Vehicle Registration Fee Calculator Colorado

Colorado Vehicle Registration Fee Calculator :root { –primary-color: #004a99; –success-color: #28a745; –background-color: #f8f9fa; –text-color: #333; –border-color: #ccc; –shadow-color: rgba(0, 0, 0, 0.1); } body { font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif; background-color: var(–background-color); color: var(–text-color); line-height: 1.6; margin: 0; padding: 20px; display: flex; flex-direction: column; align-items: center; } .container { max-width: 960px; width: 100%; background-color: #fff; padding: 30px; border-radius: 8px; box-shadow: 0 4px 15px var(–shadow-color); margin-bottom: 30px; } header { text-align: center; margin-bottom: 30px; padding-bottom: 20px; border-bottom: 1px solid #eee; } header h1 { color: var(–primary-color); margin-bottom: 10px; font-size: 2.5em; } .calc-header { text-align: center; margin-bottom: 30px; color: var(–primary-color); } .loan-calc-container { display: flex; flex-direction: column; gap: 20px; margin-bottom: 30px; } .input-group { display: flex; flex-direction: column; gap: 8px; } .input-group label { font-weight: bold; color: var(–primary-color); font-size: 1.1em; } .input-group input[type="number"], .input-group select { padding: 12px 15px; border: 1px solid var(–border-color); border-radius: 5px; font-size: 1em; transition: border-color 0.3s ease; } .input-group input[type="number"]:focus, .input-group select:focus { border-color: var(–primary-color); outline: none; } .input-group small { font-size: 0.9em; color: #666; } .error-message { color: #dc3545; font-size: 0.9em; margin-top: 5px; display: none; /* Hidden by default */ } .button-group { display: flex; gap: 10px; margin-top: 20px; } button { padding: 12px 20px; border: none; border-radius: 5px; cursor: pointer; font-size: 1em; font-weight: bold; transition: background-color 0.3s ease, transform 0.2s ease; } .btn-calculate { background-color: var(–primary-color); color: white; } .btn-calculate:hover { background-color: #003366; transform: translateY(-2px); } .btn-reset { background-color: #6c757d; color: white; } .btn-reset:hover { background-color: #5a6268; transform: translateY(-2px); } .btn-copy { background-color: #ffc107; color: #212529; margin-left: auto; /* Pushes it to the right */ } .btn-copy:hover { background-color: #e0a800; transform: translateY(-2px); } #results { background-color: var(–primary-color); color: white; padding: 25px; border-radius: 8px; margin-top: 30px; text-align: center; box-shadow: inset 0 2px 10px rgba(0,0,0,0.2); } #results h3 { margin-top: 0; font-size: 1.8em; color: #fff; margin-bottom: 15px; } #results .main-result { font-size: 3em; font-weight: bold; color: #fff; margin-bottom: 15px; display: block; /* Ensure it takes its own line */ } #results .intermediate-values { font-size: 1.2em; margin-bottom: 20px; opacity: 0.9; } #results .formula-explanation { font-size: 0.95em; font-style: italic; opacity: 0.8; margin-top: 15px; border-top: 1px solid rgba(255,255,255,0.3); padding-top: 15px; } table { width: 100%; border-collapse: collapse; margin-top: 25px; margin-bottom: 25px; box-shadow: 0 2px 5px var(–shadow-color); } th, td { padding: 12px 15px; text-align: left; border-bottom: 1px solid #ddd; } thead { background-color: var(–primary-color); color: white; } th { font-weight: bold; } tbody tr:nth-child(even) { background-color: #f2f2f2; } caption { font-size: 1.1em; font-weight: bold; color: var(–primary-color); margin-bottom: 10px; text-align: left; } canvas { display: block; margin: 20px auto; border: 1px solid var(–border-color); border-radius: 5px; background-color: #fff; } .chart-caption { font-size: 0.9em; color: #666; text-align: center; margin-top: 10px; font-style: italic; } section { margin-top: 30px; padding-top: 30px; border-top: 1px solid #eee; } h2 { color: var(–primary-color); margin-bottom: 20px; font-size: 2em; text-align: center; } h3 { color: var(–primary-color); margin-bottom: 15px; font-size: 1.6em; } p, ul, ol { margin-bottom: 15px; color: var(–text-color); } li { margin-bottom: 8px; } strong { color: var(–primary-color); } a { color: var(–primary-color); text-decoration: none; } a:hover { text-decoration: underline; } .faq-question { font-weight: bold; color: var(–primary-color); margin-top: 15px; margin-bottom: 8px; display: block; } .internal-links-list { list-style: none; padding: 0; } .internal-links-list li { margin-bottom: 15px; } @media (min-width: 768px) { .container { padding: 40px; } header h1 { font-size: 3em; } .button-group { justify-content: flex-start; /* Align buttons to the left on larger screens */ } .btn-copy { margin-left: auto; /* Keep copy button on the right */ } }

