What are Fixed Rate Loan Terms for First Home Buyers?

Fixed rate loan terms are the length of time your interest rate stays locked in, typically ranging from one to five years. Most teaching assistants buying their first home choose a three-year fixed term, but that choice depends on how long you plan to stay in the property and what flexibility you need during that period.

The decision between a one-year, three-year, or five-year fixed term is not about picking the longest option to feel secure. It is about matching the lock-in period to your actual circumstances. A longer fixed term means you are committed to that rate for longer, which can work against you if rates fall or you need to sell before the term ends. A shorter fixed term gives you more flexibility but exposes you to rate changes sooner.

How Fixed Rate Terms Affect What You Can Do With Your Loan

When you lock in a fixed rate, most lenders restrict what you can do during that period. You typically cannot make extra repayments beyond a small annual limit, often around $10,000 to $20,000 per year depending on the lender. You also lose access to an offset account in most cases, and breaking the loan early can trigger break costs that run into thousands of dollars.

Consider a teaching assistant who locks in a five-year fixed term on a property they expect to live in long-term. Two years later, they are offered a permanent role at a school in another region and need to sell. If rates have dropped since they fixed, the lender will charge break costs to recover the interest they would have earned over the remaining three years. On a $400,000 loan with a rate difference of just 1%, that cost can exceed $10,000. The longer the remaining fixed term, the higher the potential cost.

If you are uncertain about staying put, a shorter fixed term or a split loan structure that keeps part of your loan variable gives you more room to move without penalty.

One-Year Fixed Terms and When They Make Sense

A one-year fixed term locks in your rate for the shortest period most lenders offer. It suits buyers who want a brief period of rate certainty but expect to refinance, sell, or switch to variable within the next 12 to 18 months.

This option is less common among first home buyers, but it can work if you are entering the market during a period of rate volatility and want to lock in temporarily while you get settled. The downside is you will need to make a decision again in a year, and if rates have climbed, you will either refix at a higher rate or move to variable.

One-year fixed rates are sometimes lower than longer terms, but not always. Lenders price fixed rates based on what they expect the Reserve Bank to do, so a one-year rate can sit above a three-year rate if the market expects cuts in the near term.

Three-Year Fixed Terms as the Common Middle Ground

Three-year fixed terms are the most commonly chosen option for first home buyers. They offer a reasonable period of rate certainty without locking you in so long that you lose all flexibility.

For a teaching assistant on a contract or in their first permanent role, three years often aligns with a realistic period of stability. You know your repayments will not change, you can budget without second-guessing rate movements, and you are not committed beyond a timeframe that matches most employment cycles.

The restriction on extra repayments is still in place, so if you expect to receive a large lump sum during the fixed period, such as an inheritance or a payout, a fully fixed loan will limit how much of that you can put toward the mortgage without penalty. In that situation, a split loan structure where part remains variable can let you pay down the variable portion without restriction.

Five-Year Fixed Terms and the Trade-Off of Long Certainty

A five-year fixed term gives you the longest lock-in period most lenders offer. It suits buyers who value stability above all else and are confident they will not need to sell, refinance, or make significant extra repayments during that time.

The risk is that you are committing to a rate for half a decade. If rates drop significantly during that period, you will be paying more than variable borrowers and will face break costs if you want to exit early. If rates rise, you will benefit from the lock-in, but you will still be restricted in how you can use the loan.

For teaching assistants entering the market with a long-term plan to stay in the same role and location, a five-year fixed term can provide genuine peace of mind. But it is worth asking yourself whether you are choosing it because it genuinely suits your situation or because it feels safer on paper.

Fixed Term Length and Access to Government Schemes

If you are using the First Home Guarantee to buy with a 5% deposit, your choice of fixed term does not affect your eligibility. The scheme allows you to avoid Lenders Mortgage Insurance regardless of whether you fix or stay variable, and for how long.

The same applies to stamp duty concessions and state-based grants. Your fixed term is a separate decision made after you have confirmed your eligibility for those programs. What does matter is ensuring your lender allows you to use the First Home Guarantee with a fixed rate product, as some lenders have restrictions on which loan types qualify.

What Happens When Your Fixed Term Ends

When your fixed term ends, your loan does not disappear. It automatically rolls onto the lender's standard variable rate unless you take action beforehand. That standard variable rate is almost always higher than the variable rate advertised to new customers, so sitting idle will cost you.

Most brokers recommend reviewing your loan at least three months before your fixed term expires. You can refinance to a new lender, refix with your current lender at a new rate, or switch to a competitive variable product. This is also the point where you can start making extra repayments or access an offset account if you move to a variable loan.

If you have been in the property for the full fixed term and your income has increased, you may also have more equity in the property, which can improve your refinancing options and give you access to lower interest rates.

Splitting Your Loan Between Fixed and Variable

You do not have to choose entirely fixed or entirely variable. Splitting your loan lets you lock in part of the balance while keeping the rest flexible. A common split is 50/50, but you can adjust the ratio to suit your priorities.

A teaching assistant who wants rate certainty on most of the loan but still wants the option to make extra repayments might fix 70% and keep 30% variable. The variable portion can be linked to an offset account, and any extra funds or lump sums can go there without restriction. The fixed portion provides stability, and the variable portion provides flexibility.

This approach does mean managing two loan accounts, and some lenders charge separate fees for each portion. It also means you will not get the full benefit of rate cuts on the fixed portion, but you also will not be fully exposed if rates climb.

If you are considering this structure, it is worth discussing it during pre-approval so the loan is set up correctly from the start, rather than trying to split it later.

Call one of our team or book an appointment at a time that works for you. We will walk through your specific situation, compare fixed term options across lenders, and structure the loan to match how you actually plan to use it.

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