auto loan with down payment brazil
The down payment on an auto loan does more than shrink the monthly installment, it lowers the principal that IOF and PRICE-table interest are calculated on, so the effect compounds over the life of the contract.
The total cost adds installment times 48 months plus the R$ 1,351.08 IOF charged upfront on the financed amount.
Tripling the down payment from R$ 8,000.00 to R$ 24,000.00 cuts the contract total cost by R$ 24,330.48, more than the R$ 16,000.00 extra put down.
IOF falls in the same proportion as the principal because both its rates, the daily one and the 0.38% additional one, apply to the financed amount, not to the vehicle price.
In 2024-2025, rates ranged from around 0.89% to over 2.5% per month for auto loans, depending on the bank, the vehicle year and the customer's credit profile. Used vehicles generally attract higher rates because their value is harder to predict. A larger down payment and a strong credit history can push the rate toward the lower end of that range.
Yes. Credit IOF, under Decreto 6.306/2007, applies to the financed amount, not the vehicle price; in the R$ 80,000.00 example, IOF drops from R$ 1,351.08 to R$ 1,050.84 when the down payment rises from 10% to 30%.
They are different effects: the down payment reduces the principal and, with it, IOF and total interest; a longer term on the same principal reduces the monthly installment, but tends to raise total interest paid, because the outstanding balance accrues interest for longer.
Because every real less in principal stops generating interest across all 48 installments of the contract, not just once; in the example, R$ 16,000.00 more in down payment avoids R$ 8,030.24 in interest accumulated over the 48 installments.
⚠️ Educational simulation. Final rate depends on vehicle year, model, bank and credit profile.
PRICE system. IOF: Decreto 6.306/2007.
Outstanding balance
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