Should I Switch Banks? NZ Mortgage Refinance & Break Fee Calculator
Is it actually worth switching banks in New Zealand? > Switching banks can score you a lower interest rate and a generous new cash contribution, but it’s rarely free. To figure out if refinancing is worth it, you need to calculate your Net Benefit. This means taking the new bank's cashback and your estimated interest savings, and subtracting the costs of leaving—which usually include solicitor fees (approx. $1,200), potential property valuation fees, your current bank's break fees, and any "clawback" of the original cashback you received if you've been with them for less than 3-4 years. Use our calculator below to crunch the numbers!
Should I Switch Banks?
NZ Mortgage Refinance & Break Fee Calculator
1. Current Bank Details
2. Apples to Apples Rate Comparison
Let's compare what your current bank would offer you today versus the new bank.
Need to find the latest advertised rates? Check out our live mortgage rate comparison tool here.
3. Loan Splits & Break Fees
Add up your loan splits. Enter any break fees for fixed terms you are ending early. If you don't know what your break fees are, check with your current bank.
Make sure to include revolving credit limits (not balances)!4. Extra Setup & Costs
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💡 Frequently Asked Questions About Refinancing
Should I break my fixed mortgage to get a lower rate? It depends entirely on the maths. If interest rates have dropped since you fixed your mortgage, your current bank will likely charge you a "break fee" to compensate for their financial loss. You may only want to break your mortgage if the interest you save on the new, lower rate (plus any new bank cashback) outweighs the break fee and legal costs associated with switching.
What is a cashback clawback? When you take out a mortgage, banks often give you a cash contribution (cashback) as a welcome gift. However, this comes with strings attached. If you refinance and leave that bank within a certain timeframe—usually 3 to 4 years—they will ask for some or all of that money back. This is known as a clawback, and it usually steps down over time (e.g., 100% in year one, 66% in year two, etc.).
How much does a solicitor cost for refinancing? Even though you are just moving a debt from one bank to another, the old bank's mortgage needs to be officially discharged from your property title, and the new bank's mortgage registered. A solicitor or conveyancer must handle this legal process. In New Zealand, you can typically expect this to cost around $1,000 to $1,500.
Do I need a registered valuation to switch banks? Usually, you only need a registered valuation if you have less than 20% usable equity in your home. If your home's value has dropped, or if you borrowed heavily to get into the market recently, the new bank may require an independent valuation (costing around $1,000) to confirm the property's worth before they agree to take on your loan.
Are break fees the same at every bank? No. While the calculation method is roughly similar across NZ banks (based on wholesale interest rate movements and the time remaining on your fixed term), the exact formula and the wholesale rates they use differ. Break fees change daily, so an estimate today might be different tomorrow. Always ask your bank for an exact quote valid for that specific day, as there is no reliable way for us to calculate or estimate this.