Fixed Rate Terms for Investment Loans and How to Choose

A fixed rate term on an investment loan locks your rate for a set period, usually between one and five years.

The term you choose affects whether you can access offset accounts, make extra repayments, or refinance without break costs. It also determines how often you're exposed to rate changes. Investors who hold property through economic cycles often need different terms than those planning to sell or refinance within a few years.

How Fixed Rate Terms Affect Flexibility and Cost

Shorter fixed terms give you more flexibility to refinance or adjust your loan structure without significant break costs. Longer terms lock in rate certainty but limit your ability to respond to changing circumstances.

Consider a property investor who refinanced an established apartment in late 2025 and chose a three-year fixed term at 5.8%. During that period, rental income covered most of the interest, and the investor avoided rate increases when variable rates climbed. When the fixed term expired, they switched to a variable rate and gained access to an offset account, which they used to park rental income and reduce taxable interest. The three-year term allowed them to benefit from rate certainty while still exiting before major portfolio changes were needed.

Most lenders charge break costs if you exit a fixed rate early, calculated using the difference between your fixed rate and current wholesale rates. A five-year fixed term locked in during a low rate environment can trigger substantial break costs if you need to sell or refinance when rates have fallen. A two-year term reduces that risk but offers less protection if rates rise sharply.

Matching Fixed Terms to Your Investment Strategy

Your fixed rate term should align with when you expect to review or change your loan structure. If you're planning to leverage equity within two years, a short fixed term avoids locking you into a product that penalises early exit.

Investors who plan to hold a property long term and want predictable repayments often choose three to five-year terms. Those using interest only loans to maximise cash flow during the interest-only period may prefer a fixed term that matches the interest-only window, avoiding a situation where the loan reverts to principal and interest while still fixed at a higher rate.

Property investors who intend to expand their portfolio within a short window often split their loan, fixing part for two years and leaving the rest variable. This allows them to refinance or release equity on the variable portion without break costs, while still holding some rate certainty on the fixed portion.

Fixed Rate Terms and Interest Only Periods

Many investors fix their rate during an interest only period to lock in lower repayments and predictable cash flow. The challenge arises when the fixed term expires before the interest only period ends, or when the interest only period expires while the rate is still fixed.

If your interest only period ends while you're still locked into a fixed rate, your repayments automatically switch to principal and interest at the fixed rate. You can't negotiate an extension or switch back to interest only without breaking the fixed term. Investors who want to extend their interest only period need to either time the fixed term to expire before the interest only window closes, or accept that they'll be making higher repayments until the fixed term ends.

Lenders typically allow interest only periods of up to five years on investment loans, and some will extend this to ten years for investors with strong equity positions. Matching your fixed term to the length of your interest only period avoids the situation where you're forced into higher repayments before you're ready to refinance.

Split Loans and Fixed Term Structures

Splitting an investment loan between fixed and variable portions allows you to hold rate certainty on part of the debt while keeping flexibility on the rest. Each portion can have a different fixed term, giving you control over when each part reverts to variable.

In our experience, investors who split their loan often fix 50% to 70% of the balance for two or three years and leave the remainder variable. The variable portion can be paid down faster, linked to an offset account, or refinanced without triggering break costs. The fixed portion provides a buffer against rate increases and keeps a predictable portion of your repayments stable.

Some lenders allow you to fix multiple portions with different terms. You might fix $200,000 for two years, another $200,000 for three years, and keep $100,000 variable. As each fixed portion expires, you can reassess whether to refix, switch to variable, or adjust the split based on current market conditions and your investment plans.

Fixed Rate Terms and the 2027 Tax Changes

From 1 July 2027, negative gearing and capital gains tax treatment will change for established residential properties purchased after 12 May 2026. These changes don't affect the mechanics of fixed rate terms, but they do influence how investors think about holding periods and exit timing.

Investors who bought established property after Budget night and plan to sell before the new tax rules take effect may prefer shorter fixed terms that allow them to refinance or exit without break costs. Those holding long term under the new arrangements may still benefit from longer fixed terms if they want stable repayments while carrying forward deductions against future rental income.

New builds remain exempt from the negative gearing changes and retain a choice between the old and new capital gains tax treatment. Investors in new builds who expect strong capital growth may prefer longer fixed terms to lock in repayments during the construction and early holding phase, particularly if they're using construction loans or house and land packages.

When to Avoid Long Fixed Terms

Long fixed terms reduce flexibility and expose you to higher break costs if your circumstances change. Investors who are separating, restructuring debt, or planning to access equity should generally avoid fixing for more than two years.

If you're likely to need investment loan refinancing within the fixed term, the savings from a lower fixed rate are often wiped out by break costs when you exit. We regularly see this with investors who fixed for five years during a rate dip, then needed to refinance to access equity or consolidate debt before the term expired.

Fixed rate products also tend to have fewer features than variable loans. Most don't offer offset accounts, limit extra repayments to a small annual amount, and don't allow redraw on any additional payments. If you need flexibility to adjust repayments or park rental income in an offset, a variable rate or short fixed term is usually more suitable.

Choosing a Fixed Term That Fits Your Timeline

Start with your expected holding period and any major changes you anticipate in the next few years. If you're planning to sell, refinance, or release equity within two years, a one or two-year fixed term keeps your options open. If you're holding long term and want stable repayments, a three to five-year term offers more certainty.

Consider the trade-off between rate certainty and flexibility. A longer fixed term protects you from rate increases but limits your ability to respond to changes in your financial situation, property market conditions, or tax treatment. A shorter term or split structure gives you more control over when you exit or adjust your loan.

If you're unsure about your timeline or need flexibility to access equity for future purchases, a split loan with staggered fixed terms is often the most practical approach. It gives you a portion of stable repayments without locking your entire loan into a single term that may not suit your plans.

Call one of our team or book an appointment at a time that works for you. We'll walk through your investment timeline, repayment preferences, and property plans to identify the fixed term structure that supports your goals without locking you into unnecessary restrictions.

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