600,000 on a variable rate investment loan. At an illustrative rate of 6.75% p.a., interest-only repayments are $3,375 a month. If the rate rises by 1 percentage point to 7.75%, the repayment becomes $3,875 a month.

This investor expected rent to cover most of the repayment. They planned for movement by keeping a cash buffer in an offset account linked to the loan. The buffer reduces the interest charged, and it can be used to cover a higher repayment or a gap between tenants. The outcome was a $500 monthly increase absorbed without selling the property or changing the loan.

The trade-off is that an offset account is only useful if you keep money in it. Fees and rates on loans with offset accounts also vary by lender, so compare the full cost of the product.

Interest Only or Principal and Interest on a Variable Rate?

Interest-only repayments are lower in the short term, but you do not reduce the loan balance during that period. Principal and interest repayments cost more each month and gradually pay the loan down.

Using the same illustrative rate of 6.75% p.a. on $600,000 over 30 years, principal and interest repayments are about $3,892 a month. That is roughly $517 more than the interest-only repayment of $3,375.

If you choose an interest-only period, the later repayments will be higher. They are spread over the shorter remaining term, so a 5-year interest-only period on a 30-year loan leaves 25 years to repay the principal. Lenders assess your borrowing on the same basis. APRA expects them to test repayments over the remaining term, so an interest-only feature does not increase how much you can borrow.

For tax, interest on a loan used to buy or hold a rental property is generally deductible while the property is rented or available for rent. Only the interest part of a principal and interest repayment is deductible. The principal part is not. Speak with your accountant about how this applies to you.

How Do Lenders Assess Your Borrowing for an Investment Loan?

Banks must assess your ability to repay at a rate at least 3 percentage points above the loan rate. At the illustrative rate of 6.75% p.a., that means testing repayments at 9.75% p.a.

This buffer applies to new borrowers at banks and other ADIs, whether the loan is fixed or variable. Lenders also count only part of your expected rent. APRA's guidance is that prudent lenders count no more than 80% of expected rent, to allow for vacancy.

Your existing debts, credit card limits and living costs all reduce what a lender will offer. You can get a starting figure from our borrowing capacity page. A broker can then test how different lenders treat your rental income and other debts.

One point to keep in mind is that a deposit above 20% of the property value generally avoids lenders mortgage insurance (LMI). Borrowing above that level needs approval from both the lender and the insurer. LMI is paid by the borrower, so it adds to your upfront cost.

How Do the Negative Gearing Changes Affect Your Loan Choice?

The tax treatment of rental losses depends on when you bought the property. Losses on residential investment properties held at 7:30pm AEST on 12 May 2026 remain deductible against other income, including salary, until the property is sold.

For established residential properties bought after that time, a different rule applies from the 2027-28 income year. Net rental losses can only be used against other residential property income, including capital gains on residential property. Excess losses can be carried forward. Eligible new builds keep the current treatment.

These changes do not affect the deductibility of interest itself. They change how a net rental loss can be used. This makes your cash flow more important, because a variable rate rise could increase a loss that you can no longer offset against your wage. Your accountant can model this for your situation.

When Should You Review or Refinance a Variable Rate Loan?

Review your variable rate investment loan whenever your rate, your rent or your goals change. A broker can compare your current loan against other lenders, because variable rates and discounts differ between lenders.

A loan health check is a sensible first step. If a comparison shows a lower rate or more suitable features elsewhere, refinancing may be worth considering. Weigh this against any discharge fees, application costs and a possible valuation fee, which vary by lender. If you are coming off a fixed term, our fixed rate expiry page covers your options.

If you own in Yarralumla or are planning a purchase, our Yarralumla mortgage broker page has local contact details. Call one of our team or book an appointment at a time that works for you, and we will compare variable rate investment loan options against your cash flow and goals.

Frequently Asked Questions