Car Purchase Calculator

Car Purchase Price & Out-the-Door Calculator

Purchase Summary

Estimated Sales Tax:
Total Out-the-Door Price:
Credits (Trade + Rebates):
Net Amount Due:

How to Calculate Your Total Car Purchase Price

When buying a new or used vehicle, the sticker price is rarely the final amount you pay. Understanding the "Out-the-Door" (OTD) price is crucial for budgeting. This calculator helps you breakdown the various costs associated with a car purchase, excluding financing terms, to show you exactly how much capital is required to complete the transaction.

Key Components of Car Purchase Costs

  • Sticker Price (MSRP): The base price of the vehicle before any taxes or additional fees are applied.
  • Sales Tax: Most states levy a sales tax on vehicle purchases. This is usually calculated on the purchase price, often after deducting the trade-in value depending on local laws.
  • Documentation (Doc) Fees: This is a fee charged by the dealer for processing the paperwork. These can vary significantly by state and dealership.
  • Registration and Title: These are government fees paid to the DMV for your license plates, title registration, and vehicle tags.
  • Incentives and Rebates: Manufacturer discounts that reduce the total price of the vehicle directly.

Example Calculation

Imagine you are purchasing a sedan with a sticker price of $30,000. Your local sales tax is 6%, dealer fees are $400, and registration is $200. You also have a trade-in vehicle worth $4,000.

  1. Subtotal: $30,000
  2. Tax: $1,800 (6% of $30,000)
  3. Fees: $600 ($400 + $200)
  4. OTD Price: $32,400
  5. Net Due: $28,400 ($32,400 minus $4,000 trade-in)

By using this car purchase calculator, you can enter your specific numbers to avoid surprises at the dealership and ensure you stay within your actual budget.

function calculatePurchaseTotal() { var sticker = parseFloat(document.getElementById('stickerPrice').value); var taxRate = parseFloat(document.getElementById('taxRate').value); var docFees = parseFloat(document.getElementById('dealerFees').value); var regFees = parseFloat(document.getElementById('regFees').value); var tradeValue = parseFloat(document.getElementById('tradeIn').value); var rebateValue = parseFloat(document.getElementById('rebates').value); // Default to 0 for optional or empty fields if (isNaN(sticker)) sticker = 0; if (isNaN(taxRate)) taxRate = 0; if (isNaN(docFees)) docFees = 0; if (isNaN(regFees)) regFees = 0; if (isNaN(tradeValue)) tradeValue = 0; if (isNaN(rebateValue)) rebateValue = 0; if (sticker <= 0) { alert("Please enter a valid vehicle price."); return; } // Calculate Sales Tax (calculated on sticker price in most simple models) var taxAmount = sticker * (taxRate / 100); // Total Out-the-Door Price var otdPrice = sticker + taxAmount + docFees + regFees; // Total Credits var totalCredits = tradeValue + rebateValue; // Final Amount Due var netDue = otdPrice – totalCredits; // Formatting var formatter = new Intl.NumberFormat('en-US', { style: 'currency', currency: 'USD', }); document.getElementById('resTax').innerText = formatter.format(taxAmount); document.getElementById('resOTD').innerText = formatter.format(otdPrice); document.getElementById('resCredits').innerText = "- " + formatter.format(totalCredits); document.getElementById('resFinal').innerText = formatter.format(netDue); document.getElementById('resultArea').style.display = 'block'; }

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