Illinois EV Tax Credit & Rebate Savings Calculator

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Illinois EV Tax Credit & Rebate Savings Calculator

Estimate your total savings from the Illinois Electric Vehicle Rebate Program, the federal Clean Vehicle Tax Credit (IRC §30D), and ongoing fuel and maintenance cost reductions.

Vehicle Purchase Price ($)

Vehicle Type

New Passenger Car / SUV New Pickup Truck / Van Used EV (≥2 model years old)

Battery Capacity (kWh)

Used to calculate Illinois rebate ($4,000 base + $100/kWh above 40 kWh, capped at $4,000 total for used; $4,000 for new)

Annual Household Income ($)

Illinois income-based bonus rebate: +$2,000 if income ≤ 400% Federal Poverty Level (≈$60,240 for single filer, 2024)

Household Size (persons)

Estimated Federal Income Tax Liability ($)

Federal credit is non-refundable (new EV) or partially refundable (used EV). Enter your expected tax liability.

Annual Miles Driven

Current Gas Price ($/gallon)

Your Current Vehicle Fuel Economy (MPG)

Electricity Rate ($/kWh)

Illinois average ≈ $0.13/kWh (ComEd/Ameren, 2024)

EV Efficiency (miles/kWh)

Typical range: 3.0–4.5 miles/kWh

Ownership Period (years)

Calculate Savings

function illCalc() { // --- Inputs --- var price = parseFloat(document.getElementById('ill-vehicle-price').value); var vtype = document.getElementById('ill-vehicle-type').value; var batteryKwh = parseFloat(document.getElementById('ill-battery-kwh').value); var income = parseFloat(document.getElementById('ill-income').value); var hhSize = parseInt(document.getElementById('ill-household-size').value); var fedTax = parseFloat(document.getElementById('ill-federal-tax').value); var annualMiles = parseFloat(document.getElementById('ill-annual-miles').value); var gasPrice = parseFloat(document.getElementById('ill-gas-price').value); var mpg = parseFloat(document.getElementById('ill-mpg').value); var elecRate = parseFloat(document.getElementById('ill-electricity-rate').value); var evEff = parseFloat(document.getElementById('ill-ev-efficiency').value); var years = parseFloat(document.getElementById('ill-ownership-years').value);

// --- Validation --- var errors = []; if (isNaN(price) || price 55000) errors.push("New passenger car/SUV exceeds federal MSRP cap of $55,000 — federal credit not available."); if (vtype === 'new_truck' && price > 80000) errors.push("New truck/van exceeds federal MSRP cap of $80,000 — federal credit not available."); if (vtype === 'used' && price > 25000) errors.push("Used EV exceeds federal MSRP cap of $25,000 — federal used-EV credit not available.");

var resultDiv = document.getElementById('ill-result'); if (errors.length > 0) { resultDiv.style.display = 'block'; resultDiv.innerHTML = 'Please fix the following:' + errors.map(function(e){ return ''; }).join('') + ''; return; }

// ===================================================================== // 1. ILLINOIS REBATE (Illinois Electric Vehicle Rebate Program, PA 102-0662) // ===================================================================== // New EV: flat $4,000 rebate // Used EV: $4,000 base (battery ≥ 40 kWh) or $1,500 (battery = 40) ? 4000 : 1500; }

var illIncomeBonus = (income '; html += 'CategoryAmount';

html += 'Illinois Rebate (PA 102-0662)'; html += 'Base Rebate (' + (vtype === 'used' ? 'Used EV' : 'New EV') + ')' + fmt(illRebate) + ''; html += 'Income-Based Bonus (≤400% FPL: ' + fmt(fpl400) + ')' + fmt(illIncomeBonus) + ''; html += 'Illinois Total Rebate' + fmt(illTotalRebate) + '';

html += 'Federal Tax Credit (IRC §' + (vtype === 'used' ? '25E' : '30D') + ')'; html += 'Maximum Available Credit' + fmt(federalCreditMax) + ''; html += 'Usable Credit (limited by tax liability: ' + fmt(fedTax) + ')' + fmt(federalCredit) + '';

html += 'Fuel Savings Over ' + years + ' Year(s)'; html += 'Annual Gas Cost (current vehicle)' + fmt(annualGasCost) + ''; html += 'Annual Electricity Cost (EV)−' + fmt(annualElecCost) + ''; html += 'Annual Fuel Savings' + fmt(annualFuelSavings) + ''; html += 'Total Fuel Savings' + fmt(totalFuelSavings) + '';

html += 'Maintenance Savings Over ' + years + ' Year(s)'; html += 'Savings Rate$0.061/mile'; html += 'Annual Maintenance Savings' + fmt(annualMaintSavings) + ''; html += 'Total Maintenance Savings' + fmt(totalMaintSavings) + '';

html += 'TOTAL ESTIMATED SAVINGS' + fmt(grandTotal) + ''; html += 'Effective Net Vehicle Cost' + fmt(effectiveNetCost) + ''; html += '';

if (annualFuelSavings

#### Formulas Used

Illinois Rebate (PA 102-0662): New EV Rebate = $4,000 Used EV Rebate = $4,000 (battery ≥ 40 kWh) or $1,500 (battery < 40 kWh) Income Bonus = $2,000 if Household Income ≤ 400% × Federal Poverty Level 400% FPL = ($15,060 + $5,380 × (household_size − 1)) × 4

Federal Tax Credit: New EV (§30D): Credit = min($7,500, federal_tax_liability) — subject to MSRP caps ($55,000 cars; $80,000 trucks) Used EV (§25E): Credit = min(purchase_price × 30%, $4,000, federal_tax_liability) — subject to $25,000 MSRP cap

Annual Fuel Savings: Gas Cost = (annual_miles ÷ mpg) × gas_price_per_gallon Electricity Cost = (annual_miles ÷ ev_efficiency_miles_per_kwh) × electricity_rate_per_kwh Annual Fuel Savings = Gas Cost − Electricity Cost

Annual Maintenance Savings: Annual Maintenance Savings = annual_miles × $0.061/mile (ICE avg ≈ $0.101/mile; EV avg ≈ $0.040/mile; delta = $0.061/mile — Consumer Reports 2023)

Grand Total Savings: Total = Illinois Rebate + Federal Credit + (Annual Fuel Savings × years) + (Annual Maintenance Savings × years) Effective Net Cost = Purchase Price − Total Savings

#### Assumptions & References

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References

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