Free Car Loan Calculator for New Zealanders
Car finance in NZ is usually 11-15% on used cars through dealer finance, and 8-12% on new vehicles through banks. The calculator gives weekly, fortnightly, or monthly repayments and total interest paid.
Your loan
Based on a $25,000 loan at 12.95% over 5 years.
About our Car Loan Calculator
$24,000 of car finance at 11.5% over 5 years costs $528 a month, or $7,679 of interest on top of the principal. The same loan at 8.5% (a typical NZ bank rate for a new car) drops the monthly to $492 and the total interest to $5,500. The 3% rate gap, sustained for five years, is roughly the size of a comprehensive insurance policy or three years of WoF and registration combined.
The calculator runs the same amortising-loan maths used by every NZ car-finance lender. Move the rate slider to bracket the offer in front of you against the typical range. Move the term slider to see the trade-off between lower per-period repayments (longer term, more total interest) and faster payoff (shorter term, less interest, higher per-period bill).
NZ car-finance pricing splits roughly into three tiers. Bank personal loans for new vehicles sit at 8-10%. Dealer finance on new vehicles sits at 9-12% (the dealer adds 1-2% commission to the bank rate). Dealer finance on used vehicles, especially from finance-only dealers, sits at 11-15% and sometimes higher.
How to use it
Enter the amount being financed (purchase price minus deposit minus any trade-in), the offered rate, and the loan term in years.
The default 11.5% reflects a typical used-car dealer-finance rate. For a bank-arranged loan on a new car, lower the rate to 8-10%. For unsecured personal-loan financing of a private-sale car, raise it to 13-15%.
The result panel returns the per-period repayment (weekly, fortnightly, or monthly), total amount repaid over the term, and total interest. The interest figure is what to compare across competing offers; per-period repayments depend on the term, which can mask large differences in total cost.
Why use it
The single biggest car-finance decision is whether to take the dealer’s offer at the point of sale or to arrange a bank or credit-union loan in advance. Dealer offers can look attractive ("$x a week!") but the per-week figure is a function of the loan term as much as the rate. Pulling the rate out and running it through this calculator is the fast way to compare like-for-like.
The same calculator also makes the term trade-off visible. Stretching a $24,000 loan from 5 to 7 years drops the monthly repayment by $90 but adds $2,400 of total interest. Compressing to 3 years lifts the monthly by $250 but saves $4,800. The right term depends on cash flow and how long you intend to keep the car.
For people considering refinancing an existing car loan, the calculator works in both directions. Run the original loan to see the projected total cost, then run the refinance offer to compare; the difference, minus any switching fees, is the saving.
The maths behind it
M = P × r × (1+r)n ÷ ((1+r)n − 1) Same amortising-loan formula as a mortgage, with car-loan typical figures. P is the amount financed (vehicle price minus deposit minus trade-in). r is the periodic rate (annual rate divided by payments per year). n is the total number of payments (years × payments per year). M is the per-period repayment. The calculator shows the result for weekly, fortnightly, or monthly schedules. Total interest is M × n − P.
Worked example
Hone, auto mechanic in Levin, financing a $28,000 used Hilux at 11.5% over 5 years.
Hone is buying a 2020 Toyota Hilux from a Levin dealer for $28,000. He puts a $4,000 deposit on it and finances the remaining $24,000 through the dealer-arranged finance company at 11.5% over 5 years.
Monthly repayments at 11.5% over 60 months: $528. Total paid back: $31,679. Total interest: $7,679, or 32% of the financed amount.
Switching to fortnightly repayments at half the monthly figure ($264) would clear the loan a few months early and shave around $200 of interest, but the per-fortnight feel is the same. Switching to weekly ($132) is similar in total cost.
Refinancing the same loan at a bank’s personal-loan rate of 9.5% over the remaining 4 years (after 1 year of the original) would drop the monthly to about $510 and save around $600 of remaining interest, before any establishment fee on the new loan. Whether the saving covers the fee depends on the specific bank.
