Beginner's Guide to Fixed Rates & Extra Repayments

Most fixed rate home loans limit extra repayments to around $10,000 to $30,000 per year without triggering break costs.

You're weighing certainty against flexibility. A fixed rate locks your repayment for a set period, which matters when you're advising clients through settlement timing or managing irregular income from professional fees. But that certainty comes with restrictions on how much extra you can pay down without penalty. The decision turns on whether you'll have surplus cash during the fixed period and whether you'll need to access it again.

How Extra Repayment Limits Work on Fixed Rate Products

Each lender sets an annual cap on additional repayments during a fixed period, typically between $10,000 and $30,000 per calendar year. Once you exceed that threshold, the lender calculates break costs based on the difference between your contracted rate and the current wholesale rate for the remaining fixed term. If rates have dropped since you fixed, that cost can be substantial. If rates have risen, break costs may be minimal or zero.

Consider a family lawyer who secured a three-year fixed rate and receives a $40,000 settlement from a parental estate halfway through the term. With a $20,000 annual cap, they can apply that amount immediately and bank the remainder in an offset account linked to a variable portion of the loan, or hold it in a separate account if the loan is fully fixed. The offset approach preserves access while still reducing interest, but only works if part of the loan is variable or if the fixed loan includes an offset feature, which not all do.

Split Loan Structures for Partial Protection

A split loan divides your borrowing between fixed and variable portions. You might fix 60% for rate certainty and leave 40% variable for full redraw flexibility and offset access. The variable portion accepts unlimited extra repayments, and any funds sitting in a linked offset account reduce the interest charged on that portion daily.

In our experience, lawyers with upcoming partnership distributions or expected trust payouts often prefer a 50/50 or 60/40 split. The fixed portion stabilises the bulk of their repayment, while the variable portion absorbs lump sums without penalty. If you're working through home loan refinancing to move from a fully fixed loan, a split structure might address the access issue you've encountered.

Fixed Loans with Offset Accounts

Some lenders now offer offset accounts on fixed rate products, though the feature is less common than on variable loans. The offset balance doesn't reduce your principal, but it does reduce the interest calculation daily. If you have $50,000 in the offset and a $500,000 fixed loan, you're only charged interest on $450,000.

This setup suits borrowers who expect irregular income, such as performance bonuses or costs awards, and want to preserve liquidity while reducing interest. The trade-off is that fixed rates with offset features typically carry a higher rate than a standard fixed product. You'll need to compare the rate premium against the potential interest saving from your expected offset balance. If you're likely to hold significant funds in the offset throughout the fixed period, the feature may justify the cost. If your balance will be low or inconsistent, a standard fixed rate with redraw up to the cap might be more cost-effective.

When Break Costs Apply and How They're Calculated

Break costs arise when you repay beyond the extra repayment cap or exit the fixed loan early, such as through sale or refinance. The lender calculates the economic loss from releasing you from the fixed rate contract. If you fixed at 4.5% and current wholesale rates for the remaining term are 3.8%, the lender loses the margin on that difference and charges you accordingly.

The calculation includes the remaining loan balance, the remaining fixed term, and the rate differential. A $400,000 loan with two years remaining and a 0.7% differential might incur break costs around $5,000 to $6,000, though the exact figure depends on the lender's wholesale funding curve. If rates have risen since you fixed, the differential works in your favour and break costs may be zero. Some lenders waive break costs in specific circumstances, such as sale due to relocation or financial hardship, but policies vary.

If you're anticipating a change in circumstances during the fixed period, such as a move interstate or a property upgrade, check the lender's break cost policy and portability terms before locking in. A portable loan lets you transfer the fixed rate to a new property, though you may still face break costs if the new loan amount is lower than the original.

Redraw Facilities and Access Conditions

Most fixed loans with extra repayment capacity also include a redraw facility, allowing you to withdraw funds you've paid above the minimum. The redraw isn't guaranteed and operates at the lender's discretion, though in practice it's usually available unless you're in arrears or the loan is in default.

Redraw differs from an offset account in two ways. First, redraw requests may take a few business days to process, while offset funds are accessible instantly via a linked transaction account. Second, redraw reduces your principal immediately, which can affect your loan structure if you're claiming interest deductions on an investment loan. Drawing down funds you've already repaid may not restore the deductibility of that interest, depending on how you use the redrawn amount. If you're managing both owner-occupied and investment debt, discuss the tax treatment with your accountant before using redraw for non-deductible purposes.

Choosing Between Full Fixed, Full Variable, or Split

Your choice depends on three factors: your tolerance for rate movement, your expected surplus cash flow, and your need for access to that cash.

If you're comfortable with repayment fluctuations and expect to make significant extra repayments, a variable rate with full offset and redraw offers complete flexibility. If you want certainty and don't expect to exceed the annual cap, a fixed rate provides stable budgeting. If you want both, a split loan delivers partial certainty without locking down every dollar. Many family lawyers we work with prefer the split approach because it reflects the reality of their cash flow, which includes both predictable salary and less predictable distributions or bonuses.

When comparing home loan rates, look beyond the headline figure and assess the total cost over the period you expect to hold the loan. A slightly higher variable rate with an offset may cost less overall than a lower fixed rate if you can maintain a high offset balance. Run the numbers based on your actual expected surplus, not an ideal scenario.

If you're considering a fixed rate as part of a broader loan structure, including investment loans or debt recycling strategies, the interaction between fixed and variable debt matters. You might fix the owner-occupied portion for certainty and keep investment debt variable to maximise deductibility and offset access.

Call one of our team or book an appointment at a time that works for you to discuss which loan structure aligns with your income pattern and repayment goals.

Frequently Asked Questions