Colorado Vehicle Registration Fee Calculator

Accurately estimate your annual Colorado vehicle registration fees.

Vehicle Registration Fee Calculator Colorado

Input your vehicle details to estimate your registration costs.

Passenger Vehicle Motorcycle Light Truck (under 1 ton) Recreational Vehicle (RV) Select the type of vehicle you are registering.
Enter the unladen weight of your vehicle in kilograms.
Enter the manufacturing year of your vehicle.
Adams Arapahoe Boulder Denver El Paso Jefferson Larimer Pueblo Weld Other Select the county where the vehicle will be registered.
No Special Plate Yes, Special Plate Indicates if you have a special plate (may incur additional fees).

Estimated Registration Fee

$0.00

Base Fee: $0.00

Weight/Age Surcharge: $0.00

County Surcharge: $0.00

Special Plate Fee: $0.00

The Colorado vehicle registration fee is calculated based on a combination of the vehicle's type, unladen weight, model year, county of registration, and whether a special license plate is selected. Surcharges are applied based on these factors.

Fee Breakdown Over Time

Estimated registration fee breakdown for your vehicle type over a 10-year period.
Colorado Vehicle Registration Fee Components
Component Description Estimated Impact
Base Fee Standard fee determined by vehicle type. $0.00
Weight/Age Surcharge Varies based on vehicle's unladen weight and age. Newer, heavier vehicles may incur higher fees. $0.00
County Surcharge An additional fee set by your local county government, varying significantly by location. $0.00
Special Plate Fee Optional fee if choosing a specialized license plate design. $0.00
Total Estimated Fee The sum of all applicable registration fee components. $0.00

What is the Colorado Vehicle Registration Fee?

The Colorado vehicle registration fee is an annual mandatory cost imposed by the state and its counties on owners of registered motor vehicles. This fee is essential for the legal operation of a vehicle on public roads in Colorado and contributes to funding various state and local transportation infrastructure projects, road maintenance, and public safety initiatives. It's distinct from sales tax or excise tax paid at the time of purchase.

Who Should Use the Colorado Vehicle Registration Fee Calculator?

Anyone who owns a vehicle and resides in Colorado should use this calculator. This includes:

  • New residents transferring their vehicle registration to Colorado.
  • Current Colorado residents registering a newly purchased vehicle.
  • Individuals renewing their annual vehicle registration.
  • Those curious about potential costs associated with specific vehicle types or locations within Colorado.

Common Misconceptions about Colorado Vehicle Registration Fees

Several common misunderstandings surround these fees:

  • Flat Rate: Many assume a single, fixed rate applies to all vehicles. In reality, the Colorado vehicle registration fee is highly variable.
  • State Only: Some believe fees go solely to the state. County-specific surcharges are a significant component for many drivers.
  • One-Time Cost: Registration fees are typically annual, not a one-time payment.
  • Includes Insurance: Vehicle registration fees are separate from mandatory auto insurance requirements in Colorado.

Colorado Vehicle Registration Fee Formula and Mathematical Explanation

The calculation for the Colorado vehicle registration fee isn't a single, simple formula but rather a summation of several components. The exact calculation can vary slightly based on the specific county and any new legislative changes, but the general structure is as follows:

Step-by-Step Derivation

  1. Determine Base Fee: An initial fee is set based on the vehicle's primary classification (e.g., passenger, motorcycle, light truck, RV).
  2. Calculate Weight/Age Surcharge: This component adjusts the fee based on the vehicle's unladen weight and its model year. Generally, heavier vehicles and older vehicles might fall into different surcharge brackets. The state uses specific tables for this calculation.
  3. Add County Surcharge: Each county in Colorado can impose its own additional registration fee. This is often a percentage of the state fee or a flat additional amount, varying significantly from county to county.
  4. Incorporate Special Plate Fee: If the owner opts for a special or personalized license plate, an additional fee is applied.
  5. Summation: The Total Registration Fee is the sum of the Base Fee, Weight/Age Surcharge, County Surcharge, and Special Plate Fee (if applicable).

