How to Pick a Fixed Rate Loan as a First Home Buyer

A fixed rate loan doesn't suit everyone, and it matters more when you work FIFO.

Your roster affects when you want to settle, how much you'll borrow, and whether you can handle repayments when rates shift. Lock in the wrong term and you'll hit break costs or cop higher rates at the worst time. Pick the right structure and you'll avoid both.

Why FIFO Mining Engineers Lock Fixed Rates Differently

Most first home buyers lock fixed rates to avoid repayment shocks. FIFO mining engineers also lock rates to match roster changes, contract rollovers, and planned moves between sites or partners. A two-year fixed term might line up with a long-term contract extension. A three-year term might cover the period before you switch to a different rotation or take a role closer to home.

Consider a mining engineer on a two-on-one-off rotation earning $140,000 annually. They purchase using the Australian Government 5% Deposit Scheme and settle in September. If they lock a two-year fixed rate, the term expires in September two years later, at which point they revert to a variable rate or refinance. If their contract is due for renewal in that same window, they can time the refinance to match the new income structure or adjust the loan if they move interstate for a different project.

Another engineer might plan to start a family within three years and expects one income to drop. Locking a three-year fixed rate gives certainty through that transition, then allows a refinance or restructure once the household income stabilises.

Fixed Rate Loan Terms and When They End

Fixed rate terms typically range from one to five years. The longer the term, the more protection you get from rate rises, but the less flexibility you have to exit or adjust the loan without penalty.

If you fix for two years and need to sell or refinance in year one, most lenders will charge break costs. These costs reflect the difference between the rate you locked and the rate the lender can now charge on the balance. If rates have dropped since you fixed, break costs can run into thousands of dollars. If rates have risen, break costs may be minimal or zero.

Some lenders allow a partial offset or redraw on fixed loans, but most do not. If you lock the full loan amount on a fixed rate with no offset, any surplus income sits in a separate savings account earning a lower rate than the loan costs. That difference adds up over two or three years.

A split structure solves this. You fix part of the loan to lock repayments and keep the rest variable with an offset account. The variable portion gives you access to offset benefits and penalty-free extra repayments. The fixed portion provides certainty. The split ratio depends on how much income stability you need versus how much flexibility you want.

How a Split Structure Works for FIFO Buyers

A split loan divides the total borrowing into two portions. One portion is fixed, the other variable. The split ratio is your choice. Common splits are 50/50, 60/40, or 70/30, but you can split at any ratio that suits your circumstances.

Consider a FIFO mining engineer borrowing $500,000. They fix $300,000 at a locked rate for three years and leave $200,000 on a variable rate with an offset account. The fixed portion provides stable repayments. The variable portion with offset allows them to park their savings and reduce interest on that portion of the loan. If they receive a bonus or build up savings during high-income months, they deposit it into the offset account and reduce interest without penalty.

If rates drop during the fixed term, the variable portion benefits immediately. If rates rise, the fixed portion remains unchanged. At the end of the three-year fixed term, they can refinance the fixed portion, lock a new fixed rate, or move it to variable depending on what rates and their circumstances look like at that time.

Some lenders charge two sets of fees for split loans, one for each portion. Others charge a single application fee. This varies by lender and is worth checking during the home loan application process.

What Happens When the Fixed Term Ends

When a fixed rate term expires, the loan automatically reverts to the lender's standard variable rate unless you take action beforehand. The standard variable rate is usually higher than the advertised or discounted variable rate offered to new customers. The gap can be 0.50% to 1.00% or more depending on the lender.

If you do nothing, your repayments will likely increase. If you refinance or renegotiate before the fixed term ends, you can move to a discounted variable rate or lock a new fixed term at the current market rate.

Most lenders allow you to request a rate change or refinance in the final 90 days of the fixed term without break costs. Some allow changes in the final six months. Timing matters. If you wait until after the term ends, you've already reverted to the higher standard variable rate and will be paying more until the new rate is approved and applied.

For FIFO workers, the challenge is being on-site when the fixed term is about to expire. If you're in the middle of a swing and can't access a broker or lender, the term expires and you revert automatically. Setting a reminder three months before the expiry date and arranging a review while you're on break avoids this.

