What is Mortgage Insurance in New Zealand?

If you're buying in Christchurch with less than 20% deposit, you'll pay a Low Equity Premium.

Mortgage insurance doesn't exist in New Zealand the way it does in other countries. Instead, when you borrow more than 80% of a property's value, banks charge what's called a Low Equity Premium, or LEP. It's a one-off fee that protects the lender if you default, and it gets added straight to your loan amount. For someone buying in Halswell or Wigram with a 10% deposit, that fee can add several thousand dollars to what you owe before you've made a single repayment.

The premium isn't refundable, and it doesn't cover you as the borrower. It compensates the bank for taking on additional risk. The amount varies between lenders, but it's typically calculated as a percentage of the total loan and increases as your deposit gets smaller. If you're weighing up whether to wait and save more or buy sooner and pay the premium, understanding how the calculation works and what triggers it makes that decision clearer.

How the Low Equity Premium is Calculated

The LEP is calculated as a percentage of your total loan amount and depends on your loan-to-value ratio. If you're borrowing 90% of the property value, you'll generally pay a lower premium than someone borrowing 95%. Most banks structure the fee in tiers, so a borrower at 91% LVR pays more than one at 85%, even though both are above the 80% threshold.

Consider a buyer purchasing in Riccarton with a 10% deposit. If the property sits at the current median and they're borrowing 90%, the LEP might be around 1% of the loan amount. That percentage can climb to 3% or more if the deposit drops to 5%. The fee gets added to the loan balance, so you're also paying interest on it over the life of the mortgage. It's not a separate line item you can pay down early unless you refinance or make a lump sum reduction.

Some lenders calculate the premium differently depending on whether you're a first home buyer or moving up the ladder. A few also waive or reduce the LEP for properties in certain postcodes or if you're switching from another bank, though those offers change regularly. When you're shopping around, the sticker rate isn't the only number that matters. Two lenders with identical interest rates can have very different costs once the LEP is factored in.

What Happens to the Premium if You Refinance

Once the LEP is charged, it doesn't disappear if you refinance or switch lenders. The fee has already been added to your loan balance, so you're carrying it forward unless you've paid it down. If your property increases in value or you've reduced the loan enough to drop below 80% LVR, you won't pay another premium when you refinance. But if you're still above that threshold, the new lender will likely charge their own LEP.

In our experience, buyers in growth areas like Rolleston or Lincoln sometimes see enough capital gain within two or three years to push their equity above 20%. At that point, refinancing to a different lender or renegotiating terms doesn't trigger a new premium. The original LEP remains part of the loan balance, but you're not penalised again. If values have stayed flat or your loan hasn't reduced much, you're looking at another round of fees.

This is one reason why some buyers opt to start with a split loan structure, fixing part of the loan to lock in repayments and keeping part on floating to make lump sum payments without penalty. Paying down the principal faster can push you below the 80% threshold sooner, which opens up more options when you refinance.

When the Premium Can Be Avoided

You avoid the LEP entirely by putting down at least 20% of the purchase price. For someone buying in Christchurch, that threshold is the line between paying the premium and not. If you're close but not quite there, even a small boost to your deposit from a guarantor or family gift can make the difference.

Some first home buyers qualify for exemptions under the First Home Loan scheme, which allows certain lenders to offer home loans at higher LVRs without charging a Low Equity Premium or requiring the full 20% deposit. Eligibility depends on your income, the property price, and whether you meet the criteria set by Kainga Ora. Not every lender participates, and the properties need to fall within set price caps. If you're looking at entry-level homes in areas like Hornby or Sockburn, the scheme can be worth exploring.

Another scenario where the premium doesn't apply is when you're refinancing and already own more than 20% of the property. If your home has increased in value since you bought it or you've paid down enough of the loan, you might be under the 80% LVR without realising it. A valuation update can sometimes reveal that you're in a stronger position than your original loan paperwork suggests.

How Christchurch Buyers Approach the LEP Decision

For buyers in Christchurch, the question often comes down to timing. Waiting another year to save a larger deposit avoids the LEP, but it also means another year of rent and potential price movement. If properties in your target area are increasing faster than you can save, paying the premium might cost less overall than waiting.

As an example, a buyer targeting a home in Redwood with a 10% deposit might pay around $4,000 to $5,000 in LEP on a typical loan. If they wait a year to save another 10%, they avoid that fee but continue paying rent and risk the property price shifting. If values in that suburb increase by even a modest margin, the cost of waiting can outweigh the premium. On the other hand, if the market is flat or declining, holding off makes more sense.

There's no single right answer, but running the numbers with realistic assumptions about rent, savings rate, and price movement gives you a clearer picture. A mortgage adviser can also show you how different deposit levels affect your repayments and total borrowing capacity, which helps you see the trade-offs in context rather than guessing.

What Lenders Consider When Setting the Premium

Banks don't all charge the same LEP, and the variation can be significant. Some lenders set higher premiums but offer lower interest rates, while others do the opposite. The calculation also depends on your financial profile. If you're self-employed or buying an investment property, the premium might be higher than it would be for a salaried buyer purchasing an owner-occupied home.

Location can play a role too. Properties in areas that banks view as higher risk, such as those prone to flooding or earthquake damage, sometimes attract a higher premium or stricter lending criteria. In Christchurch, certain postcodes flagged for land remediation or increased insurance costs may be treated differently by lenders. It's not always obvious from the outside which areas fall into that category, so checking with a broker who knows the local lending landscape can save you from surprises at the application stage.

Your credit history, employment stability, and whether you're using a guarantor also factor into how the premium is calculated. A clean credit file and steady income usually mean a lower fee, while recent defaults or gaps in employment can push it higher or limit your options to certain lenders.

Call one of our team or book an appointment at a time that works for you. We'll show you how the Low Equity Premium applies to your situation, compare what different lenders charge, and help you decide whether buying now or saving longer makes the most sense for your circumstances.

Frequently Asked Questions