Mortgage calculators
If you're looking to find out how much you can borrow or what your mortgage repayments might be, you've come to the right place.
Banks will often let you borrow more money than you can actually afford. Our home loan experts will help to give you an idea of how much you can afford to borrow.
And if you're looking to work out what your repayment amounts might be, check out our mortgage repayments calculator - it's easy to see how your repayments change based on loan size, rate or loan term.
Already have a mortgage? Our refinance calculator can help see how switching to another bank could save you a ton of interest, plus some extra cashback.
How much can I borrow for a house?
Tell us a little about your financial situation and we'll work out how much you could borrow towards purchasing a home.
*This calculator is intended as a guide for illustrative purposes only and is not intended to provide financial advice. The results are based on the information you enter and assume that interest rates and loan terms remain constant for the duration of the loan. It does not account for fees, fluctuating interest rates, or changes to your financial situation over time. Please note that actual borrowing amount may differ and interest rates are subject to change. To talk to one of our team at Squirrel, contact us here. We recommend seeking financial advice about your situation and goals before making any financial decisions.
Work out your mortgage repayments
Want to know how your home loan repayments change if you adjust the loan amount, the interest rate or the loan term? Just pop your details into our quick mortgage repayment calculator below.
It'll show you your repayment amounts, how much total interest you'll pay over the life of the loan, and the difference between monthly or fortnightly repayments.
What will my mortgage repayments be?
Work out your regular repayments and how quickly you could pay off your home loan.
*This calculator is intended as a guide for illustrative purposes only and is not intended to provide financial advice. The results are based on the information you enter and assume that interest rates and loan terms remain constant for the duration of the loan. It does not account for fees, fluctuating interest rates, or changes to your financial situation over time. Please note that actual repayment amounts may differ and interest rates are subject to change. To talk to one of our team at Squirrel, contact us here. We recommend seeking financial advice about your situation and goals before making any financial decisions.
Could you save by refinancing your mortgage?
Reviewing your mortgage - or switching to another bank - could save you thousands in interest, plus you may even unlock cashback.
Use our refinance calculator below to see how changing your interest rate or loan structure could affect your repayments and the total interest you pay over time. And if the numbers look good, it's worth chatting to one of our advisers to see what options might be available to you.
How much could I save by refinancing?
Pop in a few details about your current mortgage and we'll estimate how much you could save by refinancing.
Why choose Squirrel for your mortgage?
Our advisers aren't incentivised
They get paid the same no matter which lender you end up with, so the only motivation is to make you better off.
Better mortgage rates
We write about $3 billion of home loans per year which gives us negotiating power and access to better rates.
Better technology
Our online application takes less than 10 minutes, and will help us focus on what's most important to you.
More banks, more choices
Our First Home Buyers Guide has everything you need to know
If you're planning on getting your foot in the door of the property market, everything you need to know about deposits, house prices and navigating the process is in our free digital guide.
Wondering about your deposit?
Basically, banks won't lend the full house price amount - you need to be able to put down a deposit, and the more the better. You may be familiar with 20% as the magic number, but the reality is if you're in a strong financial position we can work with as little as 5% deposit.
Calculating your borrowing power
A mortgage calculator is a good place to start when starting to think about how much you can borrow. But there are lots of factors that come into play, and every situation is different. Here are a few things to consider.
Get schooled up so you can make smarter decisions.
The more you understand about borrowing for a house, the more likely you will be to make more informed decisions that work for you. We've written a few articles that we think you'll find helpful.
Wellington property market update - July 2026
Between global volatility and election uncertainty, it feels a bit like we've got one foot on the accelerator and one on the brake at the moment. Despite interest rates starting to track upwards, it's still very much a buyers' market out there in the Capital. Here's the latest from our resident Wellington mortgage expert, Nick Virtue.
Christchurch property market update - July 2026
While the rest of the country takes more of a wait-and-see approach to global and domestic uncertainty, Christchurch continues to run its own race. Here's the latest from our resident Christchurch mortgage expert, Nathan Miglani on what's been happening across the Cantabry housing market.
NZ property market update - July 2026
Dare we say it—the economy looks like it might finally be starting to turn a corner, as strength from the agri sector starts to filter through to other areas, and a solid pipeline of major infrastructure projects looks set to give the construction industry a much needed boost. Here's the latest on interest rates, the NZ economy and housing market.
After a bit more information?
Talk to one of our mortgage experts about your home loan needs today. You can contact us via our website or just give us a call, 7 days a week and we'll be happy to chat. No pressure.
Don’t just take our word for it
Caleb
New Zealand
Excellent communication & Advice. Thank you for all your hard work, appreciate the effort Ari put in for us!
Sophie
New Zealand
Blake provided professional, proactive and helpful advice throughout the mortgage application and home purchasing process. As a first home buyer, he provided invaluable insights and knowledge into the processes involved, empowering me to put my best foot forward and make informed decisions along the way. I really appreciated Blakes approachable and supportive communication, and the user friendly application process that Squirrel provides made applying to and comparing multiple banks easy and straightforward.
Henry Siwanzi
New Zealand
Tessa was amazing in guiding us through the process of purchasing our first home. Working with us from over a year before we made the purchase to get our finances in order before helping us make the purchase when we found the right house.
Viliame
New Zealand
As first-home buyers, we truly appreciated Sudam's guidance, patience, and clear communication every step of the way. He made what initially felt like a stressful process much smoother and much easier to understand. We're very grateful for all the effort Sudam put into helping us secure the right loan structure and competitive rates. Reaching this milestone is incredibly exciting for us, and we're glad to have had his support throughout the entire journey. Thank you, Sudam, for helping make our dream of homeownership a reality.