Do you know how fixed rate loans handle extra repayments?

Most first home buyers choosing a fixed rate loan in Double Bay don't realise that the ability to make extra repayments varies dramatically between lenders.

If you're buying in the Eastern Suburbs with a 5% deposit and locking in a fixed rate for stability, you need to know whether your lender allows extra repayments, how much you can repay each year, and what happens if you exceed that limit. This matters whether you're purchasing a unit near Bondi Junction or securing a property closer to Rose Bay, because the wrong loan structure can cost you thousands if your income increases or you receive a bonus and want to pay down debt faster.

Can you make extra repayments on a fixed rate loan?

Yes, but most lenders cap the amount you can repay above your minimum each year. The typical cap is between $10,000 and $30,000 per year, though some lenders allow no extra repayments at all during the fixed period, and a small number allow unlimited additional payments without penalty. If you exceed the annual cap, you may be charged a break cost, which is calculated based on the difference between your fixed rate and the lender's current wholesale funding cost for the remaining fixed term.

Consider a buyer purchasing a two-bedroom unit near Rushcutters Bay, where unit stock dominates and the median sits at approximately $1,211,000. They apply through the Australian Government 5% Deposit Scheme with a deposit just over $60,000, avoiding lenders mortgage insurance. They fix 70% of their loan at a rate slightly below the variable equivalent, giving them certainty on the bulk of their repayments. The remaining 30% sits on a variable rate with an offset account. Six months after settlement, they receive a $40,000 bonus from their employer. They want to pay the full amount into their loan. If they direct it all into the fixed portion and their annual cap is $20,000, they will trigger a break cost on the excess $20,000. If they instead direct the full $40,000 into the offset account linked to the variable portion, no penalty applies and the full amount reduces interest immediately. The split structure gave them the flexibility to absorb the windfall without cost.

Fixed rate caps and how they're structured across lenders

Most lenders allow between $10,000 and $30,000 in extra repayments per calendar year or per 12-month period from settlement, depending on the loan contract. The cap resets annually, so if you don't use the full allowance in one year, it does not carry over to the next. A minority of lenders apply no cap at all, treating fixed rate loans identically to variable loans for repayment purposes. These products are less common and may come with a rate premium, but they suit buyers who expect irregular income or large bonuses and want maximum flexibility.

If you're self-employed in Double Bay and your income fluctuates, knowing your lender's cap before you sign is critical. A $10,000 annual cap may feel restrictive if your business generates $50,000 in retained profit one year and you want to deploy that capital against your mortgage. Splitting your loan between fixed and variable portions allows you to direct large payments to the variable side without penalty, while still locking in rate certainty on the fixed portion.

What is a break cost and when does it apply?

A break cost is a fee charged by the lender when you repay more than your contractual allowance during a fixed rate period, or when you refinance or sell the property before the fixed term ends. The cost is calculated based on the economic loss the lender incurs when they can no longer earn the fixed rate interest from you for the remaining term. If interest rates have fallen since you fixed your loan, the lender may be able to re-lend that money only at a lower rate, and the break cost reflects that difference. If rates have risen, the break cost may be nil because the lender can now lend at a higher rate.

Break costs are not flat fees. They vary based on the size of the early repayment, the time remaining on your fixed term, and the movement in wholesale interest rates since you fixed. A $50,000 excess repayment with three years remaining on a fixed term could result in a break cost of several thousand dollars if rates have dropped, or zero if rates have risen. Lenders are required to provide a break cost estimate on request, and you should ask for this calculation before making any large unscheduled payment on a fixed loan.

Should first home buyers fix part or all of their loan?

It depends on whether you value certainty or flexibility more, and whether you expect to make extra repayments regularly. Fixing your entire loan gives you complete protection from rate rises, but it also removes access to offset accounts and limits your ability to make large additional repayments without cost. Fixing part of your loan and keeping the rest variable gives you a middle ground: rate certainty on a portion of your debt, and full flexibility on the remainder.

In our experience, buyers who are purchasing at the higher end of their borrowing capacity and want predictable repayments for the first few years tend to fix between 50% and 80% of their loan. Buyers who expect bonuses, commission income, or irregular cash flow often fix a smaller portion or avoid fixed rates altogether in favour of a variable loan with an offset account. If you're applying for pre-approval and you're not sure which structure suits you, your broker can model both scenarios and show you the difference in repayment flexibility and interest cost over time.

Offset accounts and redraw on fixed rate loans

Most fixed rate loans do not offer an offset account. A small number of lenders now offer a partial offset, typically at 40% to 60% of the balance held in the linked account, but these are the exception. If you want a full 100% offset, you will generally need to keep that portion of your loan on a variable rate. Redraw facilities are more common on fixed loans, but access can be slower than an offset and some lenders restrict how often you can redraw or charge a fee per withdrawal.

If you're holding savings for future costs such as renovations, furniture, or a vehicle purchase, an offset account gives you immediate access to those funds while still reducing your interest. A redraw facility may require a phone call or online application each time you want to access your extra repayments, and some lenders impose a minimum redraw amount. For buyers who value liquidity, splitting the loan and attaching an offset to the variable portion is usually the better structure.

How to structure your first home loan for flexibility and certainty

The most common structure we see among first home buyers in the Eastern Suburbs is a 70/30 or 60/40 split: the majority fixed for two to three years, and the remainder variable with an offset account. This structure allows you to lock in a known repayment on the bulk of your debt while keeping access to flexibility on the variable portion. If you receive a windfall, you direct it to the offset. If rates fall, you benefit immediately on the variable portion and can reassess the fixed portion at the end of its term.

If your household income is stable and you don't expect large lump sum payments, you might fix a higher percentage or even the full loan amount. If your income is variable or you're in a profession where bonuses are common, consider fixing no more than 50% to 70% and keeping the rest variable with an offset. Your first home loan application should reflect your actual cash flow, not a generic structure. A broker who works with self-employed and salaried buyers in Double Bay will tailor the loan structure to your circumstances rather than apply a one-size model.

Frequently Asked Questions