Calculate your estimated International Fuel Tax Agreement (IFTA) tax liability based on fuel consumed in different jurisdictions.
Alabama
Arkansas
Colorado
Connecticut
Delaware
Georgia
Idaho
Illinois
Indiana
Iowa
Kansas
Kentucky
Louisiana
Maine
Maryland
Massachusetts
Michigan
Minnesota
Mississippi
Missouri
Montana
Nebraska
Nevada
New Hampshire
New Jersey
New Mexico
New York
North Carolina
North Dakota
Ohio
Oklahoma
Oregon
Pennsylvania
Rhode Island
South Carolina
South Dakota
Tennessee
Texas
Utah
Vermont
Virginia
Washington
West Virginia
Wisconsin
Wyoming
Alberta
British Columbia
Manitoba
New Brunswick
Newfoundland and Labrador
Nova Scotia
Ontario
Prince Edward Island
Quebec
Saskatchewan
Estimated IFTA Tax Due
$0.00
Understanding IFTA and Your Tax Calculation
The International Fuel Tax Agreement (IFTA) is an agreement among 48 U.S. states and 10 Canadian provinces. It's designed to simplify the fuel tax reporting for carriers who operate in multiple jurisdictions. Instead of filing individual tax returns with each jurisdiction, IFTA carriers file one single fuel tax report with their base jurisdiction. This report then allocates fuel taxes to the other jurisdictions where the carrier operated.
This calculator provides an estimation of your IFTA tax liability. It's crucial to understand that actual tax liabilities are based on detailed trip records, mileage, and fuel purchases in each specific jurisdiction, which can vary.
How This Calculator Works:
The core of IFTA taxation is determining the fuel consumed within each jurisdiction. This calculator uses the following logic to estimate your tax due:
Fuel Tax Rate: You provide the tax rate per gallon for the selected state or province. This is the base rate that will be applied to the fuel consumed within that jurisdiction.
Total Fuel Purchased: The total gallons of fuel you've purchased for your fleet during the reporting period.
Total Fuel Used: The total gallons of fuel your fleet has consumed during the reporting period.
Fuel Consumed in Jurisdiction: The calculator estimates the fuel consumed in the selected jurisdiction. A common method (and the one this calculator uses as a simplified approach) is to assume fuel consumption is proportional to the total fuel used across all jurisdictions.
Estimated Fuel Used in Jurisdiction = (Total Fuel Used / Total Fuel Purchased) * Total Fuel Purchased (If available for the jurisdiction, otherwise uses average fuel efficiency)
*Note: For accuracy, IFTA requires tracking fuel consumed per jurisdiction. This calculator simplifies this by using the overall fuel usage.
Fuel Tax Calculation: The estimated tax for a jurisdiction is calculated as:
Tax Due = Estimated Fuel Used in Jurisdiction * Tax Rate per Gallon for that Jurisdiction
Total Tax Due: This calculator sums up the estimated tax for the selected jurisdiction based on the provided rates and your fuel usage. The total fuel purchased and cost per gallon are included for context but not directly in the tax calculation for a single jurisdiction, as IFTA focuses on fuel *consumed* within a jurisdiction versus fuel *purchased*. The credit for fuel purchased in a jurisdiction is applied when reporting for that specific jurisdiction.
Disclaimer: This is an ESTIMATION tool. For accurate IFTA filing, always refer to the official IFTA guidelines for your base jurisdiction and maintain meticulous records of your mileage and fuel purchases in each taxing jurisdiction. Consult with a tax professional if you have complex tax situations.
function calculateIFTA() {
var totalFuelPurchased = parseFloat(document.getElementById('totalFuelPurchased').value);
var totalFuelUsed = parseFloat(document.getElementById('totalFuelUsed').value);
var fuelCostPerGallon = parseFloat(document.getElementById('fuelCostPerGallon').value);
var stateTaxRates = parseFloat(document.getElementById('stateTaxRates').value);
var provinceTaxRates = parseFloat(document.getElementById('provinceTaxRates').value);
var jurisdiction = document.getElementById('jurisdiction').value;
var calculationResult = document.getElementById('calculationResult');
// Clear previous results and errors
calculationResult.innerText = "$0.00";
// Input validation
if (isNaN(totalFuelPurchased) || totalFuelPurchased <= 0) {
alert("Please enter a valid number for Total Fuel Purchased (must be greater than 0).");
return;
}
if (isNaN(totalFuelUsed) || totalFuelUsed < 0) {
alert("Please enter a valid number for Total Fuel Used (cannot be negative).");
return;
}
if (isNaN(fuelCostPerGallon) || fuelCostPerGallon < 0) {
alert("Please enter a valid number for Average Fuel Cost Per Gallon (cannot be negative).");
return;
}
var selectedJurisdictionTaxRate = 0;
var isState = false;
// Simplified mapping of rates. In a real scenario, you'd have a more robust way to look up rates per jurisdiction.
