Vehicle Financing 2026: How to Calculate Installments and Choose the Best Option
Buying a financed car is one of the most common — and most expensive — financial decisions in a Brazilian's life. With interest rates rising in recent years, the total cost of financing can easily exceed twice the original value of the vehicle if the term is long and the rate is high.
Understanding how installments are calculated, what the CET (Total Effective Cost) is and how to compare proposals from different banks and dealerships can save tens of thousands of reais over the course of the contract.
Use our Vehicle Finance Calculator to simulate any scenario and find the cheapest way to buy your car.
How Does Vehicle Financing Work in Brazil?
Vehicle financing in Brazil generally works through the CDC (Direct Consumer Credit) model, whereby a bank or finance company lends the money for you to buy the vehicle, with it being sold (guaranteed) to the creditor until the installments are paid in full.
Main features:
- The vehicle is sold to the bank throughout the financing
- You are the owner since purchase, but you cannot sell without paying off or transferring the debt
- Installments are fixed (Price system) or decreasing (SAC system)
- Interest rate negotiated individually, varying by bank, customer profile and term
Price System: How Installments Are Calculated
The vast majority of vehicle financing uses the Price System (also called Price Table or French amortization system), where the installments are fixed and equal from start to finish.
The Price System Installment Formula
PMT = PV × [i × (1 + i)^n] ÷ [(1 + i)^n − 1]
Where:
- PMT = Monthly installment amount
- PV = Amount financed (Principal)
- i = Monthly interest rate (in decimal)
- n = Number of installments (months)
Practical Example: Car worth $50,000.00 Financed in 48 Months
Data:
- Vehicle value: $ 60.000,00
- Entrada (30%): $ 18,000.00
- Amount financed (PV): $ 42,000.00
- Interest rate: 1.5% per month (18% per year)
- Term: 48 months
Calculation:
- PMT = 42,000 × [0.015 × (1.015)^48] ÷ [(1.015)^48 − 1]
- (1.015)^48 ≈ 2.0435
- PMT = 42,000 × [0.015 × 2.0435] ÷ [2.0435 − 1]
- PMT = 42,000 × 0.030652 ÷ 1.0435
- PMT = 42,000 × 0.029377 = $ 1,233.85 per month
Total paid: $ 1.233,85 × 48 = $ 59,224.80 Total interest: $ 59.224,80 − $ 42,000.00 = $ 17,224.80 (41% of the amount financed!)
Average Interest Rates for Vehicle Financing in 2026
Rates vary greatly depending on the bank, the customer's profile (credit score), the term and whether it is a new or used vehicle. The market averages in 2026 are:
| Vehicle Type | Average Monthly Rate | Equivalent Annual Rate |
|---|---|---|
| New car — seats (CEF, BB, Itaú, Brad.) | 1.2% to 1.8% a.m. | 15.4% to 23.9% p.a. |
| New car — dealership (BMW, Toyota...) | 0.69% to 1.2% a.m. | 8.6% to 15.4% p.a. |
| Used car up to 5 years old | 1.5% to 2.2% p.m. | 19.6% to 29.6% p.a. |
| Used car over 5 years old | 2.0% to 3.5% p.m. | 26.8% to 51.1% p.a. |
| New motorcycle | 1.3% to 2.0% a.m. | 16.8% to 26.8% p.a. |
Source: Central Bank of Brazil — credit note (average of concession rates for July/2026).
What is the CET and why is it more important than the interest rate
The interest rate is just one part of the cost of financing. The CET (Total Effective Cost) is the correct indicator for comparing proposals — it includes:
- Nominal interest rate
- Mandatory insurance (MIP — Death or Permanent Disability)
- Registration and evaluation fees
- Contract registration fees
- IOF (Tax on Financial Operations)
- Other administrative fees
The CET may be up to 3-5 percentage points higher than the advertised interest rate.
Example:
- Bank X announces: "Rate from 1.49% per month"
- Real CET: 2.1% per month
- Banco Y announces: "Rate from 1.69% per month"
- Real CET: 1.85% per month
Even with a higher nominal rate, Bank Y may be cheaper in CET.
By law (BCB Resolution No. 3,517/2007), the bank is obliged to inform the CET before signing any financing contract.
Bank vs. Dealership: Who Charges Less?
This is one of the most frequently asked questions when financing a car. The answer depends on several factors:
Traditional Banks (Caixa, BB, Itaú, Bradesco, Santander)
Advantages:
- Negotiation possible if you have a good relationship with the bank
- Credit portability (can transfer to bank with lower rate)
- Mandatory transparency about CET
Disadvantages:
- More bureaucratic process (more rigorous credit analysis)
- Rate may be higher than finance companies specializing in vehicles
Dealership Financial Companies (BV, Banco Toyota, Banco GM, etc.)
Advantages:
- Promotional rates on launches (manufacturers subsidize interest)
- Faster approval
- Same day approval deadline
Disadvantages:
- Regular rate (outside of promotion) may be higher
- Mandatory built-in insurance can increase the CET
- Lower negotiation margin after purchase
Recommended strategy: Obtain proposals from at least 3 different banks + the dealership's finance company. Compare CETs, not just nominal rates.
Entry: How Much to Put in to Pay Less Interest?
