Car loan calculator | ThaiCalPro

Total payment	THB 871,200
Total interest	THB 151,200

How the car loan calculator works

Financed amount is car price minus down payment. Enter annual rate and term in months.

Reducing balance charges interest on the remaining balance. Flat spreads total interest evenly—useful to compare with flat-rate promotions.

Results exclude insurance, fees, and balloon payments unless you model them separately.

Car THB 900,000, down THB 180,000 → finance THB 720,000. Try 3.5% over 72 months and toggle reducing vs flat.

Are loan interest rates in ads flat or reducing?: Many advertisements show flat rates or headline rates. In reality, most loans use a reducing balance method. Always confirm with the lender how interest is calculated and whether there are additional fees.
Why is my actual monthly payment higher than the estimate?: Your real installment may be higher due to insurance, processing fees, registration costs, or changes in the approved loan amount and interest rate.
What is the difference between this and a mortgage calculator?: The calculation method is similar, but mortgage loans usually have longer terms and different conditions. For home loans, it’s better to use a dedicated mortgage calculator.
What is the difference between flat rate and reducing balance interest?: Flat rate interest is calculated on the full loan amount for the entire term, while reducing balance interest is calculated on the remaining balance. This means reducing balance loans usually cost less overall.
How can I lower my monthly loan payment?: You can reduce your monthly payment by increasing the loan term, making a larger down payment, or choosing a loan with a lower interest rate. However, longer terms may increase total interest paid.