// This example assumes the user will input the rate relevant to the selected jurisdiction,
// but uses the 'stateTaxRates' and 'provinceTaxRates' fields for simplicity.
// A better approach would be a lookup table or separate fields per jurisdiction.
if (jurisdiction.length = 0) { // Assuming 2-letter codes are states and we use stateTaxRates
selectedJurisdictionTaxRate = stateTaxRates;
isState = true;
} else if (jurisdiction.length > 2 && !isNaN(provinceTaxRates) && provinceTaxRates >= 0) { // Assuming longer names are provinces and we use provinceTaxRates
selectedJurisdictionTaxRate = provinceTaxRates;
isState = false;
} else {
alert("Please ensure you have entered valid tax rates for the selected jurisdiction type (State or Province).");
return;
}
// Estimate fuel consumed in the selected jurisdiction
// This is a simplified model. Actual IFTA requires mileage tracking.
// We'll assume fuel consumption is proportional to the total fuel used.
// A more accurate method involves calculating MPG and then mileage per jurisdiction.
var estimatedFuelUsedInJurisdiction = 0;
// If total fuel purchased is 0 or less, we can't estimate consumption accurately.
// However, if total fuel used is provided, we can still attempt to calculate.
// A common proxy for "fuel consumed in jurisdiction" is the fuel purchased there.
// But for this calculation, we'll use total fuel used as the basis for consumption.
if (totalFuelPurchased > 0) {
// Simplified proportionality: If 950 gallons are used out of 1000 purchased, assume 95% of the fleet's consumption occurs in the "tracked" miles.
// This is an oversimplification. A true IFTA calculation relies on mileage per jurisdiction.
// A better proxy for fuel consumed in jurisdiction:
// If we assume an average MPG (e.g., 5 MPG for trucks), then total mileage = totalFuelUsed * MPG.
// Then, mileage in jurisdiction / total mileage = fuel used in jurisdiction / total fuel used.
// Since we don't have MPG or mileage, we'll use a simplified approach:
// Assume that the ratio of fuel used to fuel purchased represents the operational intensity,
// and apply this ratio to the tax rate. This is NOT strictly accurate for IFTA, which is mileage-based.
// The most basic interpretation for this calculator:
// How much tax would be due IF all the fuel used was taxed at this jurisdiction's rate?
// This calculator is therefore estimating the tax liability *if* all the fuel reported as 'used' was consumed in this jurisdiction.
// A more correct IFTA calculation would involve actual miles driven in jurisdiction.
// For *this simplified calculator*, we will use 'Total Fuel Used' directly as the basis for tax calculation IF it's less than or equal to total fuel purchased.
// If total fuel used exceeds total fuel purchased, it implies fuel was bought in jurisdictions not fully accounted for in 'totalFuelPurchased'.
// The safest assumption for this calculator is: fuel consumed in the jurisdiction cannot exceed total fuel purchased.
// And the tax is applied to fuel USED in the jurisdiction.
// For a simplified IFTA estimation, we'll calculate tax on 'totalFuelUsed' if valid,
// assuming 'totalFuelUsed' reflects fuel consumed in the jurisdiction.
// The fuel purchased in the jurisdiction is meant to offset this.
// Since this calculator doesn't have 'fuel purchased in jurisdiction' as an input,
// it will just show the GROSS tax liability for the fuel used.
estimatedFuelUsedInJurisdiction = totalFuelUsed;
} else {
// If total fuel purchased is not provided or is zero, we use total fuel used directly as the basis for calculation.
estimatedFuelUsedInJurisdiction = totalFuelUsed;
}
if (estimatedFuelUsedInJurisdiction < 0) estimatedFuelUsedInJurisdiction = 0; // Ensure non-negative
var estimatedTaxDue = estimatedFuelUsedInJurisdiction * selectedJurisdictionTaxRate;
// Format the result
calculationResult.innerText = "$" + estimatedTaxDue.toFixed(2);
}
function resetForm() {
document.getElementById('totalFuelPurchased').value = '';
document.getElementById('totalFuelUsed').value = '';
document.getElementById('fuelCostPerGallon').value = '';
document.getElementById('stateTaxRates').value = '';
document.getElementById('provinceTaxRates').value = '';
document.getElementById('jurisdiction').selectedIndex = 0; // Reset to the first option
document.getElementById('calculationResult').innerText = "$0.00";
}