Top Strategies to Match Your Investment Loan to Your Goals

Your investment loan should be built around what you want the property to do for you, not around the lowest repayment on offer.

If you rent where you want to live and buy elsewhere, a rentvesting approach gives you more choice about location. It also means the loan has to carry real weight, because you are paying rent and a mortgage at the same time. Getting the structure right at the start saves you from a costly restructure later.

How Do Property Investment Goals Shape Your Investment Loan?

Your goal decides the loan features you need. Someone chasing cash flow needs different loan settings from someone aiming for long-term portfolio growth.

It helps to name your main goal before you talk to a lender. Common goals include keeping holding costs low, paying the loan down faster, or freeing up equity for a second purchase. Each one points to a different mix of repayment type, offset account and loan split. Our rentvesting strategy page walks through how to define yours.

Interest-Only or Principal and Interest: A Worked Example

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 steadily cut the debt.

Consider a Melbourne renter who borrows $500,000 for an investment property. This is an illustrative example using a rate of 6.75% p.a., not a current offer. On interest-only, the repayment is about $2,813 a month. On principal and interest over 30 years, it is about $3,243 a month, roughly $430 more.

The investor chooses a five-year interest-only investment loan to keep cash flow comfortable while they save. After five years, the loan reverts to principal and interest over the remaining 25 years. At the same illustrative rate, the repayment becomes about $3,454 a month. That is about $211 a month more than if they had started on principal and interest over 30 years, and the full $500,000 is still owing.

The outcome is a clear trade. The investor gains about $430 a month for five years, then pays a higher repayment and carries a larger balance. For that reason, a lender will assess your borrowing on the principal and interest repayment over the shorter remaining term. An interest-only feature does not lift your borrowing capacity.

What Determines Your Investment Loan Amount?

Your investment loan amount depends on your income, existing debts, expenses and the lender's policy. Banks must also test your ability to repay at a rate at least 3.0 percentage points above the loan rate.

That buffer applies to authorised deposit-taking institutions such as banks, credit unions and building societies. Non-bank lenders are not bound by it. Lenders also count only part of your expected rent. APRA's view is that prudent policies include at least a 20 per cent haircut, so no more than 80 per cent of the rent is counted. Our rental income assessment page explains how lenders treat rent. You can also check where you stand with the borrowing capacity tool.

Is a Low Deposit Investment Loan Worth It?

Borrowing above 80% of the property's value usually means paying Lenders Mortgage Insurance (LMI). That cost lets you buy sooner, but it adds to your debt and your holding costs.

The 80% loan to value ratio (LVR) is the point where LMI is generally required. It is not a legal borrowing limit. Lenders and LMI insurers each set their own rules above that line. If your investor deposit is small, read our guide to lenders mortgage insurance for investors before you commit. The trade-off is simple: a smaller deposit gets you into the market sooner, but you carry a bigger loan.

How Do Offset Accounts Fit an Investment Strategy?

An offset account reduces the balance your interest is charged on, while the loan balance itself stays the same. It can suit investors who want to hold cash nearby and still cut interest costs.

Because less interest is charged, the interest you can claim as a deduction is also lower. Saving interest and claiming interest are not the same thing, so do not treat the offset as a free win on tax. Offset features and fees vary between lenders, and some loans charge more for the feature. See how they work on our offset accounts on investment loans page.

How Do Tax Rules Affect Your Investment Property Finance?

Interest on money borrowed to buy a rental property is generally deductible while the property is rented or available for rent. Only the interest part of a repayment is deductible, not the principal.

Negative gearing rules have changed. Net rental losses on residential properties you held at 7:30pm AEST on 12 May 2026 can still be deducted against other income, including wages. Losses on eligible new builds can also still be deducted against other income. From the 2027-28 income year, losses on established residential properties bought after that time can only be used against other residential property income. Unused losses can be carried forward. The capital gains tax discount is also set to change from 1 July 2027. These changes can shift which property type suits your goals, so look at negative gearing for rentvestors and new build rentvesting. Speak with your accountant about how the rules apply to your situation, because outcomes depend on your circumstances.

When Should You Refinance or Use Equity?

Refinancing makes sense when your loan no longer fits your goal, for example when your rate has drifted above what other lenders offer for your profile. Using equity can fund your next purchase, but it raises your debt.

Before switching, weigh up discharge fees, valuation costs and any fixed rate break costs. If you plan to draw equity, the use of the funds matters. Borrowed money used for private purposes is not deductible, even if the security is an investment property. Our investment loan refinancing page covers what to check first.

If you are a Victorian investor ready to line up your loan with your goals, call one of our team or book an appointment at a time that works for you. We will compare options from lenders across Australia and build a structure around what you want your property to achieve.

Frequently Asked Questions