Arizona EV Tax Credit and Incentive Savings Calculator

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Arizona EV Tax Credit and Incentive Savings Calculator

Estimate your total electric vehicle incentive savings in Arizona, including the federal EV tax credit, Arizona utility rebates, HOV lane access value, and vehicle license tax (VLT) exemptions.

Vehicle Purchase Price ($)

Vehicle Type

Battery Electric Vehicle (BEV) Plug-In Hybrid Electric Vehicle (PHEV)

Battery Capacity (kWh)

Federal Tax Credit Eligibility

Full Credit – $7,500 (new BEV/PHEV meeting all IRA requirements) Partial Credit – $3,750 (meets one battery/mineral requirement) Not Eligible (income/MSRP limit exceeded or vehicle not on list)

Arizona Utility Provider

APS (Arizona Public Service) – up to $250 rebate SRP (Salt River Project) – up to $400 rebate TEP (Tucson Electric Power) – up to $300 rebate Other / None

Annual Miles Driven

Do you commute on HOV-eligible Arizona freeways?

Yes No

Estimated Hours Saved per Year via HOV Access

Your Hourly Wage ($ / hr) – for HOV time value

Current Gas Price ($ / gallon)

Your Previous / Comparable Gas Vehicle MPG

Arizona Electricity Rate ($ / kWh)

EV Efficiency (miles / kWh)

Planned Ownership Period (years)

Calculate My Savings

function ariCalc() { // --- Collect Inputs --- const vehiclePrice = parseFloat(document.getElementById('ari-vehicle-price').value); const vehicleType = document.getElementById('ari-vehicle-type').value; const batteryKwh = parseFloat(document.getElementById('ari-battery-kwh').value); const federalCredit = parseFloat(document.getElementById('ari-federal-credit').value); const utilityProvider = document.getElementById('ari-utility-provider').value; const annualMiles = parseFloat(document.getElementById('ari-annual-miles').value); const hovCommute = document.getElementById('ari-commute-hov').value; const hovHours = parseFloat(document.getElementById('ari-hov-hours-saved').value) || 0; const hourlyWage = parseFloat(document.getElementById('ari-hourly-wage').value) || 0; const gasPrice = parseFloat(document.getElementById('ari-gas-price').value); const mpg = parseFloat(document.getElementById('ari-mpg').value); const elecRate = parseFloat(document.getElementById('ari-electricity-rate').value); const evEfficiency = parseFloat(document.getElementById('ari-ev-efficiency').value); const years = parseFloat(document.getElementById('ari-ownership-years').value);

// --- Validation --- const errors = []; if (isNaN(vehiclePrice) || vehiclePrice 0) { resultDiv.innerHTML = 'Please fix the following:' + errors.map(e => '').join('') + ''; return; }

// ============================================================ // 1. FEDERAL TAX CREDIT (IRA 2023+) // Clean Vehicle Credit: up to $7,500 for new BEV/PHEV // Already selected by user based on eligibility // ============================================================ const federalCreditSavings = federalCredit;

// ============================================================ // 2. ARIZONA UTILITY REBATE // APS: $250 | SRP: $400 | TEP: $300 | Other: $0 // ============================================================ const utilityRebateMap = { aps: 250, srp: 400, tep: 300, other: 0 }; const utilityRebate = utilityRebateMap[utilityProvider];

// ============================================================ // 3. ARIZONA VEHICLE LICENSE TAX (VLT) EXEMPTION // AZ exempts EVs from the alternative fuel vehicle VLT surcharge. // Standard AZ VLT = 60% of MSRP assessed value × $2.89 per $100 // EV owners pay standard VLT but are exempt from the $4/year // alternative fuel surcharge AND save on reduced assessed value. // Approximation: AZ VLT assessed value = 60% of MSRP in year 1, // depreciating 16.25% per year thereafter. // VLT = (assessed value / 100) × $2.89 // EV exemption saves the $4 alt-fuel surcharge per year (minor) // plus AZ does NOT charge sales tax on EV charging equipment // (TPT exemption). The model treats the VLT savings vs. a gas vehicle // of equal price (same formula, no additional surcharge for EV). // Net VLT exemption benefit ≈ $4/year × years (surcharge waiver). // ============================================================ const annualVltExemptionSavings = 4; // AZ alt-fuel surcharge waiver per year const totalVltSavings = annualVltExemptionSavings * years;

// ============================================================ // 4. HOV LANE ACCESS VALUE // Arizona allows EVs with green HOV stickers on HOV lanes // regardless of occupancy (ARS § 28-737). // Value = hours saved per year × hourly wage × years // ============================================================ let hovSavings = 0; if (hovCommute === 'yes') { hovSavings = hovHours * hourlyWage * years; }

