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- Total Loan Amount: $0.00
- Sales Tax: $0.00
- Upfront Payment: $0.00
- Total Loan Payments: $0.00
- Total Loan Interest: $0.00
- Total Cost (price, interest, tax, fees): $0.00

Principal
Interest

An Auto Loan Calculator is a tool designed to help users estimate the monthly payment, total loan amount, and other associated costs when purchasing a vehicle with financing. It allows users to input various parameters related to the loan and the car purchase, and then calculates the financial details based on those inputs.

**Auto Price**:- The total cost of the vehicle before any deductions like down payments, trade-ins, or incentives.

**Loan Term**:- The length of time (in months) over which the loan will be repaid. Common terms include 36, 48, 60, or 72 months.

**Interest Rate**:- The annual percentage rate (APR) charged by the lender on the loan. This rate is usually influenced by the borrower’s credit score and market conditions.

**Cash Incentives**:- Discounts or rebates offered by the dealership or manufacturer that reduce the overall purchase price of the vehicle.

**Down Payment**:- The upfront cash payment made by the buyer at the time of purchase. This reduces the total amount that needs to be financed.

**Trade-in Value**:- The value of the buyer’s current vehicle that they plan to trade in as part of the purchase. This amount is deducted from the auto price.

**Amount Owed on Trade-in**:- If the buyer owes money on their current vehicle (for instance, on a previous loan), this amount is subtracted from the trade-in value.

**Sales Tax**:- A percentage-based tax imposed by the state or local government on the purchase price of the vehicle.

**Title, Registration, and Other Fees**:- Additional costs associated with the purchase of the vehicle, including state fees for titling and registration, and possibly dealer fees.

**Include All Fees in Loan**:- An option that allows the buyer to include the title, registration, and other fees in the financed amount rather than paying them upfront.

**Monthly Payment**:- The estimated monthly payment the buyer will need to make over the loan term. This is calculated based on the total loan amount, the loan term, and the interest rate.

**Total Loan Amount**:- The amount that will be financed, which includes the auto price minus the down payment and trade-in value, plus any fees that the buyer chooses to include in the loan.

**Sales Tax**:- The total amount of sales tax based on the vehicle price and the local tax rate.

**Upfront Payment**:- The total amount the buyer will pay upfront, including the down payment and any trade-in value adjustments.

**Total Loan Payments**:- The sum of all monthly payments over the life of the loan.

**Total Loan Interest**:- The total amount of interest the buyer will pay over the course of the loan.

**Total Cost**:- The total amount the buyer will pay for the vehicle, including the upfront payment, all monthly payments, sales tax, and any fees.

**Loan Breakdown**:- A graphical representation (usually a pie chart) that shows the proportion of the loan that goes toward paying the principal (the amount borrowed) versus the interest (the cost of borrowing).

When you input values into the calculator fields (such as the auto price, loan term, interest rate, etc.), the calculator performs a series of mathematical calculations to determine the monthly payment and other financial details. The primary calculation for the monthly payment is based on the amortization formula:

$MonthlyÂ Payment=(+r)nâˆ’PÃ—rÃ—(+r)nâ€‹$

Where:

- $P$ is the principal loan amount (total loan amount),
- $r$ is the monthly interest rate (annual rate divided by 12),
- $n$ is the number of payments (loan term in months).

This tool is essential for prospective car buyers because it helps them understand the financial commitment involved in purchasing a vehicle with a loan, and allows them to compare different loan options and scenarios before making a decision.

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