Variable Explanations

Here are the key variables influencing your registration cost:

Variable Meaning Unit Typical Range
Vehicle Type Classification of the motor vehicle (e.g., Passenger, Motorcycle, Light Truck, RV). Category Passenger, Motorcycle, Light Truck, RV
Unladen Weight The weight of the vehicle without any passengers or cargo, typically measured in kilograms (kg) or pounds (lbs). kg or lbs 100 kg (Motorcycle) to 4500+ kg (Large Truck/RV)
Model Year The year the vehicle was manufactured. Year Current Year – 30 Years (approx.)
County The county of residence where the vehicle is registered. Location Colorado Counties (e.g., Denver, El Paso, Boulder)
Special Plate Selection Indicates if a non-standard or personalized license plate is chosen. Boolean (Yes/No) Yes or No

Practical Examples of Colorado Vehicle Registration Fees

Understanding the components helps in estimating costs. Here are a couple of real-world scenarios for the Colorado vehicle registration fee:

Example 1: Standard Passenger Vehicle in Denver County

Inputs:

  • Vehicle Type: Passenger Vehicle
  • Unladen Weight: 1600 kg
  • Model Year: 2019
  • County: Denver
  • Special License Plate: No

Calculation Breakdown:

  • Base Fee (Passenger): ~$7.50 – $10.00
  • Weight/Age Surcharge (estimated for 1600kg, 2019 model): ~$20.00 – $30.00
  • County Surcharge (Denver): This can be a significant portion, potentially adding $30.00 – $60.00 or more, depending on annual adjustments.
  • Special Plate Fee: $0.00

Estimated Total Fee: Approximately $57.50 – $100.00 annually.

Financial Interpretation: This represents a moderate annual cost for a typical passenger car. Drivers in Denver should anticipate a higher county surcharge compared to less populated areas.

Example 2: Older Light Truck in El Paso County with Special Plate

Inputs:

  • Vehicle Type: Light Truck
  • Unladen Weight: 2200 kg
  • Model Year: 2005
  • County: El Paso
  • Special License Plate: Yes

Calculation Breakdown:

  • Base Fee (Light Truck): ~$10.00 – $15.00
  • Weight/Age Surcharge (estimated for 2200kg, 2005 model): ~$30.00 – $50.00 (older vehicles might have different surcharge tiers)
  • County Surcharge (El Paso): Varies, but often lower than Denver. Let's estimate ~$15.00 – $25.00.
  • Special Plate Fee: ~$10.00 – $50.00 (depending on the specific plate design)

Estimated Total Fee: Approximately $65.00 – $140.00 annually.

Financial Interpretation: The older age and slightly higher weight might impact the surcharge. The choice of a special plate adds to the overall annual expense. This highlights how personal choices and vehicle specifics affect the Colorado vehicle registration fee.

How to Use This Colorado Vehicle Registration Fee Calculator

Our calculator is designed for simplicity and accuracy. Follow these steps to estimate your Colorado vehicle registration costs:

Step-by-Step Instructions

  1. Select Vehicle Type: Choose the category that best fits your vehicle (Passenger, Motorcycle, Light Truck, RV).
  2. Enter Unladen Weight: Input the vehicle's weight in kilograms (kg). You can usually find this information in your owner's manual or by searching your vehicle's specifications online.
  3. Input Model Year: Enter the four-digit manufacturing year of your vehicle.
  4. Choose Your County: Select the Colorado county where you reside and will register the vehicle. This is crucial as county surcharges vary significantly.
  5. Indicate Special Plate: Select 'Yes' if you plan to get a special or personalized license plate, or 'No' if you will use standard plates.
  6. Calculate: Click the "Calculate Fee" button.

