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Vehicle Finance Calculator South Africa

Q: What interest rate should I use in the calculator?

Use the current South African prime lending rate as your starting point. Vehicle finance is typically priced at prime plus 0 to 3 percentage points depending on your credit profile. The calculator defaults to a typical linked rate. Your actual rate will only be confirmed once Carfin submits your application to the banks. For a conservative estimate, try the calculation at a rate 2 to 3% above prime.

Q: What is a balloon payment and how does it affect my repayment?

A balloon (or residual) payment is a lump sum deferred to the end of your finance term. Setting a balloon of, say, 20% means that 20% of the vehicle price is not included in your monthly repayment calculation, so your monthly payments are lower as a result. At the end of the term you settle the balloon in cash, refinance it, or trade in the vehicle. A balloon lowers monthly payments but increases the total cost of credit over the term. Use the calculator to compare total repayment with and without a balloon.

Q: Should I choose a fixed or linked interest rate?

A fixed rate stays the same for the full term, so your repayment is predictable regardless of prime rate movements. A linked rate moves with the South African prime lending rate. Fixed rates are typically set slightly higher than the current linked rate because the bank absorbs the rate-movement risk. In a declining rate environment, a linked rate tends to benefit borrowers. Carfin can show you the monthly difference for your specific deal before you choose.

Q: How accurate is this calculator?

The calculator uses the standard amortisation formula used by South African banks, with principal multiplied by the monthly rate and compounding factor, divided by the compounding factor minus one. The result is an accurate estimate of your instalment given the inputs. Your actual bank offer may differ slightly depending on the lender's specific fee structure (initiation fees, monthly service fees) and the exact rate offered to your profile. The Carfin calculator does not include initiation or monthly service fees in the output.

Q: What deposit do I need for vehicle finance?

There is no mandatory minimum deposit for vehicle finance in South Africa, and some buyers finance 100% of the purchase price. However, a deposit of 10% or more reduces the loan-to-value ratio, which improves your approval odds and often results in a better interest rate. For used vehicles or applicants with a lower credit score, banks frequently require a deposit to reduce their risk.

Q: Can I use this calculator for a refinance?

Yes. To estimate a refinance repayment, enter the settlement amount of your current loan as the vehicle price, set the deposit to 0, and adjust the term and rate to what you expect from a refinance offer. This gives you an estimate of what your new monthly repayment would be. For a more accurate refinance quote, apply through Carfin, as the actual offer depends on your current vehicle's value, your credit profile, and the settlement figure.

Estimate your monthly vehicle finance repayment instantly. Enter your vehicle price, deposit, term, balloon percentage, and interest rate, and the calculator updates in real time.

Use the Calculator Apply for Finance

Vehicle Price (R) Total asking price of the vehicle

Deposit (R) Amount you will pay upfront (0 = no deposit)

Loan Term (months) Typically 24, 36, 48, 60, or 72 months

Interest Rate (% per year) Your actual rate is confirmed by the bank after application

Balloon Payment (%) Percentage deferred to end of term (0 = no balloon)

R 0 Monthly repayment

R 0 Total repayment

R 0 Total interest

Estimate only. Actual repayment depends on your approved rate, lender fees (initiation and monthly service fee), and final loan amount. Carfin does not include lender fees in this calculation.

Using the Calculator

How to Use This Calculator

Enter the vehicle price
Type the asking price of the vehicle you want to finance. This is the total purchase price before any deposit.
Enter your deposit
How much will you put down upfront? Enter 0 if you are not using a deposit. A deposit reduces the loan amount and often improves your interest rate.
Set the balloon percentage (optional)
A balloon defers a percentage of the purchase price to the end of the term, lowering your monthly payments. Enter 0 for a standard instalment sale with no balloon.
Choose your loan term
Enter the number of months. 24, 36, 48, 60, or 72 are most common. A longer term means lower monthly payments but more total interest paid.
Set the interest rate
Enter the annual interest rate as a percentage. Use the current prime rate as a guide, and your actual approved rate will be confirmed once Carfin submits to the banks.
Review your result
The calculator instantly shows your monthly repayment, total repayment, and total interest. Adjust any input and the result updates immediately.

Understanding Your Result

What the Numbers Actually Mean

Linked vs Fixed Rate

A linked rate moves with the South African prime lending rate, so your repayment changes if prime changes. A fixed rate is locked for the full term. Fixed rates are set slightly higher because the bank absorbs the rate-movement risk. Try both to see the monthly difference for your deal.

What the Balloon Does

A balloon lowers your monthly payment by deferring part of the purchase price. But that deferred amount still earns interest, so the total cost of credit is higher than a no-balloon deal at the same rate. The output line "Total repayment" includes the balloon. Compare total repayment with and without a balloon to see the true cost difference.

Total Cost of Credit

The "Total interest" figure shows how much you pay in interest over the full term, on top of the loan amount. This does not include initiation fees (typically R1,200) or monthly service fees (typically R65 to R75 a month) charged by the bank. Add approximately R3,000 to R5,000 to the total for a more realistic all-in cost estimate.

Read our plain-language guides to balloon payments, interest rates, and finance types →

Common Questions

Frequently Asked Questions

What interest rate should I use in the calculator?

What is a balloon payment and how does it affect my repayment?

Should I choose a fixed or linked interest rate?

How accurate is this calculator?

What deposit do I need for vehicle finance?

Can I use this calculator for a refinance?