Beginner's Guide to Refinancing for Lower Rates

What Refinancing Actually Means

Refinancing means switching your mortgage from one lender to another, or renegotiating your existing loan to get a lower rate or different terms. You're essentially replacing your current home loan with a new one that works harder for you.

Most people consider refinancing when their fixed rate period ends, but you can also switch mid-term if the potential savings outweigh any costs involved. The goal is usually to reduce your interest rate, which lowers your repayments and the total amount you'll pay over the life of the loan. In Christchurch's current market, where property values have stabilised after earlier fluctuations, many homeowners who bought or re-fixed a few years ago are sitting on rates that no longer reflect what lenders are offering today.

When Does Switching Banks Make Sense?

Switching makes sense when the interest you'll save exceeds the cost of moving, or when you need to change your loan structure to suit new circumstances. If your fixed term is ending soon and your bank's re-fix offer sits above what other lenders are advertising, that's usually a clear signal to explore your options.

Consider someone in Halswell who fixed for two years at 6.8% when rates were climbing. That term is now expiring, and their current lender has offered a one-year re-fix at 6.5%. Meanwhile, other banks are offering 5.9% for the same term with a cashback incentive. Over a $450,000 loan, that 0.6% difference means around $2,700 less in annual interest. Add a $3,000 cashback, and the value of switching becomes obvious. The same applies if you're on a floating rate and haven't reviewed your loan in over a year.

How Break Fees Affect Your Decision

If you're still within a fixed rate period, you'll likely face a break fee when refinancing. This fee compensates the lender for the interest they'll lose when you exit early. The amount depends on how much time remains on your fixed term and how much rates have moved since you locked in.

Break fees are calculated using the difference between your current rate and what the lender could earn by re-lending that money today. If rates have dropped since you fixed, the fee will be higher because the bank loses out. If rates have risen, the fee might be minimal or even zero. In our experience, Christchurch clients often assume break fees will be prohibitive without actually checking. The calculation isn't always straightforward, but your current lender must provide it in writing if you ask. A mortgage adviser can request this on your behalf and compare it against the savings from a new rate to see whether switching now or waiting until your term ends makes more financial sense.

Fixed Rate Expiry and Your Re-Fix Options

When your fixed term expires, your loan typically rolls onto a floating rate, which is almost always higher than any fixed option. Your current lender will contact you before expiry with re-fix offers, but those offers aren't always competitive.

Banks tend to reserve their sharpest rates for new customers or those actively shopping around. If you accept the initial re-fix offer without question, you might be leaving money on the table. In areas like Riccarton and Papanui, where many homeowners re-fixed during the rate spike, we regularly see clients who stayed loyal to their bank and ended up paying 0.4% to 0.7% more than they needed to. That loyalty costs real money. Before you re-fix, compare what at least two other lenders are offering for the same term. The difference in repayments over even a year can cover a decent chunk of your rates bill or go straight into your offset account.

What the Switch Process Actually Involves

The refinancing process involves applying to a new lender, who will assess your income, expenses, and the property's current value before approving the loan. Once approved, your solicitor handles the legal transfer, which includes registering the new mortgage and discharging the old one.

Most people worry this will be complicated, but the new lender and your solicitor do the heavy lifting. You'll need to provide recent payslips, bank statements, and proof of expenses, just as you did with your original home loan. The new lender will also arrange a valuation, which they usually pay for. Legal fees typically range from $800 to $1,500, and some lenders offer cashback deals that cover most or all of these costs. From application to settlement, the process generally takes three to five weeks, depending on how quickly you can supply documents and how busy the solicitors are. In Christchurch, where several law firms specialise in property work, turnaround times are fairly predictable.

Cashback Offers and What They Actually Cost You

Many lenders offer cashback incentives to attract refinancing customers, typically ranging from $2,000 to $4,000 depending on your loan size. This money can cover your legal fees, valuation costs, or go towards other expenses.

Cashback isn't free money, though. Lenders usually attach conditions, such as staying with them for a minimum period (often three years) or taking out a fixed term of at least two years. If you break these conditions, you'll have to repay some or all of the cashback. The other thing to watch is whether the lender offering the cashback also has the lowest rate. Sometimes a bank will offer $3,000 cashback but charge 0.2% more than a competitor. On a $500,000 loan, that extra 0.2% costs you $1,000 per year. Over three years, you'd pay $3,000 in additional interest, which cancels out the cashback. The smart approach is to compare the total cost over the period you plan to stay fixed, factoring in both the rate and any incentives.

