What is fixed vs variable rate?
Fixed-rate mortgages lock an interest rate for the entire loan term or a set period, while variable-rate mortgages allow the rate to change in line with market movements.
When taking out a mortgage in Perth, borrowers choose between two fundamental loan structures based on how interest rates are set. A fixed-rate loan locks an interest rate at the time of settlement, and that rate remains constant for a specified period, often 1 to 10 years. During this fixed term, your monthly repayment amount stays the same regardless of what happens to broader interest rates.
A variable-rate loan ties your interest rate to a lender's benchmark rate, which adjusts periodically as market conditions change. If rates rise, your repayments increase. If rates fall, your repayments decrease. Variable rates often include a margin set by the lender above the base rate, and the combination determines your actual borrowing cost.
The key difference lies in payment certainty versus flexibility. Fixed-rate borrowers know exactly what they will pay each month and can budget with confidence, though they sacrifice the opportunity to benefit from falling rates without refinancing. Variable-rate borrowers face fluctuating costs but gain upside when rates drop, and they typically pay a lower opening rate than fixed loans as compensation for taking on interest-rate risk.
Most Perth mortgages sit on a fixed term for 3 to 5 years before reverting to variable or being refinanced. Your choice depends on your risk tolerance, cashflow position, and rate outlook. A mortgage broker can help model both structures against your circumstances.