How Life Stage Timing Affects Fixed Rate Choices

Your life stage determines how long you should fix. If you're single, earning a steady FIFO income, and plan to stay in the same role and location for the next few years, a longer fixed term might suit. If you're planning to move, change rosters, or start a family, a shorter fixed term or split structure gives you more room to adjust.

A mining engineer in their late twenties might buy a unit close to the airport using a 10% deposit and fix the full loan for three years. They expect to stay in the same role, have no immediate plans to move, and want repayment certainty while they build equity. Three years later, they refinance or sell and upgrade to a larger property.

Another engineer in their early thirties, already in a relationship and planning to have children within two years, might choose a two-year fixed term. This covers the period before household income changes, then allows them to refinance at a time when they can adjust the loan structure to suit a single income or reduced hours.

If you're already in a relationship and buying together, consider whose income is more stable and whether both incomes will continue. If one income is contract-based or likely to reduce, fixing for a shorter term gives you the option to restructure when that change happens.

Deposit Size, LMI, and Fixed Rate Access

Most lenders offer fixed rates regardless of deposit size, but some apply higher rates or stricter conditions for loans with less than a 20% deposit. If you're using the Australian Government 5% Deposit Scheme, check whether the lender charges the same fixed rate as they would for a 20% deposit loan or applies a premium.

Lenders mortgage insurance (LMI) is a one-off cost added to the loan if your deposit is less than 20%. Some lenders waive LMI for certain occupations, including some roles in mining and engineering. If you qualify for an LMI waiver, you can borrow up to 90% of the property value without paying LMI, which reduces your upfront costs and may give you access to lower fixed rates.

LMI does not affect your ability to fix a rate, but it does affect your borrowing capacity. If LMI is capitalised into the loan, your total borrowing increases, which may push you over the price cap for schemes like the 5% Deposit Scheme. Check the total loan amount including LMI before committing to a purchase price.

State-Based Grants, Stamp Duty Concessions, and Fixed Loans

State and territory stamp duty concessions and grants reduce the upfront cost of buying, which can increase the deposit you have available or reduce the amount you need to borrow. These concessions apply regardless of whether you choose a fixed or variable rate loan.

In Western Australia, first home buyers purchasing a new home valued under $750,000 can access a $10,000 grant and a full stamp duty exemption on properties up to $430,000. In Queensland, buyers of new homes under $750,000 can access a $15,000 grant and full stamp duty concessions on new builds with no price cap from May last year. South Australia offers a $15,000 grant for new homes with no price cap on contracts from mid-last year, plus a full stamp duty concession on new homes and vacant land.

These concessions apply at settlement and do not change based on loan structure. You can lock a fixed rate, split the loan, or leave it fully variable and still access the full concession. The concession reduces the upfront cash required, which may allow you to hold more in savings or reduce the loan amount.

If you're buying in a state with significant stamp duty savings, factor that into your deposit calculation before deciding how much to fix. A larger deposit may reduce the loan amount enough that you don't need to lock the full amount on a fixed rate.

Pre-Approval and Locking a Rate Before Settlement

Rate locks are not the same as pre-approval. Pre-approval confirms how much you can borrow and gives you confidence to make an offer. A rate lock guarantees the rate you'll pay once the loan settles. Most lenders offer rate locks for 90 days from the date of formal approval. Some extend this to 120 days for off-the-plan or construction purchases.

If rates are falling, you may not want to lock early. If rates are rising or you're purchasing in a volatile market, locking early protects you. The decision depends on the current rate environment and how long settlement will take.

For FIFO workers buying interstate, settlement can take longer if you're on-site and can't attend in person. Some states allow remote settlement, others require you to be present or appoint a representative. If settlement is delayed and your rate lock expires, the lender may apply the current rate at the time of settlement, which could be higher.

Locking the rate at formal approval and ensuring settlement happens within the lock period avoids this risk. If you're buying off-the-plan or building, ask the lender for an extended rate lock period upfront.

Call one of our team or book an appointment at a time that works for you. We'll walk through your roster, your income structure, and which fixed rate term lines up with where you're heading next.

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