When your fixed-rate mortgage term ends, you’re faced with a decision: stick with your current lender or shop around. Many people assume switching is the smart move-after all, new lenders often offer tempting deals. But what if your current lender already gives you a good rate? Is it even worth the hassle? The truth is, remortgaging with your existing lender isn’t just easier-it can be smarter, especially if you know what to look for.

Why staying with your current lender makes sense

Most homeowners don’t realize their current lender already has your full financial history. That means less paperwork, faster approval, and fewer surprises. You won’t need to resubmit payslips, bank statements, or proof of income. Your lender already knows you pay on time, own a home, and haven’t taken on risky debt. That’s a big advantage.

Take the case of a homeowner in Christchurch who stayed with her bank after her 5-year fixed term ended. She got a new 3-year deal at 5.8% without submitting a single document. Meanwhile, her neighbor switched lenders and spent six weeks waiting for valuations, credit checks, and legal paperwork-only to end up with a rate of 5.9%. The difference? One extra percentage point over a $400,000 loan adds up to nearly $2,400 a year.

Existing lenders also often offer loyalty discounts. They don’t want to lose you to a competitor, so they’ll sometimes drop your rate by 0.2% to 0.5% just to keep you. That’s free money. No application fees. No valuation costs. No lawyer fees. Just a simple email or phone call.

The hidden costs of switching

Switching lenders sounds simple, but it’s not. You’ll likely pay for:

• Discharge fees from your current lender (can be $300-$800)
• Application fees from the new lender (often $500-$1,000)
• Valuation fees (usually $300-$600)
• Legal fees (another $800-$1,500)

In total, switching can cost you between $2,000 and $3,500 upfront. And that’s before you even factor in the time. If you’re on a tight schedule-maybe you’re planning a renovation or have kids starting school-you don’t want to be stuck in limbo for weeks while paperwork gets shuffled.

And here’s the kicker: many new lenders offer low rates only if you lock in for three or more years. If you’re unsure about your long-term plans, you might end up paying early repayment fees if you decide to move again later. Your current lender, on the other hand, often lets you switch to a new product without penalties.

What you should check before deciding

Before you assume your current lender has the best deal, do a quick check. Ask them for their current standard variable rate and any special offers they have for existing customers. Don’t accept the first number they give you-ask if there’s a better deal available.

Compare that rate to what’s on the market. In March 2026, the average 3-year fixed rate in New Zealand is around 6.1%. If your lender is offering you 5.7% or lower, you’re already ahead. If they’re offering 6.3% or more, then it’s worth looking elsewhere.

Also check:

• Can you make extra repayments without penalty?
• Do they offer a redraw facility?
• Is there a fee-free offset account?
• Do they allow you to split your loan (fixed + variable)?

These features matter more than a 0.1% difference in rate. A lender who lets you pay extra without fees and gives you easy access to your extra payments is far more valuable than one with a slightly lower rate but rigid terms.

When you should definitely switch

There are times when switching is the only smart move:

• Your current lender doesn’t offer fixed rates anymore and you want certainty.
• You’ve built up significant equity and now qualify for a better rate elsewhere.
• Your lender has raised your rate unfairly after your fixed term ended.
• You’ve had poor service-slow responses, lost documents, unhelpful staff.
• You’re planning to borrow more (e.g., for renovations) and your current lender won’t lend you extra.

If any of these apply, don’t stay just because it’s easier. But make sure you’ve done the math. Use a mortgage calculator to compare total costs over the next 3 years. Include all fees, the new rate, and how much you’ll pay in interest. Sometimes, even with fees, switching saves you money.

Real-world example: Auckland homeowner’s choice

A couple in Mt Roskill had a 5-year fixed mortgage at 4.9% with their bank. When it ended, they were offered a new 3-year rate of 6.0%. They checked the market and found a competitor offering 5.8% with no fees and a free offset account. After crunching the numbers, they switched. They saved $1,100 in the first year, even after paying $1,200 in discharge and application fees. The offset account helped them reduce interest further by $400 a year. Total savings? Over $1,500 in year one.

But here’s the twist: they almost didn’t switch. They thought staying with their bank was the safe option. Only after asking for a better deal did the bank match the competitor’s offer. They ended up staying-with better terms.

Pro tip: Always ask for a better deal

Your current lender doesn’t know you’re thinking about leaving unless you tell them. Call them. Say: “I’ve been a customer for X years and I’m looking at my options. Is there a better rate you can offer me?”

Most lenders have a retention team. They’ll often beat a competitor’s offer just to keep you. One Auckland-based mortgage broker told me that in the last 6 months, 68% of clients who asked for a better rate got it-without switching.

Don’t be shy. You’ve paid your mortgage on time for years. You deserve a fair deal.

What to do next

Here’s your simple 3-step plan:

1. Call your current lender and ask: “What’s the best mortgage rate you can offer me right now?”
2. Get a quote from one other lender (use a free comparison tool like Mortgage Comparisons NZ or Consumer NZ).
3. Compare the total cost: rate + fees + features. If your current lender is within 0.2% and has better features, stay. If the other offer is cheaper overall, switch.

Most people overcomplicate this. It’s not about loyalty. It’s about getting the best deal for your situation. Your lender wants to keep you. But they won’t move unless you push.

Final thought

Remortgaging with your existing lender isn’t lazy-it’s strategic. You save time, avoid fees, and keep things simple. But that doesn’t mean you should accept the first offer they give you. Always ask. Always compare. Always check the fine print.

The best outcome? You stay with your current lender-but on better terms than you thought possible.