Things to keep in mind
- Dealer finance is not always the cheapest. Dealer-arranged finance is convenient but typically prices 1-3 percentage points above what NZ banks charge for an equivalent personal loan or secured car loan. The convenience premium is the dealer’s commission, baked into the rate. Compare against ANZ, ASB, BNZ, Westpac, Kiwibank, and the credit unions before signing.
- Establishment and ongoing fees. Most NZ car-loan products charge a $200-$400 establishment fee plus a $5-$10 monthly admin fee. Over a 5-year loan, fees alone can add $500-$1,000 to the total cost. The calculator’s figure is interest only.
- Secured vs unsecured. Most car loans are secured against the vehicle, meaning the lender can repossess and sell if you default. Unsecured personal loans typically carry rates 2-4 percentage points higher because the lender takes more risk.
- Balloon payments shift the maths. Some dealer finance offers a "balloon" lump-sum at the end of the loan (often 30-40% of the original price), which lowers the per-period repayment but leaves a large amount owing at the end. Balloon arrangements suit traders cycling through vehicles; for buyers planning to keep the car, the standard amortising structure is usually simpler.
- Insurance and registration are separate. Comprehensive insurance (around $80-$150 a month for a typical NZ car), petrol or diesel, registration, WoF, and servicing are all on top of the loan repayment. Budget for the all-in monthly cost of running the car, not just the loan.
NZ-specific notes
FAQs
What car-loan rate should I expect?
NZ car-finance rates typically run 8-12% on new vehicles through bank-arranged finance, and 11-15% on used vehicles through dealer finance. Credit unions and savings institutions can sometimes beat these rates by 1-2 percentage points. The actual rate depends on credit history, deposit size, and whether the loan is secured against the vehicle.
Should I take dealer finance or arrange my own?
Dealer finance is convenient but priced for the dealer’s commission. Arranging a bank loan or credit-union loan in advance is usually cheaper, with the trade-off of more paperwork and pre-approval before you find the car. Some buyers use the dealer’s offer as a benchmark, then ask the bank to beat it.
Is a balloon payment a good idea?
It depends on your plan with the car. Balloon arrangements (30-40% of the price owing as a lump at the end) lower the per-period repayment but leave a large amount due. They suit drivers planning to trade in or refinance at the end of the term. For drivers planning to keep the car long-term, the standard amortising loan is usually simpler.
Can I pay the loan off early?
Yes, NZ car loans can usually be paid off in full at any time. Most contracts allow extra payments without penalty; some charge a small early-repayment fee on the unpaid interest. Check the disclosure document for the specific lender.
What about secured vs unsecured loans?
A secured car loan uses the vehicle as collateral, which lowers the rate. An unsecured personal loan does not, and rates are 2-4 percentage points higher to compensate the lender. For a $25,000 loan over 5 years, the rate gap costs $1,000-$2,500 in extra interest.
How does the calculator handle GST on imported cars?
GST on imported vehicles is paid at the border by the importer (usually the dealer) and is built into the sale price. The calculator finances the agreed sale price, with GST already included. There is no separate GST line on the loan.
What happens if I lose my job?
Most lenders work with borrowers facing temporary hardship, often by extending the term or pausing repayments for a few months. Loan-protection insurance (sold by some dealers) covers repayments for a defined period if the borrower loses their job involuntarily; the cost is usually 5-10% of the loan amount upfront and is rarely worth it for short-term loans.
References & sources
- Commerce Commission, "Lending decisions on mortgages, credit cards and personal loans". comcom.govt.nz
- Commerce Commission, "Responsible lending code". comcom.govt.nz
- Te Ara Ahunga Ora Retirement Commission, "Sorted website (car-finance explainer)". sorted.org.nz
- NZTA Waka Kotahi, "Buying, selling and importing vehicles". nzta.govt.nz