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.
Rodney’s Ravings: How fundamental economics shapes regional house prices
There's a reason why house prices are performing so differently across various parts of the country right now—and it all comes down to that good old economic principle of supply and demand. Guest writer Rodney Dickens dives into the numbers.
NZ property market update - February 2026
Admittedly, some of the data we're seeing out there still doesn't look all that flash—but we promise, there *are* definite signs that we're on the road to a slow and steady recovery. Here's the latest on what's been happening with interest rates, NZ property market, and the domestic and global economy in recent weeks.
Christchurch property market update - February 2026
We're now well and truly back into the swing of things post the summer break—and Canterbury has kicked off 2026 with some real momentum. Here's the latest from our resident Christchurch mortgage expert, Nathan Miglani, on interest rates and the local property and lending 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
Tim bahlmann
New Zealand
Thanks Mark
Darren
New Zealand
Very responsive and quick to act. Great advice and made it easy even with some tricky property issues that made lending much more challenging to obtain. I was only able to buy this property because we were the only ones (out of many serious purchasers) that overcame the issues and obtained suitable lending and insurance. Other deals had fallen through because the banks would not lend more than 50% of the property value (ignoring the dwellings).
Anonymous
New Zealand
Adam Clark looks after me really well. I sometimes have a lot of questions as I'm a first time home owner and he's always been patient an able to help and advise and together we have gotten some good outcomes so far. I highly recommend Adam
Amy & Jakeb
New Zealand
Ange was great running our numbers and made us feel at ease throughout the whole process. Our process between the first viewing and settling was only 6 week and Ange made everything happen very smoothly in the short timeframe we gave. Her communication was great. We are very happy. The life insurance referral was also a great process for us too.