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Calculate vehicle finance repayments, total interest, and compare loan terms. Includes balloon payments, trade-in value, and stamp duty for all Australian states.
Loan term
5 years
Repayment frequency
State / Territory
For vehicle stamp duty (transfer duty) calculation
Loan Repayment Results
Repayment amount
per month
$0.00
Repayment frequency
12 payments per year
Monthly
Total repayments
Over 5 years
$0.00
Total interest paid
Interest cost over loan life
$0.00
Loan amount
Vehicle price minus deposit
$0.00
Stamp duty on vehicle
Transfer duty in NSW (included in loan)
$0.00
Total cost of ownership
Vehicle + interest + stamp duty
$0.00
Loan Term Comparison
| 3 years | 5 years | 7 years | |
|---|---|---|---|
| Repayment (monthly) | $0.00 | $0.00 | $0.00 |
| Total interest | $0.00 | $0.00 | $0.00 |
| Total cost | $0.00 | $0.00 | $0.00 |
Shorter terms mean higher repayments but significantly less interest overall.
Quick Reference — 7.5% over 5 years (monthly)
| Vehicle Price | Monthly Repayment | Total Interest | Total Paid |
|---|---|---|---|
| $20,000.00 | $400.76 | $4,045.54 | $24,045.54 |
| $30,000.00 | $601.14 | $6,068.31 | $36,068.31 |
| $40,000.00 | $801.52 | $8,091.08 | $48,091.08 |
| $50,000.00 | $1,001.90 | $10,113.85 | $60,113.85 |
| $60,000.00 | $1,202.28 | $12,136.61 | $72,136.61 |
| $80,000.00 | $1,603.04 | $16,182.15 | $96,182.15 |
Click any row to load it into the calculator. Excludes stamp duty and deposit.
How car loans work in Australia
Secured loans use the vehicle as collateral, resulting in lower interest rates (typically 5-9%). Unsecured personal loans don't require collateral but charge higher rates (8-15%+). Most dealer finance is secured.
Fixed rate loans lock your rate for the term — repayments never change. Variable rate loans may start lower but can increase (or decrease) with market conditions.
Balloon payments explained
A balloon payment is a lump sum due at the end of your loan term. It reduces your regular repayments during the loan but you must pay the full balloon amount when the term ends.
Common in novated leases and chattel mortgages. At the end, you can pay the balloon, refinance it, trade in the vehicle, or (with a lease) hand back the car. Balloons typically range from 10-50% of the vehicle price.
What affects your rate
The formulas
Standard amortisation:
PMT = P x r / (1 - (1+r)^-n)
P = principal, r = periodic rate, n = total periods
With balloon (B):
PMT = (P - B/(1+r)^n) x r / (1 - (1+r)^-n)
Total interest:
Interest = (PMT x n + B) - P
Car loan repayments are calculated using standard amortisation. The key variables are the loan amount (vehicle price minus deposit, plus any financed costs like stamp duty), the annual interest rate, the loan term in years, and the repayment frequency. Weekly repayments use 52 periods per year, fortnightly uses 26, and monthly uses 12. A shorter loan term means higher repayments but significantly less total interest. For example, a $40,000 car loan at 7.5% over 5 years costs around $8,000 in interest, but over 7 years that climbs to around $11,500.
When you buy a vehicle in Australia, you pay stamp duty (transfer duty) to your state or territory government. This is calculated on the vehicle's purchase price or market value, whichever is higher. Rates vary by state: NSW charges $3 per $100 up to $45,000 then $5 per $100 above; VIC uses 4.2% with a luxury surcharge above $69,152; QLD charges 3% up to $100,000 then 5% on the excess; WA charges 2.75% for most vehicles but jumps to 6.5% for vehicles over $50,000. SA, TAS, NT, and ACT generally charge around 3%. Stamp duty is payable on registration transfer and is separate from GST.