Using Equity for Debt Consolidation or Renovations

Refinancing also gives you the opportunity to access equity you've built up, either through repayments or property value growth. If your home is now worth more than when you bought it, you can borrow against that increased value to consolidate high-interest debt or fund renovations.

As an example, someone in Hillmorton with a $380,000 mortgage on a property now valued at $620,000 has around $240,000 in equity. If they're carrying $30,000 in credit card debt at 18% and a car loan at 9%, consolidating that into the mortgage at 6% cuts the interest significantly and simplifies repayments into one manageable amount. The same principle applies if you want to renovate. Rather than taking out a personal loan at 11%, you can top up your mortgage at the home loan rate. Just keep in mind that extending unsecured debt over a 30-year mortgage term means you'll pay more interest overall unless you make extra repayments to clear it sooner.

How a Mortgage Adviser Saves You Time and Money

A mortgage adviser compares offers from multiple lenders, handles the application paperwork, and negotiates on your behalf. Instead of contacting each bank individually and trying to make sense of different rate structures and conditions, you get a shortlist of suitable options with clear recommendations.

Advisers also spot things you might miss, like clawback clauses in cashback offers, differences in how lenders calculate servicing, or whether a particular loan structure suits your plans for the next few years. If you're self-employed or have irregular income, an adviser knows which lenders are more flexible and how to present your application in the strongest way. For Christchurch clients, working with a local finance and mortgage broker in Christchurch means they understand the regional market, know which suburbs are tightening or loosening in terms of lending appetite, and can move quickly when a good rate becomes available.

Comparing Rates Without Getting Lost in the Detail

When comparing rates, focus on the actual interest rate for the term you want, any cashback or incentives, and the total fees involved in switching. Don't get distracted by advertised 'special' rates that require conditions you won't meet, like a 20% deposit when you only have 15% equity.

Most banks publish their standard rates online, but the rate you'll actually get depends on your loan-to-value ratio, the amount you're borrowing, and sometimes your occupation or credit history. A carded rate of 6.2% might drop to 5.95% if you have 30% equity and a strong income. That's why it's worth getting personalised quotes rather than assuming the advertised rate applies to you. If you're comparing on your own, use a spreadsheet to list each lender, the rate they've offered, the cashback, the term length, and the estimated legal and valuation costs. Add it all up to see the true cost over the period you'll be fixed.

What Happens If Your Application Gets Declined

If a lender declines your refinancing application, it's usually due to a change in your income, an increase in living expenses, or a drop in your property's value. Sometimes it's as simple as the lender's servicing calculator being more conservative than your current bank's.

A decline doesn't mean you're stuck. Different lenders assess risk differently, and what one declines, another might approve. If your income has dropped or you've taken on new debt since your original loan, that can affect servicing. In that case, you might need to reduce other commitments, wait until your income stabilises, or apply to a lender with more flexible criteria. If the decline relates to your property value, consider whether a different valuer might assess it higher, or whether you need to wait a few months and pay down the loan to improve your equity position. An adviser can often identify the issue and suggest a way forward without you having to apply multiple times and risk further credit checks.

Why Timing Your Refinance Matters

Rates move regularly, and locking in at the right moment can save thousands. If fixed rates are trending down, it might make sense to go short term or even float temporarily until they settle. If they're rising, locking in sooner protects you from further increases.

You should start the refinancing conversation at least two to three months before your fixed term expires. That gives you time to compare offers, get approval, and arrange settlement without rushing or rolling onto a floating rate. If you wait until the last minute, you'll have fewer options and less negotiating power. Keep an eye on what the Reserve Bank is signalling, but don't try to time the market perfectly. If you can secure a rate that's meaningfully lower than what you're paying now and the loan structure suits your needs, that's usually enough reason to move.

Call one of our team or book an appointment at a time that works for you. We'll review your current loan, compare what's available across the market, and show you exactly how much you could save by refinancing.

Frequently Asked Questions