Car Loan Payment Calculator

Car Loan Payment is evaluated from Vehicle Price, Down Payment and Trade-In Value. The calculation reports Loan Amount, Monthly Payment and Total Amount Paid.

Results

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About the Car Loan Payment Calculator

Car Loan Payment is treated here as a quantitative relation between Vehicle Price, Down Payment, Trade-In Value and Annual Interest Rate and Loan Amount, Monthly Payment, Total Amount Paid and Total Interest Paid.

The calculator uses a multi formula configuration. Each reported value is read as a direct evaluation of the stored rules with the declared field formats and units.

Formula basis:
Loan amount = car price - down payment - trade-in value
Monthly payment = P x r(1+r)ⁿ / [(1+r)ⁿ - 1]
- P = loan amount
- r = monthly interest rate (APR / 12 / 100)
- n = number of monthly payments
Total interest = (monthly payment x n) - loan amount

Interpret the outputs in the order shown by the result fields. Optional inputs affect only the outputs that depend on those variables.

Formula & How It Works

The calculation applies the following relations exactly as recorded in the metadata:

Loan amount = car price - down payment - trade-in value
Monthly payment = P x r(1+r)ⁿ / [(1+r)ⁿ - 1]
- P = loan amount
- r = monthly interest rate (APR / 12 / 100)
- n = number of monthly payments
Total interest = (monthly payment x n) - loan amount

Each output field is produced by substituting the supplied inputs into the relevant relation and then applying the declared rounding or text format.

Worked Examples

Example 1: New Toyota RAV4: $35,000, $5,000 down, 6.9% APR, 60 months

Inputs

car_price: 35000 down_payment: 5000 trade_value: 0 interest_rate: 6.9 loan_term: 60 months (5 years)
Loan Amount: $30,000. Monthly Payment: $592.62/mo. Total Amount Paid: $35,557.29. Total Interest Paid: $5,557.29

With Vehicle Price = 35,000, Down Payment = 5,000, Trade-In Value = 0 and Annual Interest Rate = 6.9 as the stated inputs, the result is Loan Amount = $30,000, Monthly Payment = $592.62/mo and Total Amount Paid = $35,557.29. Each value corresponds to the declared output fields.

Example 2: Used Honda CR-V: $22,000, $2,000 down, $3,000 trade-in, 8.9% APR, 48 months

Inputs

car_price: 22000 down_payment: 2000 trade_value: 3000 interest_rate: 8.9 loan_term: 48 months (4 years)
Loan Amount: $17,000. Monthly Payment: $422.24/mo. Total Amount Paid: $20,267.47. Total Interest Paid: $3,267.47

With Vehicle Price = 22,000, Down Payment = 2,000, Trade-In Value = 3,000 and Annual Interest Rate = 8.9 as the stated inputs, the result is Loan Amount = $17,000, Monthly Payment = $422.24/mo and Total Amount Paid = $20,267.47. Each value corresponds to the declared output fields.

Example 3: Luxury BMW 5 Series: $65,000, $10,000 down, 7.5% APR, 72 months

Inputs

car_price: 65000 down_payment: 10000 trade_value: 0 interest_rate: 7.5 loan_term: 72 months (6 years)
Loan Amount: $55,000. Monthly Payment: $950.96/mo. Total Amount Paid: $68,468.84. Total Interest Paid: $13,468.84

With Vehicle Price = 65,000, Down Payment = 10,000, Trade-In Value = 0 and Annual Interest Rate = 7.5 as the stated inputs, the result is Loan Amount = $55,000, Monthly Payment = $950.96/mo and Total Amount Paid = $68,468.84. Each value corresponds to the declared output fields.

Example 4: Economy Toyota Corolla: $24,000, $4,800 (20% down), 5.5% APR, 36 months

Inputs

car_price: 24000 down_payment: 4800 trade_value: 0 interest_rate: 5.5 loan_term: 36 months (3 years)
Loan Amount: $19,200. Monthly Payment: $579.76/mo. Total Amount Paid: $20,871.41. Total Interest Paid: $1,671.41

With Vehicle Price = 24,000, Down Payment = 4,800, Trade-In Value = 0 and Annual Interest Rate = 5.5 as the stated inputs, the result is Loan Amount = $19,200, Monthly Payment = $579.76/mo and Total Amount Paid = $20,871.41. Each value corresponds to the declared output fields.

Common Use Cases

  • Calculate monthly payment for a new or used car loan
  • Compare loan terms (48 vs 60 vs 72 months)
  • Determine how much car you can afford based on desired monthly payment