A fixed rate on an investment loan feels like protection from rising costs. But the features that look helpful at approval can create expensive problems when your circumstances or the property market shifts.
Fixed Rates Work Differently on Investment Loans
Most lenders treat fixed rate investment loans as higher-risk products than owner-occupied fixed loans, which means tighter conditions even when the advertised rate looks competitive. The loan contract will usually cap your extra repayments at $10,000 to $30,000 per year during the fixed period, and some lenders block extra repayments entirely. If you fix the entire loan amount and your tenant pays reliably for two years, you cannot use that surplus rental income to pay down the principal without triggering break costs. The loan balance stays exactly where it started.
Consider an investor who fixes a $600,000 loan on a townhouse near Merewether Beach at 5.89 per cent for three years. Rental income covers most of the interest, and after 18 months the investor receives an inheritance of $80,000. Paying that lump sum against the loan would incur break costs calculated on the difference between the fixed rate and the lender's current wholesale funding cost for the remaining term. If wholesale rates have fallen, the break cost could exceed $15,000. The investor ends up holding the cash in an offset account that does nothing, because the fixed loan does not allow offsets.
What Happens When You Need to Sell During the Fixed Period
If you sell the property before the fixed term ends, most lenders will charge a break cost on the full outstanding loan balance at settlement. The cost is not capped and cannot be negotiated after the fact. It is calculated using a formula based on wholesale interest rate movements and the time remaining on your fixed term, and it can run into tens of thousands of dollars on a typical Newcastle investment property.
An investor who purchased a two-bedroom unit in The Junction in early 2024 and fixed at 6.19 per cent for five years may now face a situation where strong rental demand has pushed local unit values up, but their work circumstances have changed and they need to liquidate the asset. With three years remaining on the fixed term and wholesale rates lower than when they locked in, the break cost on a $520,000 loan could exceed $25,000. That cost is deducted from the settlement proceeds and reduces the actual return on the investment, sometimes wiping out years of capital growth.
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Split Loans Give You an Exit Without Paying to Use It
A split loan structure puts part of your borrowing on a fixed rate and part on a variable rate with an offset account. The variable portion accepts unlimited extra repayments and full redraw at any time, and the offset account reduces the interest charged on that portion daily. If rental income exceeds expectations or you receive a lump sum, you direct it into the offset account and immediately reduce your interest cost without triggering any break fees.
In our experience, Newcastle investors who split their loans 50/50 or 60/40 between fixed and variable retain enough flexibility to respond when the property or their financial position changes. If you need to sell, you repay the variable portion at settlement without penalty and only pay break costs on the fixed portion, which might be half the original loan amount. If rates fall and you want to refinance, you can move the variable portion to a new lender without waiting for the fixed term to end, then decide whether to break the fixed portion or leave it in place until expiry.
Interest-Only Periods Lock You Into a Repayment Structure You May Not Want Later
Most investment loans offer an interest-only period of one to five years, and many investors choose this option to maximise their negative gearing deductions and keep repayments low. When you combine interest-only with a fixed rate, you are committing to a repayment structure that cannot be changed until the fixed term expires. If your income increases or the property performs well and you want to start paying down principal to build equity, you cannot switch mid-term without breaking the fixed rate contract.
From the 2027-28 income year, new tax rules apply to established residential investment properties purchased after 12 May 2026. Losses on those properties can only be offset against other residential property income, not against salary or wages. Investors who fixed their loans on interest-only terms before understanding the new rules may find they are locked into a structure that no longer delivers the tax outcome they planned for, and switching to principal-and-interest repayments early would mean paying break costs.
Rate Discounts Disappear When the Fixed Term Ends
When your fixed rate expires, the loan automatically reverts to the lender's standard variable rate for investment loans unless you take action. The standard variable rate is typically 0.80 to 1.50 percentage points higher than the discounted variable rates available to new customers or borrowers who actively refinance. Lenders do not contact you in advance to offer a better rate. The reversion happens silently at the end of the fixed period, and your repayments increase without warning unless you have been monitoring the fixed rate expiry date.
We regularly see this with Newcastle investors who fixed three or four years ago and have not reviewed their loan since. The fixed term ends, the loan reverts to a standard variable rate above 7 per cent, and the investor continues paying that rate for months before realising they are now paying significantly more than they would on a new fixed or discounted variable product. By the time they contact us, they have already lost thousands of dollars in unnecessary interest. The solution is to review your loan at least three months before the fixed term ends and either negotiate a new rate with your current lender or refinance to a new lender offering a discount.
Portability Is Rarely Available on Fixed Investment Loans
If you sell your current investment property and purchase a different one during the fixed period, most lenders will not allow you to transfer the existing fixed rate loan to the new property. You must repay the old loan at settlement, which triggers break costs, then apply for a new loan on the new property at whatever rate is available at that time. The fixed rate you locked in two years ago does not move with you, even if you stay with the same lender.
This restriction catches investors who are actively building a portfolio or who want to trade up from a unit to a house in suburbs like Kotara or Adamstown. The lack of portability means every property transaction during the fixed period becomes a financing decision as well as an investment decision, and the break costs feed directly into the feasibility of the trade.
Call one of our team or book an appointment at a time that works for you. We will walk through your current loan structure, calculate what a fixed term or a split would actually cost over the full term, and make sure the product fits the way you plan to use the property and the equity in it.
