Fixed Rate Investment Loans: What to Lock In

What a Fixed Rate Loan Term Means for Your Investment Property

A fixed rate term locks your interest rate for a set period, usually between one and five years. During that period, your repayment amount stays the same regardless of what happens to variable rates across the market.

For investors in Sandy Bay, where property values have held steady and rental demand from University of Tasmania students remains consistent, the decision between fixing for two years or five years changes how much flexibility you keep as your circumstances shift. A shorter fixed term means you can refinance or access equity sooner. A longer fixed term protects you from rate rises but limits your options if you want to sell, renovate, or adjust your loan structure before the term ends.

Consider an investor who purchased a two-bedroom unit near the Sandy Bay waterfront in early 2026. At the time, variable rates sat around 6.2 per cent and two-year fixed rates were offered at 5.8 per cent. The investor chose a two-year fix on an interest-only loan. Rental income covered the repayments comfortably, and the shorter term meant that when the fixed period expired in 2028, they could refinance the investment loan to access equity for a second property without paying break costs. Had they fixed for five years, exiting early to access equity would have triggered a break cost in the tens of thousands.

How Fixed Rate Terms Interact with Interest-Only Periods

Most investment loans offer an interest-only period of up to five years. If you fix your rate, the fixed term and the interest-only period do not have to align, but aligning them avoids a situation where your loan switches to principal and interest repayments while you are still locked into a fixed rate.

If your interest-only period ends before your fixed term, your repayments will increase because you will start paying down the loan balance. That increase happens automatically. You cannot extend the interest-only period mid-fix without refinancing, and refinancing during a fixed term usually means paying break costs.

For a Sandy Bay investor with a loan amount of around the median unit price, the difference between interest-only and principal-and-interest repayments could be several hundred dollars per month. If rental income only just covers the interest-only repayment, that jump can turn a neutrally geared property into a negatively geared one overnight.

One-Year Fixed Terms and When They Make Sense

A one-year fixed rate is the shortest term most lenders offer. It gives you a small buffer against rate rises without locking you in for long. The rate is usually lower than longer fixed terms because the lender is taking on less interest rate risk.

This term works if you expect rates to fall within the next 12 to 18 months, or if you plan to sell or refinance in the near future but want short-term certainty. It also suits investors who want to test a fixed rate without committing to a longer term.

The downside is that you will need to make a decision again in 12 months. If rates have risen by then, you may end up fixing again at a higher rate or moving to a variable rate that is more expensive than what you initially locked in. One-year fixed terms require active management and are not suited to investors who prefer to set and forget.

Two-Year and Three-Year Fixed Terms for Balanced Flexibility

Two-year and three-year fixed terms are the most commonly chosen by property investors because they balance rate certainty with flexibility. At current settings, these terms often carry the most competitive investor interest rates.

In Sandy Bay, where many investors hold properties for medium-term capital growth rather than flipping quickly, a two or three-year fix allows you to lock in a rate during a stable period and reassess your strategy before the next wave of regulatory or tax changes takes effect. With new negative gearing rules applying from 1 July 2027 to properties acquired after May 2026, investors who purchased recently may want the option to refinance or restructure before those rules fully bed in.

A three-year fixed term also aligns neatly with a typical interest-only period if you set both to expire at the same time. That way, when the fix ends, you can choose to refix, switch to variable, extend the interest-only period, or refinance altogether without any mid-term complications.

Five-Year Fixed Terms and the Trade-Off You Accept

A five-year fixed rate offers the longest protection against rate rises. If you believe rates will increase over the next few years and you want to lock in today's rate, this is the term that gives you the most certainty.

The trade-off is lack of flexibility. Break costs on a five-year fix can be substantial if you need to exit early, and most lenders will not let you make large extra repayments or access a redraw facility during the fixed period. For investors, that means you cannot easily draw on equity to fund a renovation, cover an extended vacancy, or purchase a second property without refinancing and paying the break cost.

Five-year terms also carry higher rates than shorter terms in most market conditions. Lenders price in the risk of holding your rate steady for that long, and you pay a premium for that certainty. If rates fall during your fixed period, you will be stuck paying the higher rate unless you refinance and accept the break cost.

For a Sandy Bay investor planning to hold the property long-term with no intention of selling, renovating, or expanding their portfolio in the next five years, a five-year fix can work. But it requires confidence that your circumstances will not change.

What Happens When Your Fixed Term Ends

When your fixed term expires, your loan automatically reverts to the lender's standard variable rate unless you take action. That reversion rate is almost always higher than the variable rate advertised to new customers, sometimes by 0.5 to 1 percentage point or more.

Most lenders will contact you 30 to 60 days before your fixed term ends and offer you the option to refix or switch to a different product. This is also the time to consider refinancing to a different lender if better rates are available elsewhere.

If your fixed term and your interest-only period both end at the same time, your repayments will increase for two reasons: the rate may go up, and you will start paying principal as well as interest. Planning for that change at least three months in advance gives you time to assess your options without rushing.

Split Rate Structures and How They Work with Fixed Terms

A split rate structure divides your loan into two portions: one fixed, one variable. You might fix 50 per cent of the loan for three years and leave the other 50 per cent variable, or split it 70/30, or any other combination the lender allows.

This structure gives you partial protection against rate rises while keeping some flexibility. The variable portion can usually accept extra repayments, and you can access any redraw or offset account linked to that portion. The fixed portion stays locked.

For Sandy Bay investors, a split structure can make sense if rental income is stable but you want the option to pay down the variable portion using surplus cash flow or a year-end bonus. It also reduces the impact of break costs because you are only locked in on part of the loan, not the whole amount.

The downside is added complexity. You will have two interest rates to track, two sets of repayment amounts, and potentially two expiry dates to manage. Some lenders also charge higher fees for split loans or limit the offset account to the variable portion only.

Break Costs and Why They Matter More for Investment Loans

Break costs are the fee you pay if you exit a fixed rate loan before the term ends. The cost depends on how much rates have moved since you fixed, how much time is left on the term, and how much you still owe.

If you fixed at 5.8 per cent and the lender's current fixed rate for the remaining term is 6.5 per cent, you will pay little or nothing to break because the lender can re-lend your money at a higher rate. If the current rate is 5.0 per cent, you will pay a significant break cost because the lender loses income by releasing you early.

For investment loans, break costs are not tax-deductible as a lump sum. They must be amortised over the remaining term of the loan or five years, whichever is shorter. That reduces their immediate tax benefit and makes breaking a fixed rate investment loan more expensive in practice than breaking an owner-occupier loan.

If you are considering a fixed term for an investment property, factor in the possibility that you may need to sell, refinance, or access equity before the term ends. A shorter fixed term reduces that risk.

Locking in a rate for your investment property is not just about picking the lowest number. It is about matching the term to your plans for the property, your tolerance for rate movement, and how much flexibility you need to keep. Call one of our team or book an appointment at a time that works for you to talk through which fixed term fits your situation.

Frequently Asked Questions