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Should I lock in a fixed rate for my home loan?

12 July 2025 · 3 min read

Deciding whether to lock in a fixed interest rate depends on budget stability, plans, and flexibility.

Should I lock in a fixed rate for my home loan?

This is always a hot topic in the mortgage market, especially when rates are going through a period of adjustment.

When considering fixing a loan, several factors help determine if it is appropriate for individual circumstances.

1. What is your affordability?

If home loan rates went up tomorrow, would this put stress on your budget and make it hard to meet monthly commitments? If so, a fixed home loan rate may be suitable. Looked at simply: if rates went down, savings might be missed, but if rates went up, a variable loan could put a household budget at risk of falling behind. What is more important – waiting to see if interest rates drop, or ensuring the future sustainability of the household budget?

2. Which direction do you believe home loan rates are going?

Lenders have expert teams who review where interest rates may head in the short and long term. For example, if a lender sets their two-year fixed rate lower than their variable rate, it could indicate an expectation that the variable rate will drop below the fixed rate before the two years are up. Likewise, if a five-year fixed rate is set higher, it may suggest rates are expected to rise before the five-year period ends. While not the only factor, this provides insight into where the market expects rates to move.

3. Can you make extra repayments?

Even with a fixed rate home loan, making additional repayments may still be possible. Lenders have different allowances in this space. Some allow a set limit per year, such as $5,000 to $10,000, while others apply a limit over the life of the fixed term. For example, if the limit on a three-year fixed loan is $10,000, repayments above an average of roughly $3,300 per year are restricted. Exceeding this threshold can breach the contract and incur fixed rate break costs. Reviewing the lender's terms and conditions or consulting a mortgage broker before applying helps ensure clarity.

4. Are you planning to make changes in the near future?

While fixing a home loan provides certainty over repayments and budgeting, breaking a fixed contract can be costly. Anyone considering selling, upgrading, or using equity for an investment property should evaluate whether a fixed rate could impede those goals. For instance, fixing for three years but selling in twelve months can result in substantial break fees. Similarly, if equity is needed to purchase a new property and the existing lender cannot assist, break costs could make switching to an alternative lender unviable. Sharing future plans with a mortgage broker ensures these scenarios are taken into account.

5. Fixed rate break costs

While exit fees are banned in Australia, fixed rate break costs are different. A fixed rate loan is an agreement to remain with a lender on a set rate for a specified term. Breaking this agreement allows the lender to charge break costs, which reflect the financial loss incurred by releasing the contract early and re-lending the funds. These quotes can range from $150 to $20,000 or more. However, break costs only apply if the agreement is ended early, and many borrowers remain for the full term.

Deciding whether a fixed rate is suitable depends on individual requirements. A professional review provides the facts on fixed rate home loans to clarify how they work. Borrowers should feel comfortable with their choice and ensure it aligns with future plans. A home loan can always be fixed later if interest rates change, but switching a fixed rate loan back to variable during the fixed term is significantly harder. If uncertain, the decision does not need to be made immediately and can be reviewed later.

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