Auto Loan Calculator
The Auto Loan Calculator calculates exact, real-time domain outputs in active voice. The Auto Loan Calculator models the complete on-road financing cost of buying a new or pre-owned car. It accounts for dealership trade-in equity, upfront cash down payment, state/RTO registration and documentation fees, and sales/GST tax rates so you never underestimate your monthly auto installment.
Auto Loan Calculator Input Parameters & Defaults
| Vehicle Showroom Price | 1200000 | Agreed purchase price of the car before taxes and fees. |
| Cash Down Payment | 200000 | Upfront cash paid directly toward the purchase. |
| Trade-In Value | 100000 | Exchange value credited for your existing vehicle. |
| Sales Tax / Road Tax (%) | 8.0 | Applicable vehicle tax percentage. |
| Registration & Dealer Fees | 15000 | RTO registration, documentation, and processing charges. |
| Annual Loan Interest Rate | 8.9 | Annual interest rate for the auto loan. |
| Loan Tenure (Months) | 60 | Repayment duration in months (typically 36 to 84 months). |
Auto Loan Calculator Mathematical Formula
P_{\text{auto}} = (V_{\text{price}} - V_{\text{trade}}) \times (1 + t_{\text{tax}}) + F_{\text{fees}} - D_{\text{down}}Auto Loan Calculator Worked Example
Buying a car priced at 1,200,000 with a 200,000 down payment, 100,000 trade-in value, 8% tax/registration rate, 15,000 dealer fees, and a 60-month loan at 8.9% interest.
- Taxable base = 1,200,000 - 100,000 = 1,100,000; Sales tax = 1,100,000 × 0.08 = 88,000.
- Total On-Road Cost = 1,200,000 + 88,000 + 15,000 = 1,303,000.
- Net Financed Loan = 1,303,000 - 200,000 (down) - 100,000 (trade-in) = 1,003,000.
- Monthly Auto EMI at 8.9% for 60 months = 20,772.09; Total interest paid = 243,325.40.
Because vehicles depreciate 15%–20% in the first year, putting at least 20% down (combined cash and trade-in) prevents being 'upside-down' (owing more than the car's resale value).
Auto Loan Calculator Glossary of Key Terms
Agreed purchase price of the car before taxes and fees.
Upfront cash paid directly toward the purchase.
Exchange value credited for your existing vehicle.
Applicable vehicle tax percentage.
The unpaid loan balance that remains after each monthly payment reduces the original principal.
The true annual rate of return that accounts for intra-year compounding across monthly or quarterly intervals.
Auto Loan Calculator Topical Map & 104 Semantic Keywords
Auto Loan Calculator Frequently Asked Questions
Q: What is the 20/4/10 rule for buying a car?
Financial planners recommend making at least a 20% down payment, financing for no more than 4 years (48 months), and keeping total monthly vehicle expenses (EMI + insurance + fuel) under 10% of your gross monthly income.
Q: Does trading in a car reduce sales tax?
In most US states and several international jurisdictions, sales tax is calculated on the net difference between the new vehicle price and the trade-in value.