The down payment reduces the amount financed and, consequently, the total interest paid. See the impact of different inputs:
Vehicle: $ 60,000.00 | Rate: 1.5% p.m. | Term: 60 months
| Entrance | % of value | Amount Financed | Installment | Total Paid | Total Interest |
|---|---|---|---|---|---|
| $ 0,00 | 0% | $ 60,000.00 | $ 1.523,89 | $ 91,433.40 | $ 31.433,40 |
| $ 12,000.00 | 20% | $ 48.000,00 | $ 1,219.11 | $ 73.146,60 | $ 25,146.60 |
| $ 18.000,00 | 30% | $ 42,000.00 | $ 1.066,72 | $ 64,003.20 | $ 22.003,20 |
| $ 24,000.00 | 40% | $ 36.000,00 | $ 914.33 | $ 54.859,80 | $ 18,859.80 |
| $ 30.000,00 | 50% | $ 30,000.00 | $ 761,94 | $ 45,716.40 | $ 15,716.40 |
Conclusion: Each $ 6.000,00 a mais de entrada economiza em torno de $ 6,000.00 to $7,000.00 in interest over 60 months.
Term: Smaller Installment or Lower Interest?
Increasing the term reduces the installment, but increases the total interest paid. See the tradeoff:
Vehicle: $45,000.00 financed | Rate: 1.5% p.m.
| Deadline | Installment | Total Paid | Total Interest |
|---|---|---|---|
| 24 months | $ 2.268,51 | $ 54,444.24 | $ 9.444,24 |
| 36 meses | $ 1,659.88 | $ 59.755,68 | $ 14,755.68 |
| 48 months | $ 1.361,78 | $ 65,365.44 | $ 20.365,44 |
| 60 meses | $ 1,218.23 | $ 73.093,80 | $ 28,093.80 |
| 72 months | $ 1.132,46 | $ 81,537.12 | $ 36,537.12 |
Conclusion: Financing in 72 months instead of 36 months increases interest by $21,781.44 — almost half the amount financed! Prefer shorter deadlines whenever the installment fits within the budget.
Early Amortization: Is It Worth It?
Paying off part or all of the financing in advance is always advantageous. Under Law No. 9,514/1997 and the Consumer Protection Code, the consumer is entitled to a proportional reduction in interest upon early payment.
How early repayment works:
- The bank must apply the discount rate corresponding to future interest not yet due
- For partial repayments in the Price system, the discount can be applied by reducing the term (more advantageous) or the value of the installments
Tip: Whenever you receive a bonus, 13th salary or inheritance, consider using part of it to repay the financing. Each real amortized saves the interest that would be charged on it for the remaining time.
Common Mistakes in Vehicle Financing
Compare only the interest rate, not the CET: The advertised rate does not include insurance, IOF and fees. Always require the CET in annual percentage before signing.
Financing 100% with no down payment: The higher the amount financed, the more interest you pay. Postpone the purchase if necessary to save a down payment of at least 20-30%.
Choose the maximum term to pay a smaller installment: Smaller installments seem comfortable, but the total cost of 72 months can be almost double that of 36 months with the same rate.
Not checking your credit score before negotiating: Customers with a high score get lower rates. Resolve pending issues and clear your name before going to the dealership.
Ignore vehicle insurance in planning: The bank may require vehicle insurance as a condition of financing. Include this cost in your monthly planning.
Frequently Asked Questions (FAQ)
1. What is the maximum interest rate allowed for vehicle financing in Brazil? There is no fixed legal ceiling for vehicle financing rates. Rates are regulated by the market, and the Central Bank publishes the averages monthly. However, the Consumer Protection Code prohibits abusive fees, and the consumer can appeal to Procon or the Court in extreme cases.
2. Is it possible to transfer vehicle financing to another bank (portability)? Yes. According to BCB Resolution No. 4,292/2013, the consumer has the right to credit portability, being able to transfer the outstanding balance of the financing to another bank that offers a lower rate. The original bank has 5 business days to release the contract data for portability.
3. What happens if I delay the financing installment? Delay generates a fine of 2% on the installment + late payment interest of 1% per month + additional CET as per contract. After 90 days of default, the bank can initiate the search and seizure of the vehicle in court, as it has been sold as collateral.
4. Can I sell the financed car? Yes, with restrictions. The sold vehicle cannot be sold without paying off the financing or transferring the debt to the buyer (with the bank's consent). One option is for the buyer to use the purchase money to pay off the financing and then receive the released vehicle.
5. Does used car financing have a higher rate? Yes. Used cars over 5 years old have significantly higher rates (up to 3.5% per month) than new cars (which may have rates subsidized by car manufacturers starting at 0.69% per month). This makes financing a very cheap used car, in total, as expensive as buying a newer one.
6. Is it worth taking out a personal loan to buy a car outright? It depends on the rates. In general, personal loans have higher rates than vehicle financing (which has the car itself as collateral). Compare the CET of a personal loan with the CET of direct financing. In most cases, direct CDC is cheaper.
7. What is the "0% rate" offered by dealerships? 0% rate is a subsidy from automakers to stimulate sales — they absorb part of the interest to make financing attractive. However, check that the cash discount is significantly lower than with the 0% rate: if the car costs $ 80.000 à vista mas $ 90,000 in installments at "0% interest", the real rate is not zero.
8. How does the credit score affect the financing interest rate? Customers with a score above 700 points usually get rates close to the lowest on the market. Scores below 400 can result in negative credit or rates very close to the ceiling. Improving your score before financing can save hundreds of reais per month on installments.
Simulate Your Financing Now
Before signing any contract, simulate the impact of different rates, deadlines and inputs on the total amount you will pay.
Access our Vehicle Financing Calculator — instant results with complete month-by-month amortization table.
Related calculators:
- Amortization Calculator (Price vs SAC) — compare amortization systems
- Real Estate Financing Calculator — for purchasing property
- Credit Score Calculator — improve your score before financing
- Compound Interest Calculator — understand the cost of interest in the long term