Finance Calculators
Auto Loan Calculator
Estimate your monthly car payment. Enter the loan amount, term in years, and annual interest rate to see your payment and total costs.
How It Works
Monthly Payment = P Γ [r(1+r)^n] Γ· [(1+r)^n β 1], where P = loan amount, r = monthly rate, n = months.
About This Calculator
What It Does
Estimate your monthly car payment including interest and all purchase costs. Enter the vehicle sale price, down payment, trade-in value, cash incentives, sales tax rate, fees, loan term, and interest rate. The calculator shows the monthly payment, total interest, total repayment, and a detailed cost breakdown including sales tax and fees. It also generates a full amortization schedule. Use it to compare different financing options β see how a larger down payment, trade-in, cash rebates, or shorter loan term affect your monthly payment and total vehicle cost.
Worked Example
Example 1 β Standard: A 25,000β¬ car in Portugal with 5,000β¬ down (20%) and 1,000β¬ trade-in. Loan amount = 19,000β¬. At 6% over 5 years: monthly payment β 367β¬. Total interest β 3,040β¬. Example 2 β Shorter term: Same 19,000β¬ loan at 6% over 3 years: monthly β 578β¬. Total interest β 1,810β¬. Saving 1,230β¬. Example 3 β Cash rebates: With 1,500β¬ rebate. Loan = 18,500β¬. At 6%: monthly β 358β¬.
Real-World Usage
Use before visiting a dealership to know what payment fits your budget. Compare financing offers from banks, credit unions, and dealer financing β credit unions often have the best rates. See how a larger down payment reduces your monthly cost and total interest. Use it to decide between buying new vs used (new has lower rates but higher price). Check whether the dealer's 0% financing is better than the cash rebate β the calculator helps compare the total cost.
Local Context
In Portugal, car loans (crΓ©dito auto) have rates from 6-14%. Used car loans are typically 2-3% more expensive than new car loans. Dealers often require insurance and may push additional products. Early repayment penalties are regulated.
Last reviewed: March 2026.
This is an estimate only. Actual rates, terms, and tax rates depend on your location, credit score, lender, and vehicle type. Sales tax and fees are estimates β verify with your dealer and local tax authority.
Frequently Asked Questions
What is the average rate for a car loan in Portugal?
Car loan rates in Portugal range from 6% to 14%. Traditional banks offer more competitive rates than dealership financiers. Used car loans are typically 2-3% more expensive.
Should I make a down payment on a car in Portugal?
A down payment of at least 20% is recommended to avoid higher interest rates. Larger down payments reduce the financed amount and total interest.