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Car Finance Calculator - Calculate Your Repayments

Looking to buy a new car? We’ll do the maths for you and list must-know tips to help you reduce the interest rate you pay.
Updated 2 August 2026
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​Our Calculator Makes The Numbers Clear
If you want car finance or a car loan, our easy to use repayment calculator will help you work out you will pay weekly, fortnightly or monthly, and what each lender may charge.

Christopher Walsh, MoneyHub's Founder and Head of Research, shares his views on car finance:
  • Car finance can get be a great deal or very expensive - please avoid rushing into a "bad deal" by carefully considering your options. I've written about the risks in Stuff.co.nz and continue to challenge the market.
  • Our calculator uses lending rates and is designed to help you see the options available; we believe comparing online is the best place to start. Once you're in a car yard, there's very little you can do - the pressure is high, and the temptation to 'drive it away today' is huge, but so is the risk of overpaying for your car loan.
  • Our car finance comparison research highlighted three leading car finance lenders that reliably and consistently offer fair interest rates to the majority of borrowers. 
  • We suggest contacting dedicated car loan specialist Simplify - their team has a proven track record of offering market-leading interest rates and terms.
  • Low-fee personal lenders such as Harmoney offer car lending and offers a 100% online application process.
  • If you are thinking about getting a guarantor on a car loan, our Car Loan Guarantors guide outlines what you need to know.
  • Advertising Disclosure: We may receive a commission if you take out a loan, but this does not influence our shortlist. Interest rates vary based on each borrower. 
Christopher Walsh
MoneyHub Founder

Car Finance Calculator

Calculate Your Interest and Repayment Costs
To find out what you will pay monthly and in total for your car finance, simply insert:
  1. The loan amount (the total amount of money you want to borrow)
  2. The loan length (how long you want to repay the loan)

Know this first:
  • The repayment amounts exclude any upfront fees and/or ongoing fees a lender may charge.
  • The interest rates below represent each lender's lowest rate. This is not necessarily the rate you will receive, and for this reason, we suggest considering your options carefully and arranging multiple quotes.

June Alert: Simplify Slashes Rates - now from 7.25% p.a.
For borrowers with decent credit and affordability (we believe if you're reading and comparing on MoneyHub, there's a greater chance that's you), Simplify just dropped its rates to the lowest we've seen in some time:
  • From 7.25% p.a. for new Toyota and Ford vehicles
  • From 7.25% p.a. for all other vehicles

Many readers checking multiple lenders and reading guides already have the credit profile these rates require - you can confirm this in 1-2 minutes using Simplify

Enter your loan details

Repayment frequency
Important: Calculations use the standard amortisation formula and reflect the interest rate only. Establishment fees, monthly account fees, and other lender charges are not included and may apply on top of these figures. Interest rates shown are advertised rates and may vary based on your credit profile, the loan amount, and the asset being financed. Always confirm current rates and fees directly with the lender before applying.
Simplify: The Car Finance Experts Who Save You Money - Proudly a Trusted MoneyHub Partner

Why 3,000+ New Zealanders Choose Simplify:
Unlike traditional lenders who profit from your interest payments, Simplify works differently. As New Zealand's leading car finance broker, they negotiate wholesale rates with multiple lenders and pass the savings directly to you, typically 4-8% lower than dealer finance.

The Simplify Difference:
  • Pre-approval in 60 minutes: Lock in your rate before you shop, turning you into a cash buyer with negotiating power
  • No hidden dealer markups: Direct access to wholesale rates means you save $3,000-$10,000 over your loan term with lower interest rates
  • Human experts, not algorithms: Real consultants who understand cars and finance
  • Weekend service: Found your dream car on Saturday? Simplify's team works weekends to secure it

Real Impact: On a typical $30,000 loan, we estimate Simplify customers could save $4,000+ compared to dealer finance. But the real win? Walking into any dealership knowing exactly what you can afford and what rate you'll pay. No pressure, no games, no surprise fees and no rip-off financing.

