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A car payment calculator determines the monthly payment for a vehicle purchase based on price, down payment, trade-in value, interest rate, and loan term. It helps you find a car that fits your budget before walking into a dealership.

Trinn-for-trinn guide

1. 1Net loan = Vehicle price − Down payment − Trade-in value
2. 2Apply monthly payment formula: PMT = P × r(1+r)ⁿ / ((1+r)ⁿ − 1)
3. 3Add sales tax to the purchase price (varies by state: 0–10%)
4. 4Factor in registration, documentation fees, and dealer fees

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