Do you know what drives home loan interest rates?

The rate you see advertised isn't always the rate you'll pay

The advertised rate on a home loan is typically the lender's lowest possible offer, reserved for borrowers with a 20% deposit, strong income stability, and an owner-occupied purchase. If your deposit is smaller, you're refinancing, or the property is for investment, the rate you're offered can sit 0.30% to 0.80% higher. Lenders assess your loan to value ratio, employment type, and loan purpose before applying a rate discount to their standard variable rate. That discount determines what you actually pay.

Consider a buyer in Merrylands purchasing an owner-occupied property with a 15% deposit. The lender's advertised variable rate sits at 5.99%, but the standard variable rate is 7.50%. With a 15% deposit, the lender applies a 1.30% discount instead of the full 1.51% discount offered to borrowers with 20% equity. The rate offered becomes 6.20%, not 5.99%. The buyer also pays Lenders Mortgage Insurance because the deposit falls below 20%, which adds a one-off cost but doesn't change the interest rate itself.

Variable rate home loans respond to Reserve Bank movements

A variable interest rate moves up or down in response to changes in the official cash rate set by the Reserve Bank of Australia. When the cash rate rises, lenders typically pass on most or all of the increase within a few weeks. When it falls, the size and speed of rate cuts vary between lenders. Some reduce rates quickly, others delay or pass on only a portion of the cut. Variable rate home loans give you flexibility to make extra repayments without penalty, and many include an offset account that reduces the interest charged on your loan amount.

In our experience, borrowers in Merrylands with variable rate loans tied to the same lender can see differences in how quickly rate changes are applied depending on when they took out the loan. A borrower who refinanced recently might receive a rate cut within days, while someone on an older loan product might wait longer or receive a smaller reduction. The product name and terms at the time of settlement influence how the lender treats that loan over time.

Fixed interest rate home loans lock in certainty for a set period

A fixed rate home loan holds your interest rate steady for a chosen period, typically between one and five years. You pay the same amount each repayment cycle regardless of cash rate changes during that period. Fixed rates are priced based on wholesale funding costs and lender expectations about future rate movements, not the current cash rate. This means fixed rates can sit above or below variable rates depending on market conditions.

Fixed rate products suit borrowers who want predictable repayments and are comfortable forgoing offset accounts and the ability to make large extra repayments. Most fixed rate home loans cap additional repayments at $10,000 to $30,000 per year. If you exit the fixed term early by selling, refinancing, or paying out the loan, you may face break costs if rates have fallen since you locked in. Once the fixed period ends, the loan typically reverts to the lender's standard variable rate unless you refinance or negotiate a new fixed term. If your fixed rate is approaching expiry, it's worth reviewing your options at least three months before the term ends.

Split rate structures combine both approaches

A split loan divides your total loan amount between a fixed portion and a variable portion. You might fix 60% of the loan for three years and leave 40% on a variable rate. This approach gives you some protection against rate rises while maintaining flexibility to make extra repayments on the variable portion and access an offset account for that part of the loan. The split doesn't need to be even, and you choose the proportions based on how much certainty you want versus how much flexibility you need.

Consider a Merrylands household borrowing to purchase near Merrylands Shopping Centre. They split the loan 50/50, fixing half at 5.89% for three years and leaving the other half variable at 6.10%. They direct their offset account to the variable portion, which reduces interest charged on that half. When the fixed portion reverts after three years, they can refinance that portion, fix it again, or leave it variable depending on where rates sit at the time. The structure allows them to adjust one part of the loan without disturbing the other.

Rate discounts depend on your deposit size and loan purpose

Lenders offer larger rate discounts to borrowers who present lower risk. A 20% deposit on an owner-occupied property attracts a bigger discount than a 10% deposit on an investment property. The difference in rate can reach 0.50% or more. If you're applying for a home loan in Merrylands as an owner-occupier with a strong deposit, you'll access better pricing than someone purchasing the same property as an investment with a smaller deposit.

Lenders also adjust discounts based on the loan amount. Some offer tiered pricing where loans above $500,000 or $1 million receive an additional 0.05% to 0.10% discount. This benefits buyers in suburbs where property values sit at the higher end. If you're borrowing a larger amount and have a solid deposit, it's worth asking what discount applies at different loan sizes before finalising the amount you borrow.

Offset accounts reduce interest without changing your rate

An offset account is a transaction account linked to your home loan. The balance in the offset account reduces the loan balance used to calculate interest each day. If you have a $500,000 loan and $30,000 in your offset, you only pay interest on $470,000. The interest rate on the loan doesn't change, but the amount of interest charged each month drops. Most offset accounts are available with variable rate home loans and the variable portion of split loans, but rarely with fully fixed loans.

In areas like Merrylands where households often manage rental income, small business earnings, or savings toward renovation projects, an offset account provides a way to hold funds without paying tax on interest earned in a standard savings account. The money remains accessible, and every dollar in the offset reduces the interest you pay. If you're comparing home loan options, check whether the offset is fully linked or partially linked. A fully linked offset provides a 100% interest saving, while a partially linked offset might only save you 60% or 80% of the interest on the offset balance.

Loan features influence the rate you're offered

Lenders price their home loan products based on the features included. A basic variable rate loan with no offset, no redraw, and limited flexibility will often carry a lower rate than a package with multiple features. The difference can range from 0.10% to 0.30%. If you don't need an offset account or the ability to make extra repayments, choosing a no-frills product can reduce your interest rate. If flexibility matters more than a slight rate saving, a packaged loan with broader features might suit your circumstances.

Some lenders bundle home loan packages with fee waivers, including annual package fees, offset account fees, or redraw fees. These packages typically sit 0.15% to 0.25% above the lender's lowest advertised rate but can save you $300 to $400 annually in account-keeping costs. The value depends on how many features you'll actually use. If you plan to make regular extra repayments or use an offset account, the packaged loan often delivers more value despite the slightly higher rate.

Interest-only repayments change what you pay, not the rate

An interest-only home loan lets you pay only the interest portion of the loan for a set period, usually one to five years. The interest rate on an interest-only loan is typically 0.30% to 0.60% higher than a principal and interest loan with the same lender, because the lender takes on more risk when equity doesn't build during the interest-only period. Investors often use interest-only loans to maximise tax-deductible interest while directing cash flow toward other investments or paying down non-deductible debt.

Once the interest-only period ends, the loan reverts to principal and interest repayments. The remaining loan balance is then repaid over the shortened loan term, which increases the monthly repayment amount. If you're considering an interest-only structure for an investment property, factor in the rate difference and the higher repayments once the interest-only term expires.

Refinancing can improve your rate if your circumstances have changed

If your equity has increased, your income has improved, or you've paid down enough of the loan to drop below 80% loan to value ratio, refinancing can unlock a lower rate. Lenders reassess your risk profile at the time of refinance, and you may qualify for a larger rate discount than you received on your original loan. Refinancing also gives you the opportunity to switch loan features, consolidate debt, or access equity for renovations or investment.

Merrylands has seen steady property value growth over recent years, meaning borrowers who purchased a few years ago may now hold significantly more equity than their initial deposit. If your LVR has dropped from 90% to 75% due to property value increases and repayments, you could access a rate 0.30% to 0.50% lower by refinancing. The cost of refinancing, including discharge fees, application fees, and valuation fees, typically ranges from $800 to $1,500. The rate saving needs to offset these costs within the first year or two to make the switch worthwhile.

Call one of our team or book an appointment at a time that works for you.

Frequently Asked Questions