What Car Can I Afford? Affordability Calculator

How Much Car Can You Really Afford?

The most common mistake South African car buyers make is starting with the car and working backwards to the budget. This calculator forces the healthier discipline: start with the instalment your budget can genuinely absorb, then see which price bracket that puts you in. A widely used affordability guideline is to keep your vehicle instalment below 20% of your gross monthly income — and your total cost of ownership, including comprehensive insurance, fuel, tyres and maintenance, below 30%.

Remember that the instalment is only the beginning. Comprehensive insurance is compulsory on financed vehicles and can easily add R800 to R2,500 per month depending on the vehicle, your age, your claims history and where the car sleeps at night. If your budget figure already includes insurance, subtract a realistic premium before using this tool.

How Banks Assess Affordability Under the NCA

Under the National Credit Act, South African credit providers may not grant credit recklessly. Before approving vehicle finance, the bank must assess your gross income, your existing debt commitments (credit cards, personal loans, home loan, store accounts) and your declared living expenses. The figure this calculator produces is a mathematical maximum based on your budget — the bank's own affordability assessment may approve less, particularly if your credit bureau profile shows high utilisation or recent missed payments.

Why a Longer Term or Balloon "Buys" More Car — and Why That's a Trap

Stretching the term from 60 to 84 months, or adding a 35% balloon, can lift the price this calculator shows by a large margin without changing your monthly budget. But both levers work the same way: they slow down how quickly you repay the capital, so you pay more total interest and stay "underwater" — owing more than the car is worth — for longer. A useful stress test: set the balloon to 0% and the term to 60 months, and treat the resulting price as the car you can truly afford. Anything above that is the bank's money working against you, not for you.

Used vs New: The Rate Difference

Banks typically price used vehicles at a slightly higher margin above prime than new vehicles, and very old vehicles (usually 10+ years) may not qualify for standard instalment finance at all. If you are shopping used, consider adding 0.5% to 1.5% to the default rate in this calculator for a more realistic estimate, and remember that a good deposit is the single strongest lever for negotiating a better rate.

Related reading: how to improve your credit score before you apply — the rate you're quoted is the biggest lever on what you can afford.