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Auto Loan Calculator with Trade 84 Months

Reviewed by Calculator Editorial Team

This auto loan calculator helps you estimate your monthly payments when you trade in your current vehicle. By entering your loan amount, trade-in value, interest rate, and loan term (up to 84 months), you'll get a clear picture of your monthly payments, total interest paid, and total cost of the loan.

How to Use This Calculator

Using this auto loan calculator with trade is simple:

  1. Enter the purchase price of the new vehicle in the "Loan Amount" field.
  2. Enter the estimated value of your trade-in vehicle in the "Trade-In Value" field.
  3. Input your loan term in months (up to 84 months).
  4. Enter your annual interest rate (APR).
  5. Click "Calculate" to see your estimated monthly payment, total interest, and total cost.

The calculator will show you a breakdown of your loan, including the adjusted loan amount after applying your trade-in value, your monthly payment, total interest paid over the loan term, and the total cost of the loan.

Formula Used

The auto loan calculator uses the standard loan payment formula:

M = P [ i(1 + i)^n ] / [ (1 + i)^n - 1 ] Where: M = Monthly payment P = Principal loan amount (Purchase price - Trade-in value) i = Monthly interest rate (Annual rate / 12 / 100) n = Number of payments (Loan term in months)

Where the principal loan amount is calculated as:

P = Loan Amount - Trade-In Value

Total interest paid is calculated as:

Total Interest = (Monthly Payment × Number of Payments) - Principal Loan Amount

Total cost of the loan is simply the sum of the principal loan amount and the total interest paid.

Worked Example

Let's say you want to buy a new car for $30,000, and you can trade in your current car for $5,000. You secure a loan with an 84-month term and a 5% annual interest rate. Here's how the calculation works:

  1. Principal loan amount = $30,000 - $5,000 = $25,000
  2. Monthly interest rate = 5% / 12 = 0.4167%
  3. Number of payments = 84
  4. Monthly payment = $25,000 [ 0.004167(1 + 0.004167)^84 ] / [ (1 + 0.004167)^84 - 1 ] ≈ $330.50
  5. Total interest paid = ($330.50 × 84) - $25,000 ≈ $1,430.80
  6. Total cost of loan = $25,000 + $1,430.80 ≈ $26,430.80

Using our calculator, you would enter $30,000 as the loan amount, $5,000 as the trade-in value, 84 as the loan term, and 5 as the interest rate to get these results.

Frequently Asked Questions

What is the maximum loan term for this calculator?

The calculator supports loan terms up to 84 months (7 years).

How does the trade-in value affect my monthly payment?

The trade-in value reduces the principal loan amount, which in turn lowers your monthly payment. The more you can trade in, the less you'll pay each month.

Is the interest rate before or after taxes?

The interest rate shown is the Annual Percentage Rate (APR), which includes all fees and is the rate you'll pay on your loan.

Can I use this calculator for refinancing?

Yes, you can use this calculator to estimate your new monthly payment if you're refinancing your auto loan.