Fixed vs variable rate in 2026: what should first home buyers choose?

The variable rate on a standard owner occupier home loan is sitting around 7.2% in late 2026 after the RBA pushed the cash rate higher through the first half of the year. Lenders are advertising 2-year fixed deals in the 5.9% to 6.4% range as they try to tempt borrowers into locking something in. For a first home buyer walking into their first pre-approval meeting, this is often the single biggest decision after how much to borrow, and it is one most people get sold rather than get to think through properly.

There is no universally correct answer. The right structure depends on your deposit, your income stability, whether you are using Help to Buy or the 5% Deposit Scheme, and how much certainty you need to sleep at night. What follows is a plain English walk through of how each loan type actually behaves, where the hidden costs sit, and the split loan middle path most buyers never get offered.

How variable rates work in 2026

A variable rate moves roughly in line with the RBA cash rate. When the RBA lifts rates, your lender typically passes the change through within a month and your minimum repayment rises. When the RBA cuts, you see the opposite effect. In 2026 the big four are advertising owner occupier variable rates between 6.9% and 7.4%, clustered around the 7.2% figure the serviceability calculators on this site use as the current reference rate.

What you get in exchange for that exposure is flexibility. Variable loans let you:

• Make unlimited extra repayments with no fees or caps, which lets you chip into the principal every pay cycle if your budget allows.
• Run a full offset account. Every dollar sitting in offset reduces the interest calculated on your loan that day, as if you had paid it down.
• Refinance without break costs. If a better rate appears in 18 months, you can move with only the standard discharge and establishment fees.

The downside is simple. If the cash rate goes up another 0.25%, your minimum repayment goes up too, and your household budget absorbs the difference straight away.

How fixed rates work

A fixed rate loan locks your interest rate for a set period, usually one to five years. During that window your repayment is identical every month regardless of what the RBA does. In late 2026 the sharpest fixed rates lenders are advertising sit around 5.9% to 6.4% for 2 and 3 year terms, which is a reasonable discount to the current variable rate because lenders expect cuts over that horizon.

The appeal is certainty. If you know your repayment is $3,500 a month for the next three years, you can budget around it, plan a holiday, plan a baby, and ignore every RBA headline until the fixed period ends. That peace of mind has real value, especially for a first home buyer who has not lived through a rising rate cycle before.

The trade offs are less obvious. Fixed loans usually come with:

• Break costs if you need to sell, refinance, or make large lump sum repayments inside the fixed term. These can run into thousands of dollars depending on how rates have moved.
• Capped extra repayments, commonly between $10,000 and $20,000 per year. Pay more than the cap and you may be charged a fee or lose the fixed rate entirely.
• Partial or no offset. Many fixed products either exclude offset altogether or allow only a small linked offset. Ask the lender directly, do not assume.

The split loan middle path

Most lenders will let you split your loan between a fixed portion and a variable portion. This is the structure brokers often reach for when a borrower cannot decide, because it hedges both directions.

A common 60/40 split on a $500,000 loan might look like $300,000 fixed at 5.9% for three years and $200,000 variable at 7.2% with a full offset. The fixed portion gives you a predictable base repayment that cannot blow out if rates keep rising, and the variable portion gives you the flexibility to park savings in offset, make extra repayments and refinance later. If you build up $30,000 in offset against the variable side, you are only paying interest on $170,000 of that portion.

A split is not a magic answer. You still carry fixed break costs on the fixed slice if you need to sell early, and the overall rate you pay is a weighted blend. But it does mean a surprise RBA move only hits part of your loan, which is often the real worry for a first home buyer.

Stress testing your repayments

Banks already stress test you. When you apply for a loan the lender assesses your capacity to repay at your interest rate plus an assessment buffer of 3%, which is the APRA standard the serviceability tools on this site use. That is why your borrowing capacity feels lower than you expected.

It is worth running the same exercise yourself on whichever loan structure you are considering, because the assessment buffer is a pass or fail test rather than a budget plan. For a $500,000 principal and interest loan over 30 years, approximate monthly repayments at different rates look like:

• At 7.2% (today's variable reference): about $3,395 a month.
• At 8.2% (variable plus 1%): about $3,737 a month.
• At 9.2% (variable plus 2%): about $4,091 a month.
• At 10.2% (variable plus 3%, the APRA stress rate): about $4,455 a month.

If the stress scenario leaves no room for groceries, insurance and a break down fund, that is a signal to either borrow less, extend the term, or lean further into a fixed component so you have more certainty while you build a buffer.

What this means for first home buyers specifically

First home buyers using government schemes have an extra layer to think about:

• Help to Buy users borrow less because the Commonwealth takes an equity share, so your repayments start smaller and a variable rate with offset tends to make more sense. The flexibility helps you grow savings and buy the government out of their stake later.
• 5% Deposit Scheme and Boost to Buy users have a higher starting LVR, which means more interest paid over the life of the loan. Any strategy that lets you aggressively overpay (a variable loan or a split with a variable portion) will chip into the principal faster.
• Tight budget buyers may value fixed certainty more than flexibility. If a $300 a month rate move would break your budget, a 2 or 3 year fixed slice removes that specific stress while you build an emergency fund.
• Buyers expecting pay rises often lean variable so they can throw the raise straight at the loan without worrying about repayment caps.

How to decide

A simple way to think about it:

• Model your repayments at today's rate and at today's rate plus 2% using the tools below.
• If both scenarios feel comfortable, variable gives you the most upside through offset and extra repayments.
• If the higher scenario feels tight, consider a split with the majority fixed, or ask the lender about a fully fixed loan with the largest allowed free prepayment buffer.
• Talk the structure through with a mortgage broker or your lender. Brokers serve an important role here because loan structuring varies product by product, and the right split for a nurse on shift work is not the same as the right split for two salaried professionals.

Run the numbers

Use these tools to work out which structure actually fits your budget:

• Mortgage Offset Calculator - see how much interest an offset account saves on the variable portion of your loan.
• Borrowing Power Calculator - work out how much the bank will lend and how a rate change moves the number.
• Rent vs Buy Calculator - sense check whether the loan structure you are considering still makes buying worthwhile versus continuing to rent and save.