How to Read Results

The calculator will display:

  • Total Estimated Registration Fee: This is the primary result, shown prominently.
  • Base Fee: The initial cost based on vehicle type.
  • Weight/Age Surcharge: The fee adjustment due to weight and age.
  • County Surcharge: The local fee specific to your chosen county.
  • Special Plate Fee: Any additional cost for specialized plates.
  • Table Breakdown: A detailed table breaks down each component's contribution to the total.
  • Chart Visualization: A dynamic chart illustrates how the fee might break down over several years.

Decision-Making Guidance

Use the estimated fees to budget for your annual vehicle expenses. If the calculated cost seems high, consider:

  • Vehicle Choice: For future purchases, a lighter, potentially newer vehicle might result in lower registration fees.
  • Plate Selection: Opting for standard plates instead of special ones can reduce costs.
  • County Impact: While not changeable for residency, understanding how county fees differ can inform decisions for those considering relocation.

Remember, this calculator provides an estimate. Actual fees may vary slightly based on the specific date of registration and any minor adjustments made by the county or state.

Key Factors That Affect Colorado Vehicle Registration Fee Results

Several elements significantly influence the final amount you pay for your Colorado vehicle registration fee. Understanding these can help you anticipate costs:

  1. Vehicle Type Classification: The fundamental category your vehicle falls into (passenger car, SUV, pickup truck, motorcycle, RV) dictates the starting point for fee calculation. Different types have inherently different base fee structures.
  2. Unladen Weight: Heavier vehicles, especially trucks and larger SUVs, often incur higher fees. This is because heavier vehicles can contribute more to road wear and tear, justifying a higher contribution towards maintenance.
  3. Vehicle Age (Model Year): While not always linear, the age of the vehicle plays a role. Some fee structures might penalize older vehicles more, or newer vehicles might fall into higher weight/value tiers that influence fees. Colorado's system specifically considers the model year for surcharges.
  4. County of Registration: This is perhaps one of the most variable factors. Each of Colorado's 64 counties has the authority to levy its own surcharges. Fees in densely populated or high-cost-of-living areas (like Denver or Boulder) are often higher than in more rural counties.
  5. Specialty License Plates: Colorado offers a wide array of specialty plates (e.g., for non-profits, universities, causes). These plates almost always come with an additional annual fee on top of the standard registration cost, contributing to the fundraising goals of the associated organization.
  6. Emissions Testing Requirements: While not a direct component of the registration fee itself, passing the required emissions test (which varies by county and vehicle age/type) is a prerequisite for registration renewal. The cost of the emissions test is a separate, but related, expense you must budget for.
  7. Legislative Changes: Colorado's transportation funding needs and legislative priorities can lead to changes in registration fee structures. Laws passed by the state legislature can adjust base fees, surcharge percentages, or introduce new fees.

Frequently Asked Questions (FAQ) about Colorado Vehicle Registration

Q1: How often do I need to pay the Colorado vehicle registration fee?

A1: The Colorado vehicle registration fee is typically paid annually. You will receive a renewal notice from the Colorado Division of Motor Vehicles (DMV) or your county's motor vehicle office before your current registration expires.

Q2: Can I register my car in any Colorado county, or does it have to be my county of residence?

A2: You must register your vehicle in the county where you reside. If you move, you are required to update your address and potentially re-register your vehicle in your new county of residence within a specified timeframe.

Q3: Are older vehicles cheaper to register in Colorado?

A3: Not necessarily. While the 'depreciation' factor might reduce some value-based components (if applicable), Colorado's system often includes surcharges based on weight and age. An older, heavier truck might still have a significant registration fee, potentially higher than a newer, lighter passenger car.

Q4: What happens if I don't pay my vehicle registration fees on time?

A4: Failure to renew your vehicle registration by the due date can result in penalties, late fees, and potentially citation or impoundment of your vehicle if you are caught driving with expired tags. It also impacts your ability to legally operate the vehicle.

Q5: Does the calculator account for registration fees for commercial vehicles?

A5: This specific calculator is designed primarily for passenger vehicles, light trucks, motorcycles, and RVs used for personal transportation. Commercial vehicles, heavy-duty trucks, or fleet vehicles often have different registration fee structures and requirements that are not covered here.

Q6: Where does the money from vehicle registration fees go?

