What are Rate Lock-ins and Break Costs on Investment Loans?

What Is a Rate Lock-in on an Investment Loan?

A rate lock-in is a fixed interest rate period during which your lender holds your investment loan interest rate steady, regardless of what happens to the broader market. Once you lock in a rate, usually for one to five years, your repayments stay consistent for that period, which can make budgeting rental income and expenses more predictable.

Most investors who fix a portion of their borrowing do so to protect themselves against rising rates during periods of uncertainty. At the time you lock in, your lender commits to that rate, and in return, you commit to leaving the loan in place under those terms until the fixed period ends. That commitment is where break costs come into play.

How Fixed Rate Investment Loans Differ from Variable Loans

Variable rate loans adjust in line with your lender's movements, which tend to follow the Reserve Bank's cash rate changes and the lender's own funding costs. Fixed rate loans, by contrast, are priced using wholesale funding markets at the time you lock in. Your lender is effectively hedging that rate for you, and if you leave early, they may be left holding a position that no longer matches their funding arrangements.

Consider a property investor who locked in a three-year fixed rate on a loan amount of $600,000 at 5.8 per cent in late 2024, when wholesale funding costs were higher. By mid-2026, variable rates had dropped and the investor wanted to refinance to a lower variable rate with another lender. Because the lender had hedged that fixed rate based on higher wholesale costs, exiting early meant the lender faced a loss on the funding swap. That loss is passed to the borrower as a break cost.

In this scenario, the break cost was calculated at around $14,000. The investor chose to stay with the existing lender until the fixed term expired, then refinanced without penalty. If rental income had dropped or a financial hardship situation had emerged, the calculation might have looked different, but in this case the numbers didn't support an early exit.

What Are Break Costs and How Are They Calculated?

Break costs are the fee your lender charges when you exit a fixed rate loan before the agreed term ends. The fee compensates the lender for the difference between the rate you locked in and the rate they can now lend or invest that money at in the wholesale market.

The calculation involves comparing your fixed rate to the lender's current wholesale funding cost for the remaining term. If wholesale rates have fallen since you locked in, the lender faces a funding mismatch and charges you the difference. If wholesale rates have risen, there may be no break cost at all, and in some cases lenders will waive any break cost because they can redeploy your funds at a higher rate.

Most lenders use a formula based on the remaining loan balance, the remaining fixed term, and the movement in wholesale swap rates since your lock-in date. Some lenders also factor in an administrative fee. The actual amount can range from zero to tens of thousands of dollars depending on how far rates have moved and how much time remains on your fixed period.

You won't know the exact break cost until you request a payout figure from your lender. That figure is valid for a set period, usually between seven and thirty days, because wholesale rates move daily. If you're considering refinancing an investment loan before your fixed term ends, ask your lender or broker to obtain a break cost estimate before you commit to a new loan application.

When Break Costs Apply and When They Don't

Break costs apply when you repay your fixed rate loan in full, switch to a different loan product with the same lender, or refinance to another lender before the fixed period expires. They also apply if you make additional repayments beyond the annual limit set in your loan contract, which is typically between $10,000 and $30,000 per year on investment loans.

They do not apply when your fixed period ends and you roll onto a variable rate or refix at a new rate. They also do not apply to the variable portion of a split loan, which you can repay or refinance at any time without penalty. Some lenders waive break costs in specific hardship situations, such as death, serious illness, or sale due to unemployment, but these waivers are discretionary and depend on the lender's policy and your individual circumstances.

If you sell the investment property during a fixed rate period, break costs will usually apply unless the sale is forced by genuine hardship and the lender agrees to waive them. The break cost is deducted from the loan payout amount at settlement.

Should You Fix Part or All of Your Investment Loan?

Most property investors on the Gold Coast, particularly around Southport, Bundall and Surfers Paradise where apartment supply is high and vacancy rates can shift quickly, choose to split their borrowing between fixed and variable rather than locking in the full loan amount. A split structure gives you rate protection on part of the loan while keeping flexibility on the rest.

A common approach is to fix 50 to 70 per cent of the loan for two to three years and leave the remainder on a variable rate. The variable portion lets you make extra repayments without penalty, redraw if needed, and access offset account features that aren't usually available on fixed rate products. If you decide to sell or refinance, you're only exposed to break costs on the fixed portion, which can make the exit cost more manageable.

Some investors fix a smaller portion, around 30 to 40 per cent, if they expect rates to fall or if they want the flexibility to increase their loan for future property purchases. Others fix the full amount if they want certainty on cash flow and don't anticipate any changes to their investment strategy during the fixed term. Your decision should be based on your cash flow needs, your view on interest rate movements, and how long you intend to hold the property.

How Rate Changes Since 2024 Have Affected Investors

Investors who locked in fixed rates during 2023 and early 2024, when rates were climbing, have generally faced higher break costs if they've tried to exit early. Those who fixed at rates above 6 per cent and then sought to refinance in 2026, when variable rates had softened, found that the gap between their locked rate and current wholesale funding created significant break cost exposure.

In contrast, investors who fixed in late 2021 or early 2022 at rates below 3 per cent and held those loans until the fixed term expired avoided break costs entirely and benefited from below-market rates for the duration of the fixed period. Timing matters, but no one can predict rate movements with certainty. The decision to fix should be driven by your need for repayment certainty rather than trying to pick the bottom of the rate cycle.

For investors holding properties in areas like Robina or Nerang, where rental demand from families and long-term tenants is more stable, fixing part of the loan can provide breathing room during vacancy periods without the repayment shock that comes with variable rate increases. For those holding units in high-density precincts like Surfers Paradise, where short-term rental income can fluctuate, keeping a larger variable portion may offer more flexibility to adjust your loan structure as your income changes.

What Happens at the End of a Fixed Rate Period?

When your fixed rate period ends, your loan automatically rolls onto your lender's current variable rate unless you contact them to refix or refinance. The revert rate is usually higher than the variable rate offered to new borrowers, so it's worth reviewing your options at least a month before the fixed term expires.

You can refix with your current lender at a new rate, switch to a variable product, or refinance to another lender. Once the fixed period ends, there are no break costs regardless of which option you choose. If you've been on a fixed rate for several years, it's also worth checking whether your loan structure still suits your situation. You may now have enough equity to remove Lenders Mortgage Insurance on a refinance, or you may want to release equity for a deposit on another investment property.

If you're approaching the end of a fixed term and you're not sure what to do next, digilend can run a loan health check to compare your current loan against what's available in the market and help you decide whether to stay, refix, or move.

Give one of our team a call or book an appointment at a time that works for you. We'll walk through your current loan structure, explain what your options are at the end of your fixed term, and help you avoid break costs if you're thinking about making a change before then.

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