Buying a car is exciting — working out what you can actually afford to borrow for it shouldn't feel like the hard part.
In New Zealand, every lender has to work out your borrowing power the same basic way: what you earn, what you spend, and what you already owe.
Once you know how that works, the number stops feeling like a mystery.
Here's how it all fits together, and what actually moves the needle on how much you can borrow.
Instant Finance car loans range from $500 to $50,000
Fixed interest rates from 9.95% to 29.95% p.a., personalised to your circumstances
Loan terms from 3 months to 7 years
No deposit needed — it's a personal loan, so you can borrow the full purchase price
Covers both dealer and private sale vehicle purchases
Pre-approval is available, so you know your budget before you shop
Once approved and accepted, funds are in your account within 24 hours
Try the personal loan calculator for repayment estimates based on your own numbers
As a responsible lender, we don't want to see anyone get in over their head. Before we talk numbers, we want to be confident a loan actually fits your life — not just today, but for the whole term.
There are legislative conditions here too. The Credit Contracts and Consumer Finance Act (CCCFA) requires every lender to check affordability before saying yes, which aligns with our own approach to responsible lending.
That check comes down to three things:
Your verified income — what you actually earn, confirmed through payslips or bank statements, not just what you tell us.
Your regular expenses — rent or mortgage, bills, groceries, insurance, subscriptions — the everyday cost of running your life.
Your existing debt — other loans, credit cards, or hire purchase repayments you're already covering.
We look at all three together, alongside three months of bank statements, before we talk numbers.
It's a bit more paperwork upfront, but it means we're confident you can manage the loan comfortably — and if something doesn't quite stack up, we'd rather have an honest conversation about it than let you take on more than you should.
You may have heard that lenders use a "debt-to-income" rule — often somewhere around 30–40% of take-home pay going toward debt repayments.
That's a general guideline used across the NZ lending industry as a rough sense-check, not a fixed formula any one lender is locked into, and it's not the whole picture on its own.
We don't run your application against a single ratio and stop there.
A single ratio doesn't account for your full circumstances, which is why we look at the complete picture rather than one figure in isolation. Rather than land on a rough figure here, the fastest way to see what's realistic for you is to run your own numbers through the loan calculator.
Or, if you'd rather just talk it through, give our team a call. There's no pressure — we'd genuinely rather spend ten minutes understanding your situation properly than have you guess at a number that doesn't hold up.
The length of your loan changes your weekly repayment — and that changes how much you can comfortably take on.
Shorter terms (say, 3 months to 2 years): higher weekly repayments, but less total interest over the life of the loan.
Longer terms (up to 7 years): lower weekly repayments, which can open up a bigger loan amount within the same budget — but more total interest paid over time.
As a real example: borrowing $10,000 over 3 years at 19.95% p.a. works out to 156 weekly instalments of $90.25, including interest, a $220 establishment fee, a $7.70 ID verification fee, and a $3 administration fee per instalment. Total interest comes to $3,383.30, with total fees of $695.70 — a total payable of $14,079.00 over the full term.
Your own rate, term, and fees will depend on your circumstances, so the calculator is the best way to see your actual numbers.
We'll never stretch a term out further than makes sense just to make a bigger number look affordable on paper — the goal is a repayment that fits your life, not the other way round.
If you're not sure whether a shorter or longer term makes more sense for you, that's exactly the kind of thing worth talking through with our team rather than guessing — we're happy to walk through a few different scenarios together.
A steady income — the longer and more stable your employment history, the easier it is for us to verify affordability.
A clean recent payment history — on this loan or others.
Lower existing debt — fewer other repayments competing for the same income.
A deposit or trade-in, if you have one — reduces how much you need to borrow in the first place.
High existing debt or repayment commitments — less room left in your budget for a new loan.
Irregular or hard-to-verify income — casual work or recent self-employment can mean we need a bit more documentation to confirm affordability.
A patchy payment history — this affects the rate and terms we can offer, not just the amount.