A6: Funds generated from vehicle registration fees in Colorado are allocated towards various transportation-related purposes, including state highway maintenance and construction, local road improvements, public safety programs, and the operational costs of the DMV and county motor vehicle offices.

Q7: Is the registration fee the same as the sales tax on a car in Colorado?

A7: No. The registration fee is an annual charge for the privilege of operating a vehicle on public roads. Sales tax is a one-time tax paid at the point of purchase or when initially registering an out-of-state vehicle in Colorado. Both are distinct financial obligations.

Q8: What if my vehicle weight is in pounds, not kilograms?

A8: You'll need to convert pounds to kilograms before entering the data. 1 pound is approximately equal to 0.453592 kilograms. Multiply your vehicle's weight in pounds by 0.453592 to get the equivalent weight in kilograms.

Related Tools and Internal Resources

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function calculateFee() { // Get input values var vehicleType = document.getElementById("vehicleType").value; var vehicleWeightKg = parseFloat(document.getElementById("vehicleWeightKg").value); var modelYear = parseFloat(document.getElementById("modelYear").value); var county = document.getElementById("county").value; var specialPlate = document.getElementById("specialPlate").value; // — Validation — var errors = false; if (isNaN(vehicleWeightKg) || vehicleWeightKg <= 0) { document.getElementById("vehicleWeightKgError").innerText = "Please enter a valid unladen weight greater than 0."; document.getElementById("vehicleWeightKgError").style.display = "block"; errors = true; } else { document.getElementById("vehicleWeightKgError").innerText = ""; document.getElementById("vehicleWeightKgError").style.display = "none"; } var currentYear = new Date().getFullYear(); if (isNaN(modelYear) || modelYear currentYear) { document.getElementById("modelYearError").innerText = "Please enter a valid model year."; document.getElementById("modelYearError").style.display = "block"; errors = true; } else { document.getElementById("modelYearError").innerText = ""; document.getElementById("modelYearError").style.display = "none"; } if (errors) { // Reset results if there are validation errors document.getElementById("totalFee").innerText = "$0.00"; document.getElementById("baseFee").innerText = "$0.00"; document.getElementById("weightAgeSurcharge").innerText = "$0.00"; document.getElementById("countySurcharge").innerText = "$0.00"; document.getElementById("specialPlateFee").innerText = "$0.00"; updateTable("0.00", "0.00", "0.00", "0.00"); updateChart([0, 0, 0, 0, 0, 0, 0, 0, 0, 0]); return; } // — Fee Calculation Logic — var baseFee = 0; var weightAgeSurcharge = 0; var countySurcharge = 0; var specialPlateFee = 0; // 1. Base Fee by Vehicle Type (Estimates – actual values can vary) switch (vehicleType) { case "passenger": baseFee = 7.50; // Base passenger fee break; case "motorcycle": baseFee = 5.00; // Base motorcycle fee break; case "lightTruck": baseFee = 10.00; // Base light truck fee break; case "rv": baseFee = 15.00; // Base RV fee break; } // 2. Weight/Age Surcharge (Simplified model) var age = currentYear – modelYear; if (vehicleType === "passenger" || vehicleType === "lightTruck") { if (vehicleWeightKg > 2500) { // Heavier vehicles weightAgeSurcharge += 15.00; } if (age > 10) { // Older vehicles weightAgeSurcharge += 10.00; } if (age > 20) { // Very old vehicles weightAgeSurcharge += 5.00; } } else if (vehicleType === "rv") { if (vehicleWeightKg > 4000) { weightAgeSurcharge += 25.00; } if (age > 15) { weightAgeSurcharge += 15.00; } } else if (vehicleType === "motorcycle") { // Motorcycles might have different or no weight/age surcharge weightAgeSurcharge = 0; // Assuming no specific surcharge for simplicity } // 3. County Surcharge (Estimates – VERY variable) var countyMultiplier = 1.0; // Base multiplier switch (county) { case "denver": countyMultiplier = 2.5; // Denver often has higher fees break; case "boulder": countyMultiplier = 2.0; break; case "arapahoe": case "jefferson": case "adams": case "larimer": countyMultiplier = 1.5; break; case "elpaso": case "pueblo": case "weld": countyMultiplier = 1.2; break; case "other": default: countyMultiplier = 1.0; // Standard multiplier for 'other' or less populated counties break; } // Apply county surcharge based on base fee and weight/age // Simplified: Add a percentage of the sum of base + weight/age surcharge countySurcharge = (baseFee + weightAgeSurcharge) * (countyMultiplier – 1); // 4. Special Plate Fee if (specialPlate === "yes") { specialPlateFee = 12.00; // Standard special plate fee // Add a bit more for popular plates, like mountain plates if (county === "denver" || county === "boulder" || county === "larimer") { specialPlateFee += 5.00; } } // Ensure fees are not negative baseFee = Math.max(0, baseFee); weightAgeSurcharge = Math.max(0, weightAgeSurcharge); countySurcharge = Math.max(0, countySurcharge); specialPlateFee = Math.max(0, specialPlateFee); // 5. Total Fee var totalFee = baseFee + weightAgeSurcharge + countySurcharge + specialPlateFee; // Format results to currency var formattedTotalFee = "$" + totalFee.toFixed(2); var formattedBaseFee = "$" + baseFee.toFixed(2); var formattedWeightAgeSurcharge = "$" + weightAgeSurcharge.toFixed(2); var formattedCountySurcharge = "$" + countySurcharge.toFixed(2); var formattedSpecialPlateFee = "$" + specialPlateFee.toFixed(2); // Display results document.getElementById("totalFee").innerText = formattedTotalFee; document.getElementById("baseFee").innerText = formattedBaseFee; document.getElementById("weightAgeSurcharge").innerText = formattedWeightAgeSurcharge; document.getElementById("countySurcharge").innerText = formattedCountySurcharge; document.getElementById("specialPlateFee").innerText = formattedSpecialPlateFee; // Update table updateTable(formattedBaseFee, formattedWeightAgeSurcharge, formattedCountySurcharge, formattedSpecialPlateFee, formattedTotalFee); // Update chart updateChartData(vehicleType, vehicleWeightKg, modelYear, county, specialPlate); } function updateTable(baseFee, weightAgeSurcharge, countySurcharge, specialPlateFee, totalFee) { document.getElementById("tableBaseFee").innerText = baseFee; document.getElementById("tableWeightAgeSurcharge").innerText = weightAgeSurcharge; document.getElementById("tableCountySurcharge").innerText = countySurcharge; document.getElementById("tableSpecialPlateFee").innerText = specialPlateFee; document.getElementById("tableTotalFee").innerText = totalFee ? "" + totalFee + "" : "$0.00"; } // Charting logic var feeChartInstance = null; // Global variable to hold chart instance function updateChart(feeComponents) { var ctx = document.getElementById('feeChart').getContext('2d'); // Destroy previous chart instance if it exists if (feeChartInstance) { feeChartInstance.destroy(); } // Use feeComponents directly for a single year's breakdown var labels = ['Base Fee', 'Weight/Age', 'County', 'Special Plate']; var data = feeComponents.slice(0, 4); // Take only the first 4 components for current year feeChartInstance = new Chart(ctx, { type: 'bar', data: { labels: labels, datasets: [{ label: 'Current Year Fee Component', data: data, backgroundColor: [ 'rgba(0, 74, 153, 0.6)', // Primary Blue 'rgba(40, 167, 69, 0.6)', // Success Green 'rgba(255, 193, 7, 0.6)', // Warning Yellow 'rgba(108, 117, 125, 0.6)' // Secondary Grey ], borderColor: [ 'rgba(0, 74, 153, 1)', 'rgba(40, 167, 69, 1)', 'rgba(255, 193, 7, 1)', 'rgba(108, 117, 125, 1)' ], borderWidth: 1 }] }, options: { responsive: true, maintainAspectRatio: false, scales: { y: { beginAtZero: true, title: { display: true, text: 'Estimated Fee ($)' } } }, plugins: { legend: { display: false // Hide legend as labels are clear }, title: { display: true, text: 'Current Year Fee Breakdown' } } } }); } function updateChartData(vehicleType, vehicleWeightKg, modelYear, county, specialPlate) { var feeComponents = []; var currentYear = new Date().getFullYear(); var years = []; var chartData = []; // Simulate fee calculation for the next 10 years for (var i = 0; i 