What Are Fixed Rate Loan Terms for First Home Buyers?

What Is a Fixed Rate Loan Term?

A fixed rate loan term is the specific period during which your interest rate remains locked at an agreed percentage. Most lenders offer terms from one to five years, with three years being the most commonly selected option. Once the fixed term ends, your loan reverts to a variable rate unless you negotiate a new fixed period.

Air Force members often face postings that shift financial priorities midway through a loan. A fixed term offers protection against rate rises during that period, but it also locks you into specific conditions. If you need to refinance, sell, or increase repayments during the fixed term, break costs can apply. Choosing the right term length depends on how long you expect to stay in the property and whether you value rate certainty over flexibility.

How Fixed Terms Affect Your Repayment Flexibility

During a fixed rate period, your ability to make extra repayments is usually capped. Many lenders allow up to $10,000 to $30,000 in additional repayments per year, but amounts above that trigger break costs or are simply not permitted. You also lose access to an offset account in most cases, which can matter if you receive allowances or hold savings that could otherwise reduce interest.

Consider a buyer who secures a three-year fixed rate at 5.8% on a property purchased under the Australian Government 5% Deposit Scheme. Twelve months later, they receive a posting allowance and want to pay down $40,000 to reduce the principal. The lender permits only $20,000 in extra repayments annually during the fixed term. The remaining $20,000 either sits in a savings account earning minimal interest or incurs a break fee if applied to the loan. If that same buyer had chosen a variable rate or a split loan structure, the full $40,000 could have been applied without penalty.

Choosing Between One, Three, and Five Year Terms

One-year fixed terms suit buyers who expect a posting or income change within the next 12 to 18 months. The rate is locked briefly, offering short-term certainty without extended commitment. Three-year terms balance certainty and flexibility, covering the period most first home buyers remain in their initial property before considering a move or refinance. Five-year terms lock in the rate for longer but remove flexibility for nearly half a decade, which can be restrictive if your circumstances shift.

In our experience, Air Force members stationed at a base like Williamtown or Richmond often prefer shorter fixed terms if a posting to Tindal or Edinburgh is expected within two to three years. Locking in a five-year term when you may need to sell or convert to an investment loan in year three creates unnecessary break cost risk. If your posting timeline is uncertain, a split loan structure can be more practical, where part of the loan is fixed for certainty and part remains variable for repayment flexibility.

What Happens When Your Fixed Term Ends

When the fixed period expires, your loan automatically converts to the lender's standard variable rate unless you proactively negotiate a new fixed term or refinance. The standard variable rate is usually higher than the discounted variable rate offered to new borrowers, sometimes by 0.5% to 1.0%. You are not locked into that rate and can request a better deal from your existing lender or switch to a new lender without break costs at this point.

If your fixed term ends and you take no action, your repayments will adjust based on the new variable rate. Lenders typically notify you 30 to 90 days before expiry, giving you time to compare options. This is also the moment when you regain full access to features like offset accounts, unlimited extra repayments, and redraw facilities if your new loan product includes them. For Air Force members who have been restricted during the fixed period, this transition is an opportunity to restructure the loan to suit your current financial position and goals. More detail on managing this transition is available on our fixed rate expiry page.

Fixed Rate Break Costs and How They Are Calculated

Break costs apply when you exit a fixed rate loan before the term ends. The calculation is based on the difference between your fixed rate and the lender's current wholesale funding cost for the remaining fixed period. If rates have fallen since you locked in your fixed term, the lender loses income by letting you exit, and that loss is passed to you as a break cost. If rates have risen, break costs are usually minimal or zero.

As an example, if you fixed a loan at 6.0% for five years and market rates drop to 4.5% after two years, exiting early could cost several thousand dollars depending on the loan balance and remaining term. Break costs are not a penalty in the traditional sense but a compensation to the lender for the rate differential. Some lenders waive or reduce break costs in specific circumstances, such as genuine hardship, but this is not guaranteed. If you are considering a home loan refinance, understanding whether break costs apply and how much they will be is the first step before proceeding.

Should You Fix Part or All of Your Loan?

Splitting your loan between fixed and variable portions gives you partial rate protection while retaining flexibility on the variable component. A common split is 50/50, but the ratio can be adjusted to suit your priorities. The variable portion allows unlimited extra repayments and access to an offset account, while the fixed portion shields part of your debt from rate rises.

For first home buyers using schemes like the 5% Deposit Scheme, a split structure can be particularly useful. You lock in certainty on part of the loan while maintaining the ability to direct lump sum payments or allowances toward the variable portion. This approach avoids the all-or-nothing choice between full flexibility and full certainty. If your financial situation or posting expectations are unclear, splitting the loan reduces the risk of being locked into a structure that no longer fits your needs twelve months later.

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