Refixing Your Mortgage: Timing and Options

Most New Zealand borrowers spend more time choosing their mortgage at the outset than they do at each subsequent refix, yet every refix is an equally important financial decision. Your original rate, term, and structure may no longer suit your current situation or the prevailing rate environment. Approaching refix time with a clear process will put you in a better position than simply accepting whatever rate your lender rolls you onto.

When Can You Refix?

Many lenders allow you to lock in a new rate up to 60 days before your current fixed term expires, without triggering a break fee. This is often called a rate lock or early refix window. Taking advantage of this window can be worthwhile if you are watching rates and see conditions moving in a direction that concerns you. However, it is equally reasonable to wait until closer to the expiry date if you want more time to compare options and speak with an adviser. The key is not to let the expiry date pass without a decision, because most lenders will roll you onto a floating or revert rate that may be higher than available fixed options.

Your Three Main Options at Refix

At refix time, borrowers broadly have three choices. The first is to refix with your existing lender, choosing a new term and rate from their current offerings. The second is to refinance to a different lender, which may come with a better rate, cashback, or more suitable product features. The third is to move to a floating rate, which offers maximum flexibility but typically carries a higher interest rate. Many borrowers choose a combination, fixing the bulk of the loan while keeping a portion floating for flexibility.

Choosing a Fixed Term

The right fixed term depends on your personal circumstances, your view of where rates are heading, and how much certainty you need over your repayments. Shorter terms, such as one or two years, give you more frequent opportunities to renegotiate and may suit borrowers who expect rates to fall. Longer terms, such as three to five years, offer more payment certainty and can be valuable if you want to budget reliably or if you think rates are likely to rise. There is no universally correct answer, and many borrowers find it useful to talk through the trade-offs with a mortgage adviser before deciding.

Refinancing at Refix

Refix time is also a natural moment to consider whether your current lender is still the right fit. Shopping your mortgage at expiry does not carry the same break fee risk as breaking mid-term, making it a lower-cost opportunity to review the market. A mortgage adviser can compare rates and product features across lenders on your behalf, which is particularly useful if your financial situation has changed since your original application. Some lenders offer cashback incentives for borrowers who switch, though these should be weighed against the true cost of the overall deal rather than treated as free money.

What to Review Before Refixing

• Your current income, expenses, and any changes in financial circumstances
• Whether the loan structure still makes sense, for example the split between fixed and floating
• Whether you want to make changes to the repayment amount or loan term
• Whether you have any lump-sum funds you want to apply before locking in again
• What rates are available across the market, not just from your existing lender

At Chaperone, we help borrowers approach refix time as an active decision rather than a passive rollover. Getting the refix right across multiple loan cycles can make a meaningful difference to the total interest you pay over the life of your mortgage. Your mortgage adviser can help you assess the full picture and choose a structure that fits where you are today, not just where you were when you first borrowed.