Car Loan Calculators Australia — Every Tool You Need Before You Sign Anything
Before you commit to a car loan in Australia, the most expensive mistake you can make is skipping the maths. LoanGorilla's suite of twelve free car loan calculators covers every stage of the borrowing journey, from working out what you can afford before you start, to figuring out whether refinancing your existing loan is worth the paperwork. No credit check required. No personal details needed to run the numbers.
Compare car loan options with LoanGorilla — 40+ lenders. See real rates. Real repayments. No hard credit pull.
Compare NowWhy run the numbers before you borrow?
Car finance is sold on monthly repayments. That's no accident, a lower weekly number feels manageable in the moment and obscures the total cost of the loan. The gap between a smartly structured car loan and a poorly structured one can run to thousands of dollars over the life of the deal, all of it invisible if you only ever look at the fortnightly figure.
These calculators are built to make the full picture visible: total interest, total cost, break-even points for refinancing, real savings versus "savings" that evaporate when you look at the term. Use them as a filter before comparing lenders, then compare lenders with LoanGorilla once the structure makes sense on paper.
All 12 calculators at a glance
| Calculator | Best used for | Link |
|---|---|---|
| Repayment Calculator | Work backwards from a target repayment to find your maximum loan amount. | Open → |
| Borrowing Power Calculator | Estimate how much you can actually borrow based on income and expenses. | Open → |
| Balloon Payment Calculator | See how a balloon changes repayments and total cost. | Open → |
| Comparison Rate Calculator | Understand the true cost once fees are included. | Open → |
| Early Payout Calculator | Estimate your payout figure and interest savings. | Open → |
| Refinance Calculator | Compare your current loan against a potential refinance. | Open → |
| Novated Lease Calculator | Model salary packaging mechanics against a standard car loan. | Open → |
| Trade-In Equity Calculator | Check your trade-in equity and net finance amount. | Open → |
| Used Car Loan Calculator | Designed for used car purchases — factors in higher rates and shorter terms typical of used finance. | Open → |
| Car Lease vs Buy Calculator | Compare the total cost of ownership against leasing the same vehicle over the same period. | Coming Soon |
| Electric Vehicle Loan Calculator | Compare EV-specific loan products, factor in fuel savings, and see the true cost vs petrol. | Open → |
| Novated Lease vs Car Loan Calculator | Side-by-side net cost of a novated lease vs a standard car loan — EV FBT exemption, ECM and tax savings modelled. | Open → |
Planning your loan
These three calculators answer the questions you should ask before you start comparing rates.
1. Car Loan Calculator
→ Open Car Loan CalculatorThe starting point for almost every car loan conversation. Enter a loan amount, interest rate, and term, get back your estimated weekly, fortnightly, and monthly repayments, total interest cost, and total amount repaid.
Use it when:
- You know the car price and want to see what the repayments will look like at different rates and terms.
- You're comparing multiple loan offers and want to see the total cost difference, not just the monthly number.
- You want to stress-test your repayments, what happens if the rate is 7% instead of 5.9%? What if the term is 5 years instead of 7?
Key features: Optional balloon payment field; weekly/fortnightly/monthly toggle; principal-vs-interest breakdown; total interest visualisation.
Particularly useful for: New car loans, used car loans, anyone comparing dealer finance against independent lenders.
2. Car Loan Repayment Calculator
→ Open Repayment CalculatorThis one works backwards. Instead of starting with a loan amount, you start with a maximum monthly repayment you can afford, and the calculator tells you how much you can borrow at different rates and terms.
Use it when:
- You have a firm monthly budget and want to know the maximum loan amount that fits without stretching.
- You're working out how much car you can realistically afford, not how much you can theoretically get approved for.
- You want to see how changing the term or rate shifts your maximum borrowing capacity.
3. Car Loan Borrowing Power Calculator
→ Open Borrowing Power CalculatorThe most honest calculator in the suite. It asks about your actual income and expenses, not just what you'd like to borrow, and estimates your real borrowing capacity based on what's left after your financial commitments.
Use it when:
- You want to know your number before you start looking at cars, so you're shopping in a realistic price range.
- You're pre-qualifying your own situation before applying, to see roughly what lenders will see.
- You want to understand how existing debts, rent, or other commitments affect your car finance capacity.
Key features: Income and expense inputs; surplus income calculation; borrowing capacity across different terms; debt-to-income context.
Particularly useful for: Car loan pre-approval preparation, first car loans, anyone who wants to borrow responsibly rather than at the maximum approved amount.
Understanding costs
These three calculators help you see past the headline rate to the real cost structure of any loan.
4. Car Loan Balloon Payment Calculator
→ Open Balloon Payment CalculatorA balloon payment (also called a residual) is a lump sum due at the end of a car loan. It lowers your regular repayments during the term, but it doesn't make the loan cheaper. This calculator shows you exactly what adding a balloon does to your total interest cost and end-of-loan liability.
Use it when:
- A lender or dealer has offered you a loan with a balloon and you want to see what it really costs.
- You're considering using a balloon to lower repayments and want to model the trade-off honestly.
- You want to compare a loan with and without a balloon on total cost, not just monthly repayment.
Key features: Side-by-side balloon vs no-balloon comparison; total interest impact; clear "you'll owe $X at the end" output.
Particularly useful for: Anyone who's been offered a balloon by a dealer, secured car loan borrowers, novated lease residual planning (the mechanics are similar).
