Quick answer
Enter price, down payment, flat rate, and years.
Formula
Interest = financed amount × annual rate × years; monthly = total ÷ months.
Worked example
800,000 price, 160,000 down, 2.5%, 5 years
Financed amount is 640,000 baht before interest.
Choose this tool when
Use this page for a flat-rate vehicle quote. It does not convert that rate into an effective rate or reproduce a lender contract.
Assumptions and limitations
- Flat rate is not an effective reducing-balance rate.
- Check fees and insurance.
Official sources
Last reviewed: 7 September 2026
Review again when the responsible authority changes the rule, rate, or effective period, or when this calculator's assumptions change.
Check the current Thai text and effective dates before relying on a result for tax, billing, employment, or legal purposes.