// ============================================================ // 5. FUEL COST SAVINGS (Gas vs. Electricity) // Annual gas cost = (annualMiles / mpg) × gasPrice // Annual elec cost = (annualMiles / evEfficiency) × elecRate // Annual fuel savings = gas cost − electricity cost // Total fuel savings = annual fuel savings × years // ============================================================ const annualGasCost = (annualMiles / mpg) * gasPrice; const annualElecCost = (annualMiles / evEfficiency) * elecRate; const annualFuelSavings = annualGasCost - annualElecCost; const totalFuelSavings = annualFuelSavings * years;

// ============================================================ // 6. MAINTENANCE SAVINGS // EVs save ~$0.06/mile vs. gas vehicles (no oil changes, // fewer brake jobs, no transmission service). // Source: U.S. DOE / Consumer Reports estimate. // ============================================================ const maintenanceSavingsPerMile = 0.06; const totalMaintenanceSavings = maintenanceSavingsPerMile * annualMiles * years;

// ============================================================ // 7. TOTAL SAVINGS // ============================================================ const totalSavings = federalCreditSavings + utilityRebate + totalVltSavings + hovSavings + totalFuelSavings + totalMaintenanceSavings;

// ============================================================ // 8. NET COST AFTER INCENTIVES // ============================================================ const netCost = vehiclePrice - federalCreditSavings - utilityRebate;

// --- Format helpers --- const fmt = (n) => n.toLocaleString('en-US', { style: 'currency', currency: 'USD', maximumFractionDigits: 0 }); const fmtD = (n) => n.toLocaleString('en-US', { style: 'currency', currency: 'USD', minimumFractionDigits: 2, maximumFractionDigits: 2 });

// --- Output --- resultDiv.innerHTML = ` ### Your Arizona EV Incentive Savings Summary

Incentive / Savings CategoryAmount

Federal Clean Vehicle Tax Credit (IRA) ${fmt(federalCreditSavings)}

Arizona Utility Rebate (${utilityProvider.toUpperCase()}) ${fmt(utilityRebate)}

AZ Vehicle License Tax Exemption (${years} yr) ${fmt(totalVltSavings)}

HOV Lane Time Value (${years} yr) ${fmt(hovSavings)}

Fuel Cost Savings vs. Gas (${years} yr) ${fmt(totalFuelSavings)}

Maintenance Savings @ $0.06/mile (${years} yr) ${fmt(totalMaintenanceSavings)}

Total Estimated Savings ${fmt(totalSavings)}

Vehicle Purchase Price: ${fmt(vehiclePrice)}

Net Purchase Cost After Upfront Incentives: ${fmt(Math.max(0, netCost))}

Annual Fuel Savings: ${fmtD(annualFuelSavings)} (Gas: ${fmtD(annualGasCost)} → Electric: ${fmtD(annualElecCost)})

Annual Maintenance Savings: ${fmt(maintenanceSavingsPerMile * annualMiles)}

Total Savings Over ${years} Year(s): ${fmt(totalSavings)}

`; }

#### Formulas Used

1. Federal Tax Credit (IRA §30D): Up to $7,500 for new BEVs/PHEVs meeting IRA battery mineral sourcing and MSRP/income limits. User selects applicable tier ($7,500 / $3,750 / $0).

2. Arizona Utility Rebate: APS: $250 | SRP: $400 | TEP: $300 (one-time, upon EV purchase/charger installation).

3. Arizona VLT Exemption: AZ exempts EVs from the $4/year alternative fuel vehicle surcharge (ARS § 28-5801). VLT Savings = $4 × Ownership Years

4. HOV Lane Access Value: Arizona allows single-occupant EVs in HOV lanes (ARS § 28-737). HOV Value = Hours Saved/Year × Hourly Wage × Years

5. Annual Fuel Savings: Gas Cost = (Annual Miles ÷ MPG) × Gas Price/Gallon Electric Cost = (Annual Miles ÷ EV Efficiency) × Electricity Rate/kWh Annual Fuel Savings = Gas Cost − Electric Cost Total Fuel Savings = Annual Fuel Savings × Years

6. Maintenance Savings: Total Maintenance Savings = $0.06/mile × Annual Miles × Years (Based on U.S. DOE and Consumer Reports EV vs. ICE maintenance cost differential)

7. Total Savings: Total = Federal Credit + Utility Rebate + VLT Savings + HOV Value + Fuel Savings + Maintenance Savings

8. Net Purchase Cost: Net Cost = Vehicle Price − Federal Credit − Utility Rebate

#### Assumptions & References

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References

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