Avoid These 5 Investment Loan Comparison Mistakes

Comparing Advertised Rates Without Checking Actual Borrowing Capacity

The advertised rate is almost never the rate you receive. Lenders price investor loans based on risk weight, which changes with your deposit size, loan purpose and whether you are taking interest-only repayments.

Consider a business owner refinancing an existing rental property with 30 per cent equity. One lender offers a rate that looks lower on paper, but only at 80 per cent LVR with principal and interest repayments. Switching to interest-only increases the rate by 0.40 per cent. A second lender prices interest-only at only 0.15 per cent above their standard variable rate and allows a higher LVR without Lenders Mortgage Insurance because they treat your business income differently under their serviceability policy. The second lender ends up cheaper on a like-for-like basis and preserves more cash flow.

Another factor is the DTI limit that came into effect in February. Lenders can only write 20 per cent of new investor loans to borrowers with total debt above six times income. If you are already at or near that threshold, some lenders will decline outright while others have structured their policy to still lend but at a higher rate or lower LVR. Knowing which lenders assess business income as recurring rather than discretionary income can make the difference between approval and decline, regardless of the advertised rate.

Ignoring Whether the Loan Allows Equity Release for Your Next Purchase

You are not buying one property in isolation. Most business owners building a portfolio want to use equity in the first property to fund the deposit on the second without selling or injecting new cash.

Not all lenders allow you to increase your investment loan limit after settlement to access equity. Some cap any future increase at the original purchase price plus documented renovation costs, which means capital growth is locked until you refinance. Others allow you to redraw only on principal and interest loans, not interest-only loans, which removes the main cash flow benefit of interest-only in the first place.

In a scenario where a business owner purchased a property two years ago and it has increased in value, they apply to their existing lender to release equity for a second deposit. The lender agrees but requires them to switch the entire loan to principal and interest and revert to a higher rate because the new borrowing pushes their total exposure above a portfolio threshold. They end up refinancing both loans to a lender that treats subsequent equity release as a separate split, leaving the original loan on interest-only at the existing rate. That refinance cost them four weeks and a discharge fee, but it would have cost nothing if they had chosen a lender with flexible equity access in the first place.

Overlooking Offset and Redraw Restrictions on Interest-Only Loans

Most borrowers assume that offset accounts and redraws work the same way across all lenders. They do not, particularly on investment loans.

Some lenders do not offer offset accounts on interest-only investment loans at all. Others offer a partial offset that only reduces the interest charged, not the balance used to calculate your LVR or serviceability buffer when you apply for your next loan. A full offset reduces both. If you are holding cash in your business or personal accounts and want to park it against the loan to reduce interest while keeping it accessible, a partial offset is not enough.

Redraw works differently again. Even where redraw is available on an investment loan, some lenders take three to five business days to process a redraw request and may charge a fee per withdrawal. If you need access to surplus funds quickly for a business expense or settlement on another property, that delay becomes a problem. A transaction account offset gives you instant access and does not require lender approval for each withdrawal.

We regularly see business owners who compared loans on rate and LVR but did not check offset availability. Six months later they are sitting on $80,000 in a business transaction account earning minimal interest when they could have saved several thousand dollars in non-deductible mortgage interest by moving that cash into a full offset account linked to their owner-occupied loan and using the freed-up cash flow to service the investment loan interest.

Choosing a Fixed Rate Without Understanding Break Costs on Investment Loans

Fixed rates on investment loans are priced higher than variable rates and carry break costs if you exit early, refinance, or make a lump sum repayment above the allowed threshold. Break costs are calculated on the difference between your fixed rate and the wholesale rate the lender can now earn by reinvesting your repayment. When rates have fallen, that difference is significant.

A business owner fixes an interest-only investment loan at a rate that seemed attractive at the time. Eighteen months later, market rates have dropped and they want to refinance to access equity for a second purchase. The lender calculates a break cost based on the remaining term and the rate differential. The cost is $14,000. The business owner proceeds because the savings on the new loan and the value of accessing equity outweigh the break cost, but the cost would have been zero if they had split the loan 50/50 between fixed and variable, keeping the equity access portion on variable with no break cost and fixing only the amount they wanted rate certainty on.

Some lenders allow partial release of fixed rate securities without triggering a full break cost, while others calculate the break cost on the entire fixed balance even if you are only refinancing one property out of three. That difference matters when you are managing a portfolio and want to keep some holdings while selling or refinancing others. Comparing investment loan products means reading the fixed rate terms in the loan contract, not just the rate itself.

Selecting a Loan That Does Not Suit Your Tax Structure or Negative Gearing Position

Your loan structure and your tax structure need to align. Borrowing in your personal name when you should be borrowing through a trust, or vice versa, has tax and asset protection consequences that a lower rate does not fix.

Under current law, interest on an investment loan is deductible against your assessable income as long as the property is rented or genuinely available for rent. If you bought the property before May last year, you can continue to offset any loss against your salary, business income or other sources. If you bought after that date and the property is not a new build, losses from the 2027-28 income year onward can only be offset against other residential property income, and excess losses are carried forward.

Some lenders are more flexible than others when lending to a trust or company structure. Others price trust borrowing higher or require all beneficiaries and directors to guarantee the loan, which can affect your personal borrowing capacity for future purchases. If you plan to hold multiple properties or you want asset protection, comparing loans without considering which lender will accommodate your structure leads to a refinance six months later when your accountant tells you the loan is in the wrong name.

Another issue is how the lender treats rental income. Some lenders will assess 80 per cent of rental income as serviceability, which is meant to account for vacancy and management costs. Others assess 100 per cent if you provide a lease and property management agreement. That difference changes how much you can borrow. If you are relying on rental income to service the new loan and support your next purchase, you need a lender that recognises that income at a level that reflects your actual tenancy and location. Comparing investment loan options means comparing serviceability policy, not just the interest rate or LVR.

Most business owners we work with have multiple income sources, existing debt and plans to acquire more property. The loan that looks cheapest today becomes the most expensive if it blocks your next move, restricts your equity access, or does not align with the tax treatment your accountant has structured. Call one of our team or book an appointment at a time that works for you.

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