5. Car Loan Comparison Rate Calculator
→ Open Comparison Rate CalculatorThe comparison rate is the most important number on a car loan offer, more useful than the advertised rate because it includes most standard fees. This calculator helps you understand what the comparison rate actually represents and how to use it to compare two or more offers on a level footing.
Use it when:
- You've been quoted an advertised rate and want to understand what the comparison rate adds to the picture.
- You want to calculate an estimated comparison rate for a loan where it isn't clearly disclosed.
- You're comparing two loans with different fee structures and want to know which is genuinely cheaper.
Key features: Comparison rate derivation; fee impact modelling; clear explanation of what's included and what's not.
Particularly useful for: Anyone comparing low rate car loans, borrowers who've encountered loans where the advertised rate looks great but the fees are high.
6. Car Loan Early Payout Calculator
→ Open Early Payout CalculatorIf you're considering paying out your car loan early, whether from a windfall, a bonus, or because you're selling the car, this calculator shows you the exact financial impact: interest saved, any early payout fees, and whether clearing the debt now is worth it.
Use it when:
- You have spare cash and want to know the real benefit of paying out the loan versus leaving it running.
- You're selling your car and need to understand the payout figure and what happens to any surplus.
- You're weighing early payout against refinancing to decide which move leaves you better off.
Key features: Current balance and rate inputs; early payout fee field; interest saving calculation; comparison of early payout vs staying on current terms.
Particularly useful for: Mid-loan borrowers with improving cashflow, anyone selling their vehicle before the loan ends, borrowers deciding between early payout and refinancing.
7. Car Loan Refinance Calculator
→ Open Refinance CalculatorThe most important calculator if you already have a car loan. It compares your current loan structure against a potential refinance, showing you the real dollar outcome (saving or extra cost) after fees, break costs, and term changes are included. Because a lower monthly repayment is not automatically a cheaper loan.
Use it when:
- You're overpaying on a dealer loan you took out under time pressure and want to know if switching makes financial sense.
- Your credit profile has improved since you took the original loan and you think you can access a better rate.
- You've seen a lower rate advertised and want to check whether it's actually worth switching after fees.
- A balloon payment is coming due and you're considering rolling it into a new loan.
8. Novated Lease Calculator
Open Novated Lease Calculator →The only calculator in the suite that goes beyond a standard loan to model the salary packaging mechanics of a novated lease. Enter your gross salary, the vehicle price, lease term, estimated running costs, and whether the vehicle qualifies for the EV FBT exemption, and get a full after-tax cost comparison against buying the same car with a standard car loan.
Use it when:
- Your employer offers novated leasing and you want to know if it's genuinely better than a car loan for your income and car choice.
- You're considering an EV and want to model the zero-FBT benefit against standard finance.
- You've received a novated lease quote and want to stress-test the assumptions before committing.
- You want to compare different lease terms, car prices, or running-cost estimates.
Key features: Pre-tax deduction and post-tax cost outputs; GST saving estimate; FBT liability (or $0 for eligible EVs under $91,387); total annual cost; direct car loan comparison.
Particularly useful for: Novated lease decision-making, EV buyers, PAYG employees whose employers offer salary packaging, anyone who's heard "you'll save thousands in tax" and wants to verify it.
9. Trade-In Equity Calculator
Open Trade-In Equity Calculator →Trading in your current car as part of a new car purchase can simplify the process, but the numbers need checking. This calculator helps you work out your trade-in equity (or negative equity if you owe more than the car is worth), the net amount you'd need to finance on the new vehicle, and estimated new repayments with and without the trade-in.
Use it when:
- You're buying a new or used car and planning to trade in your current vehicle.
- You want to know if you have positive equity to put towards the new car, or if you're "underwater" on your current loan.
- You're comparing the trade-in path against selling privately and using the proceeds directly.
- A dealer is rolling your existing loan balance into a new car loan and you want to check the numbers independently.
Key features: Current car value and loan balance inputs; trade-in equity calculation; negative equity warning; net finance amount; repayment comparison with and without trade-in.
Particularly useful for: Car loan with trade-in decisions, upgrading borrowers, anyone whose dealer has offered to "handle" their existing loan as part of a new car deal.
How to use the calculator suite together
Most car finance decisions involve more than one question. Here's how the calculators work together for common scenarios:
Scenario: Buying a new car from scratch
- Borrowing Power Calculator → know your real number
- Repayment Calculator → stress-test repayments at the rate you'll likely get
- Balloon Payment Calculator → decide whether a balloon makes sense
- Compare lenders on LoanGorilla → find the best rate for your structure
Scenario: Thinking about refinancing
- Refinance Calculator → is the switch worth it after fees and break costs?
- Early Payout Calculator → is clearing the debt entirely a better option?
- Compare refinance options on LoanGorilla → find the best available deal
Scenario: Employer offers novated leasing
- Novated Lease Calculator → model the salary packaging outcome for your income and car
- Car Loan Calculator → model the car loan alternative for the same vehicle
- Compare the outputs → decide which structure wins on total after-tax cost
Scenario: Trading in your current car
- Trade-In Equity Calculator → check equity position before the dealer does
- Car Loan Calculator → model repayments on the net finance amount
- Compare new car loans on LoanGorilla → find the best rate for your situation
Car Loan Calculators FAQ's
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Compare NowReviewed by LoanGorilla editorial team | Last updated: May 2026
All calculator results are estimates for general guidance only and do not constitute a quote, pre-approval, or personal financial advice. Actual loan costs depend on your individual credit profile, lender assessment, applicable fees, and product-specific terms. Comparison rates for marketed products are based on a $30,000 secured loan over 5 years and may not reflect all loan amounts, terms, or structures.