If you are thinking about refinancing your mortgage, understanding what the process involves can make the experience feel less uncertain. This guide walks you through the main steps, what lenders typically look at, which documents you are likely to need, and what to expect between starting the process and reaching settlement.
If you would like to explore the different ways refinancing can work first — whether that is reducing repayments, consolidating debt, restructuring your loan, or releasing equity — our mortgage refinance strategies guide is a good place to start.
If you are ready to look at your own situation more closely, our Refinance service page explains how Platinum Mortgages can help you work through the next step.
Before starting a refinance application, it helps to be clear about why you are reviewing your mortgage. Common triggers include:
If you are still deciding which refinance strategy may suit your situation, our mortgage refinance strategies guide explains the main options side by side.
Now that you understand what refinancing is and when it makes sense, here is a simple overview of how the process typically works.
The first step is to look at your existing mortgage, your equity, your income, credit position, and what you want refinancing to achieve. This helps determine whether refinancing is likely to improve your situation, and what type of lender or loan structure may be suitable.
Pro tip: Have recent payslips, bank statements, and your current mortgage statement ready — it can save days.
Once your goals are clear, the next step is to compare lending options. This can include looking at interest rates, loan structure, fees, flexibility, and whether a different lender or a different structure with your current lender may work better.
Pro tip: Think ahead 12–36 months — renovations, income changes, or property plans can influence the best structure today.
If refinancing looks worthwhile, the application stage begins and usually involves providing the following:
Pro tip: Make sure names and addresses are consistent across documents, as this can prevent back-and-forth and help keep your application moving smoothly.
If the application is approved, the new loan is finalised and the existing mortgage is repaid as part of settlement. From that point, the new loan structure, repayments, and terms take effect.
Pro tip: Review cashback clawback periods and fixed-rate terms carefully, as understanding these upfront gives you confidence about your future options.
The refinancing process can be straightforward when the structure is right and the supporting documents are ready. If you want to explore your options, visit our refinance service page.
Before refinancing, it helps to understand how changes to your loan amount, term, or interest rate could affect your repayments. You can use our mortgage calculator to explore different scenarios. It is a quick way to explore repayments and savings before speaking with us. Remember — you do not have to run these numbers on your own. We can step through them with you and show how refinancing might work in your situation.
Not necessarily. We assess break fees, total savings, and your long-term goals to help you decide if refinancing will genuinely improve your position.
It depends on your lender and scenario. Some banks accept a desktop valuation, while others require a full registered valuation.
It may still be possible in some situations, but it depends on your credit history, recent repayment conduct, equity, income, and lender criteria. A mortgage adviser can help you understand whether refinancing is realistic before making unnecessary applications.
Loan-to-Value Ratio (LVR): The percentage of your loan compared to your property’s value. A lower LVR usually unlocks more lender options and sharper pricing. As a guide, having 20%+ equity, or 80% LVR or lower, often leads to better offers.
Equity: Your property’s value minus what you owe on the mortgage. Equity can grow as you repay your loan or if your home value rises. You can access it through a top-up or a full refinance.
Break Fee or Early Repayment Cost: A charge some lenders apply if you end a fixed-rate loan early, such as refinancing before the term ends. It depends on the time remaining and current wholesale or market rates.
Fixed Rate vs Floating Rate: A fixed rate gives certainty for a set term, while a floating rate moves with the market and may offer more flexibility for lump-sum repayments or early changes. Many borrowers use a mix.
Refix vs Refinance: Refixing means choosing a new fixed term with your current lender at the end of a fixed period. Refinancing means restructuring your lending and/or switching lenders to improve rates, structure, or features.
Top-Up or Home Loan Increase: An increase to your existing mortgage, usually with your current lender, to fund things like renovations or debt consolidation. Compare this with a full refinance to ensure you are getting the best structure and rate.
Valuation: Some lenders accept an electronic or desktop valuation, while others require a full registered valuation by an independent valuer who inspects the property. The lender decides which is needed.
Cashback Offer: A one-off incentive some lenders pay at settlement when you refinance to them. This is often subject to a clawback if you leave within a set period, commonly two to three years. Do not choose on cashback alone; compare overall cost and structure.
This guide has explained the main steps in the mortgage refinancing process in New Zealand, including what lenders may check, which documents may be needed, and what to consider before approval and settlement. If you are considering refinancing and want guidance based on your situation, contact Platinum Mortgages to talk through your next step.
Angela is an accredited Financial Adviser, licensed under FSP742251 and has been in the Financial Industry since 2006. Our 5-star Google reviews reflect the excellent customer experience we promise — making your home loan journey positive, stress-free, and rewarding. At Platinum Mortgages, our clients are the reason we exist — so you can be confident your home loan journey is guided by genuine care and expertise.