Simplify's trusted service appeals to:
  • Smart buyers who research before purchasing
  • Anyone who's been burned by dealer finance before
  • Self-employed or contract workers banks and other lenders often reject
  • Those financing unique vehicles (classics, EVs, imports)
  • ​Drivers who want proven results - read our Simplify customer reviews

"Simplify found me 7.95% when the dealer wanted 14.95%. That's $4,000 saved on my Hilux. More importantly, they explained everything in plain English and worked over the weekend to secure my pre-approval."
  • MoneyHub reader, July 2025​
​
June Alert: Simplify Slashes Rates - now from 7.25% p.a.
For borrowers with decent credit and affordability (we believe if you're reading and comparing on MoneyHub, there's a greater chance that's you), Simplify just dropped its rates to the lowest we've seen in some time:
  • From 7.25% p.a. for new Toyota and Ford vehicles
  • From 7.25% p.a. for all other vehicles

Many readers checking multiple lenders and reading guides already have the credit profile these rates require - you can confirm this in 1-2 minutes using Simplify
Important: Before you compare lenders, it pays to know what a car loan actually costs you, not just the weekly repayment a dealer or lender quotes.
  • Our calculator below strips it back to the numbers that matter - enter the amount you'd borrow, the rate you've been quoted and the term, switch between weekly, fortnightly and monthly, and you'll see your repayment alongside the total interest and how much that adds on top of the purchase price.
  • There's no lender data built in - we suggest you use it to work out what you can comfortably afford before you talk to anyone.

Car Loan Repayment Calculator

See your repayments and the total cost of a car loan. Change any figure to match your own situation.

Your loan
$
% p.a.
years
Fees (optional)
$
In partnership with Simplify, MoneyHub's favourite car loan broker

Like that number? Turn it into a real quote

You've run the estimate - now see the actual rates and weekly repayments real lenders would offer you. With Simplify, a licensed New Zealand finance broker, you can compare across all the major car lenders in a couple of minutes.

Get my rate
Free quote, no obligation All major car lenders Feefo 4.9/5 (3,000+ reviews) A decision in minutes Trusted, award-winning broker Popular with MoneyHub readers
Our View
  • A fast way to see the spread of rates across lenders - better than applying to one lender blind.
  • Look at the comparison rate, not just the weekly number. A low weekly payment over a longer term can cost you far more overall.
  • Check the rate you're offered against your own bank before you sign.
  • Simplify is one strong option, not the only place finance exists.

How this works. MoneyHub is independent. We're not a lender, broker or financial adviser, and nothing here is personalised financial advice. We've partnered with Simplify, a licensed New Zealand Financial Service Provider, and we earn a fee if you take out a loan through them. This never changes the rate or fees you're offered.

Rates & privacy

Quotes shown are indicative only. Your actual rate depends on your circumstances and currently ranges from 7.25% to 29.95% p.a.

When you request a quote, your details are shared with Simplify so they can assess your options, and if you proceed they may share relevant information with their panel of lenders.

Car Finance Calculator Frequently Asked Questions

How much should I borrow to buy a new car?

We suggest spending no more than 10% of your monthly pre-tax income on car repayments. For example, if you earn $30,000 a year after tax, that's around $300 per month. This leaves you money for essential expenses and everyday items, as car insurance, WOF and petrol.

How accurate is the Car Finance Calculator?

The calculations are estimates based on listed lenders' and brokers' current starting interest rates. Please remember that rates may vary based on affordability, loan preference and general market conditions. Because there are many variables, we suggest arranging several quotes.

What should I consider before applying for car finance?

You'll need to consider your budget, the total cost of the loan (including interest and fees), the loan term, and the lender's reliability. Reading MoneyHub's car finance guide for detailed information will also help you avoid being overcharged or stuck in a poor-value finance deal.

Does the Car Finance Calculator consider fees?

The calculator focuses on interest rates and repayments. You should also consider any upfront or ongoing fees a lender may charge, which can affect the total cost of the loan.

How can I get the best car finance deal?

Compare offers from multiple lenders, negotiate terms, and consider all aspects of the loan, not just the interest rate. Reading MoneyHub's guides and reviews can also provide valuable insights.

Can the Car Finance Calculator help me decide between a new and used car?

Yes - the Car Finance Calculator compares the ongoing costs of financing new and used cars. By inputting different loan amounts and terms, you can see how choosing a new or used vehicle affects your monthly payments and the total interest paid over the loan's life. 

This comparison is crucial, as new cars tend to depreciate faster but may have lower interest rates, while used cars might be cheaper overall but could come with higher interest rates.
Related Guides: Get the Best Car and Car Finance Deal

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​Advertising Disclosure: MoneyHub may receive a payment if you make a purchase on our website. Such commercial arrangements have no influence on our independent reviews of financial products. Please refer to our advertising policy for more details.