Missed repayments on any current loan — a default interest rate applies to overdue payments, which adds real cost on top of what you already owe.
None of these are automatic disqualifiers — they're simply part of the full picture we look at.
A less-than-perfect credit history doesn't automatically rule you out. If your income looks a bit different to the "standard" example, that's genuinely common, and we may also be able to help if you're on a benefit, as long as you meet our responsible lending criteria. It's worth talking to us directly rather than assuming the door's closed.
We'd much rather have that conversation upfront than have you miss out on something that might actually work.
In most cases, no. Because an Instant Finance car loan is a personal loan rather than traditional dealer finance, you can borrow the full purchase price — there's no dealer-style deposit requirement built into the product.
That said, if you do have a deposit or trade-in to put toward the purchase, it reduces how much you need to borrow, which can mean a lower rate, shorter term, or smaller weekly repayment.
Pre-approval means applying before you start shopping, so you know exactly how much you can spend. You're approved up to a set amount, and your loan is then secured against the car you choose. That means you can shop knowing your budget, just like a cash buyer.
If the car you pick costs less than your pre-approval, you may be able to use the difference for something else; just let us know what it's for. And if you don't find the right car, there's no cost to you.
A car loan can be secured (where the vehicle itself is used as security for the loan) or unsecured (where it isn't).
Securing the loan against the car gives the lender a lower-risk position — if repayments aren't kept up, the vehicle can be used to recover the debt — which can mean access to a more favourable rate or a larger loan amount than an unsecured loan might allow.
With a secured loan, missed repayments put the vehicle itself at risk, not just your credit record.
An unsecured loan doesn't use the vehicle as security, so it isn't at risk if repayments are missed — but the trade-off is typically a higher rate, since the lender is carrying more risk. Read more on how this works on our secured loans page.
If you already have a car loan with us, you don't need to pay it off before changing cars.
As long as the new car is worth the same or more, your loan can usually move across to it (a contract variation fee applies, and there may be PPSR fees too).
If the new car costs more, you may be able to top up your loan, as long as the extra repayments fit your budget.
Find out more about selling a car with finance owing.
More car guides: How to finance a car in NZ · How to buy a car · Our car loans
Some of this is easier as a conversation than a page of text — and that's completely fine.
If you'd rather talk through your situation with a real person before you dive into an application, our team is genuinely happy to do that.
We've been doing this for over 50 years, and one thing hasn't changed: we'd rather spend a bit of extra time upfront getting it right than rush you into something that doesn't fit. Get in touch with our team whenever suits.
It depends on your income, regular expenses and existing debt — the three things every responsible lender has to check under the CCCFA. With Instant Finance, car loans range from $500 to $50,000, but your own borrowing power depends on what you can comfortably afford to repay. The quickest way to get a real sense of your number is the loan calculator or a chat with our team.
There's no fixed minimum — what matters is that your income, once your regular expenses and existing debts are accounted for, leaves enough room to comfortably cover the new repayments. We verify income through payslips or bank statements as part of every application, rather than working off a stated figure alone.
In most cases, yes. Because it's a personal loan rather than dealer finance, you can typically borrow the full purchase price without needing a deposit upfront. If you do have a deposit or trade-in, it simply reduces how much you need to borrow.
Loan terms with Instant Finance run from 3 months to 7 years. A longer term lowers your weekly repayment, which can mean a larger loan fits your budget — but you'll pay more in total interest over time. A shorter term costs more per week but less overall. The calculator lets you compare terms side by side using your own numbers.
Yes, but it's one part of a bigger picture, not the whole decision. A less-than-perfect credit history can affect your rate or the amount on offer, but it doesn't automatically rule you out. We look at your whole situation, including what you can comfortably afford to repay now.
Yes. For a car loan, you'll need a current NZ driver licence, because you need to be able to drive the car legally. A passport or other ID isn't enough on its own.
Yes. You can apply before you start shopping and be approved up to a set amount, so you know your budget and can shop like a cash buyer. Your loan is then secured against the car you choose, and there's no cost to you if you don't find the right car.
