The Finance Algorithm

Car Loan Calculator

Calculate your car loan repayments, total interest, and compare loan terms

Updated October 2026Built and checked by MaverickHow it's calculatedReport an error

Your numbers

Updates as you type
$
$40k

Purchase price of the vehicle

$
$5k

Upfront payment or trade-in value

%
7.5%

The rate on your quote, or a rate from the car loan rates lenders publish. The rate you're offered depends on the lender's assessment

5y

How long to repay the loan

%
0%

Optional lump sum at end of loan (% of vehicle price)

The button asks our AI to explain these figures in words.

Car loan

Repayment

$701/month

≈ $701/mo equivalent

Loan amount

$35,000

$5,000 deposit

Total interest

$7,080

over 5 years

Total cost

$42,080

principal + interest

Loan balance over time

Loan amortises to zero across the term: early years carry more interest, later years more principal.

$0$7,252$14,503$21,755$29,006Yr 1Yr 2Yr 3Yr 4Yr 5

Where each year's payments go

Early years skew heavily toward interest; the ratio flips as the balance falls.

  • Principal
  • Interest
$8,416y1$8,416y2$8,416y3$8,416y4$8,416y5

Repayment at ±2% from 7.5%

On this loan, a rate 1 percentage point higher adds $17/month to the repayment.

$6695.5%$6856.5%$7017.5%$7188.5%$7359.5%

Same loan, different terms

Longer terms lower the repayment but cost much more in total interest.

$3,0371yr$1,0893yr$7015yr$5377yr
Compare beyond the dealer. Moneysmart suggests comparing dealer finance with other lenders, such as your bank, on the comparison rate for the same amount and term. Approval in principle from another lender gives you a rate to compare the dealer's offer against.

How it works

Work out your car loan repayments from the vehicle price, deposit, interest rate, loan term and repayment frequency, with an optional balloon payment at the end. The calculator shows the repayment, the total interest, how the balance falls each year, and how the repayment changes with the rate and the term. Car loans usually run from one to seven years. Lenders must give you a comparison rate, which combines the interest rate with most fees, so compare loans of the same amount and term on that figure. For current rates, the car loan rates page on this site lists what banks, lenders and carmakers' finance companies publish under the Consumer Data Right.

  1. 1Enter the vehicle purchase price.
  2. 2Add your deposit or trade-in value.
  3. 3Set the interest rate from your quote or the published rates.
  4. 4Choose your loan term and repayment frequency.
  5. 5Add a balloon if the loan has one, and compare the result with and without it.

The figures today

As of 7 November 2026, the lowest car loan rate from a bank or lender is 5.74%, from Westpac's Car Loan, while the typical best across 42 institutions is 6.99%. The lowest carmaker finance rate is 2.70%, from Chery Motor Finance's Chery 4.46% EV Comparison Rate Offer, while the typical best across 12 institutions is 4.99%.

Worked examples

New SUV Purchase

Sarah is buying a $45,000 SUV with a $10,000 deposit at 7.5% over 5 years.

Vehicle price
$45,000
Deposit / trade-in
$10,000
Interest rate (% a year)
7.5%
Loan term (years)
5

Loan amount: $35,000. Monthly repayment: $701. Total interest: $7,080, so she repays $42,080 on the loan.

Budget Used Car

Tom is buying an $18,000 used car with a $3,000 deposit at 9% over 3 years.

Vehicle price
$18,000
Deposit / trade-in
$3,000
Interest rate (% a year)
9%
Loan term (years)
3

Loan amount: $15,000. Monthly repayment: $477. Total interest: $2,172. Over 5 years the repayment would fall to $311, but the interest would rise to $3,683.

Questions people ask

Where can I see current car loan rates?
The car loan rates page on this site lists the rates banks, lenders and carmakers' finance companies publish under the Consumer Data Right, with comparison rates and fees. The rate you're offered depends on the lender's assessment of you, the car and the loan.
What's the difference between a 5 and 7 year car loan?
On $35,000 at 7.5%, a 5-year loan costs $701 a month and $7,080 in interest. Over 7 years the repayment falls to $537 a month, but the interest rises to $10,095. The calculator's term chart shows the same trade-off for your loan.
How does dealer finance compare?
Moneysmart suggests comparing what a dealer offers with other lenders, such as your bank. Since ASIC banned flex commissions on 1 November 2018, the lender sets the interest rate and the dealer can't raise it to earn a bigger commission, though a dealer can still reduce it.

The terms, in plain English

Balloon Payment
A lump sum due at the end of the loan. It lowers the regular repayments, but you pay interest on it for the whole term.
Secured Car Loan
A loan where the car is security. If you can't repay, the lender can repossess and sell it.
Comparison Rate
A rate that combines the interest rate with most fees and charges, for comparing loans of the same amount and term.
On-Road Costs
Costs on top of the car's price such as stamp duty, registration, CTP insurance and dealer delivery.

Official sources