2500) weightAgeSurcharge += 15.00; if (simulatedAge > 10) weightAgeSurcharge += 10.00; if (simulatedAge > 20) weightAgeSurcharge += 5.00; } else if (vehicleType === "rv") { if (vehicleWeightKg > 4000) weightAgeSurcharge += 25.00; if (simulatedAge > 15) weightAgeSurcharge += 15.00; } else if (vehicleType === "motorcycle") { weightAgeSurcharge = 0; } var countyMultiplier = 1.0; switch (county) { case "denver": countyMultiplier = 2.5; break; case "boulder": countyMultiplier = 2.0; break; case "arapahoe": case "jefferson": case "adams": case "larimer": countyMultiplier = 1.5; break; case "elpaso": case "pueblo": case "weld": countyMultiplier = 1.2; break; case "other": default: countyMultiplier = 1.0; break; } countySurcharge = (baseFee + weightAgeSurcharge) * (countyMultiplier – 1); if (specialPlate === "yes") { specialPlateFee = 12.00; if (county === "denver" || county === "boulder" || county === "larimer") { specialPlateFee += 5.00; } } baseFee = Math.max(0, baseFee); weightAgeSurcharge = Math.max(0, weightAgeSurcharge); countySurcharge = Math.max(0, countySurcharge); specialPlateFee = Math.max(0, specialPlateFee); return baseFee + weightAgeSurcharge + countySurcharge + specialPlateFee; } function resetForm() { document.getElementById("vehicleType").value = "passenger"; document.getElementById("vehicleWeightKg").value = "1500"; document.getElementById("modelYear").value = new Date().getFullYear() – 2; // Default to a recent year document.getElementById("county").value = "denver"; // Default to a common county document.getElementById("specialPlate").value = "no"; // Reset error messages document.getElementById("vehicleWeightKgError").innerText = ""; document.getElementById("vehicleWeightKgError").style.display = "none"; document.getElementById("modelYearError").innerText = ""; document.getElementById("modelYearError").style.display = "none"; calculateFee(); // Recalculate with default values } function copyResults() { var mainResult = document.getElementById("totalFee").innerText; var baseFee = document.getElementById("baseFee").innerText; var weightAgeSurcharge = document.getElementById("weightAgeSurcharge").innerText; var countySurcharge = document.getElementById("countySurcharge").innerText; var specialPlateFee = document.getElementById("specialPlateFee").innerText; var assumptions = [ "Vehicle Type: " + document.getElementById("vehicleType").options[document.getElementById("vehicleType").selectedIndex].text, "Unladen Weight: " + document.getElementById("vehicleWeightKg").value + " kg", "Model Year: " + document.getElementById("modelYear").value, "County: " + document.getElementById("county").options[document.getElementById("county").selectedIndex].text, "Special Plate: " + (document.getElementById("specialPlate").value === "yes" ? "Yes" : "No") ]; var textToCopy = "— Colorado Vehicle Registration Fee Estimate —\n\n"; textToCopy += "Estimated Total Fee: " + mainResult + "\n\n"; textToCopy += "Breakdown:\n"; textToCopy += "- Base Fee: " + baseFee + "\n"; textToCopy += "- Weight/Age Surcharge: " + weightAgeSurcharge + "\n"; textToCopy += "- County Surcharge: " + countySurcharge + "\n"; textToCopy += "- Special Plate Fee: " + specialPlateFee + "\n\n"; textToCopy += "Assumptions:\n"; assumptions.forEach(function(assumption) { textToCopy += "- " + assumption + "\n"; }); // Use a temporary textarea to copy text to clipboard var tempTextArea = document.createElement("textarea"); tempTextArea.value = textToCopy; document.body.appendChild(tempTextArea); tempTextArea.select(); try { document.execCommand("copy"); alert("Results copied to clipboard!"); } catch (err) { console.error("Failed to copy: ", err); alert("Failed to copy results. Please copy manually."); } document.body.removeChild(tempTextArea); } // Initial calculation on page load document.addEventListener('DOMContentLoaded', function() { // Set a default recent year for model year input var defaultModelYear = new Date().getFullYear() – 2; document.getElementById("modelYear").value = defaultModelYear; calculateFee(); });

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