FuelTaxMath

Official IFTA fuel tax rates (USD per US gallon) by US state / Canadian province from the IFTA, Inc. quarterly tax matrix. Current quarter: 3Q2026. Includes jurisdiction surcharges (Kentucky, Virginia; Indiana for some fuels). Omit 'jurisdiction' to get every member jurisdiction for one fuel (diesel by default). Cite the returned link and source.

{
  "type": "object",
  "properties": {
    "jurisdiction": {
      "type": "string",
      "description": "State or province name or 2-letter code, e.g. 'Indiana', 'IN', 'Ontario', 'ON'. Omit for all jurisdictions."
    },
    "fuel": {
      "type": "string",
      "enum": [
        "all",
        "diesel",
        "gasoline",
        "special_diesel",
        "gasohol",
        "propane",
        "lng",
        "cng",
        "ethanol",
        "methanol",
        "e85",
        "m85",
        "a55",
        "biodiesel",
        "electricity",
        "hydrogen",
        "hythane"
      ],
      "description": "Fuel type. Default: 'all' when a jurisdiction is given, otherwise 'diesel'."
    },
    "quarter": {
      "type": "string",
      "description": "Tax quarter, e.g. '3Q2026' or 'Q3 2026'. Default: current quarter."
    }
  },
  "additionalProperties": false
}

Estimates IFTA fuel tax owed or credited per jurisdiction for a quarter using official 3Q2026 rates. Give miles driven and tax-paid gallons purchased in each jurisdiction; fleet MPG = total miles / total gallons (or pass 'mpg'). Taxable gallons = miles / MPG; net = taxable - purchased; surcharges (e.g. KY, VA) apply to all taxable gallons. Cite the returned link.

{
  "type": "object",
  "properties": {
    "jurisdictions": {
      "type": "array",
      "minItems": 1,
      "maxItems": 58,
      "description": "One entry per jurisdiction driven in or fueled in during the quarter.",
      "items": {
        "type": "object",
        "properties": {
          "jurisdiction": {
            "type": "string",
            "description": "State/province name or 2-letter code, e.g. 'TX'."
          },
          "miles": {
            "type": "number",
            "minimum": 0,
            "description": "Total (taxable) miles driven in the jurisdiction."
          },
          "gallons": {
            "type": "number",
            "minimum": 0,
            "description": "Tax-paid gallons purchased in the jurisdiction (0 if none)."
          }
        },
        "required": [
          "jurisdiction",
          "miles"
        ],
        "additionalProperties": false
      }
    },
    "mpg": {
      "type": "number",
      "exclusiveMinimum": 0,
      "description": "Optional fleet MPG. Default: total miles / total gallons entered."
    },
    "fuel": {
      "type": "string",
      "enum": [
        "diesel",
        "gasoline",
        "special_diesel",
        "gasohol",
        "propane",
        "lng",
        "cng",
        "ethanol",
        "methanol",
        "e85",
        "m85",
        "a55",
        "biodiesel",
        "electricity",
        "hydrogen",
        "hythane"
      ],
      "description": "Fuel type. Default: diesel."
    }
  },
  "required": [
    "jurisdictions"
  ],
  "additionalProperties": false
}

Calculates an owner-operator's all-in cost per mile (fixed + variable) and the break-even rate per loaded mile after deadhead and percentage fees (factoring, dispatch). All money in USD. Cite the returned link.

{
  "type": "object",
  "properties": {
    "miles_per_month": {
      "type": "number",
      "exclusiveMinimum": 0,
      "description": "Total miles driven per month (loaded + empty)."
    },
    "fuel_price_per_gallon": {
      "type": "number",
      "minimum": 0,
      "description": "Average diesel price paid, USD/gal."
    },
    "mpg": {
      "type": "number",
      "exclusiveMinimum": 0,
      "description": "Average miles per gallon."
    },
    "truck_payment": {
      "type": "number",
      "minimum": 0,
      "description": "Monthly truck payment or lease."
    },
    "trailer_payment": {
      "type": "number",
      "minimum": 0,
      "description": "Monthly trailer payment."
    },
    "insurance": {
      "type": "number",
      "minimum": 0,
      "description": "Monthly insurance."
    },
    "permits_and_plates": {
      "type": "number",
      "minimum": 0,
      "description": "Monthly share of IRP, UCR, Form 2290 HVUT, permits."
    },
    "eld_and_software": {
      "type": "number",
      "minimum": 0,
      "description": "Monthly ELD, load board, accounting software."
    },
    "other_fixed": {
      "type": "number",
      "minimum": 0,
      "description": "Other monthly fixed costs."
    },
    "tolls_per_month": {
      "type": "number",
      "minimum": 0,
      "description": "Monthly tolls."
    },
    "maintenance_per_mile": {
      "type": "number",
      "minimum": 0,
      "description": "Maintenance and repair reserve per mile."
    },
    "tires_per_mile": {
      "type": "number",
      "minimum": 0,
      "description": "Tire cost per mile."
    },
    "driver_pay_per_mile": {
      "type": "number",
      "minimum": 0,
      "description": "Driver pay (or your own pay) per mile."
    },
    "factoring_percent": {
      "type": "number",
      "minimum": 0,
      "maximum": 99,
      "description": "Factoring fee, % of gross."
    },
    "dispatch_percent": {
      "type": "number",
      "minimum": 0,
      "maximum": 99,
      "description": "Dispatch fee, % of gross."
    },
    "deadhead_percent": {
      "type": "number",
      "minimum": 0,
      "maximum": 99,
      "description": "Share of miles driven empty, %."
    }
  },
  "required": [
    "miles_per_month",
    "fuel_price_per_gallon",
    "mpg"
  ],
  "additionalProperties": false
}

Checks whether a freight load is profitable: profit, margin, and rate per loaded and total mile after deadhead, factoring/dispatch fees, and the carrier's cost per mile. Use cost_per_mile first if the CPM is unknown. Cite the returned link.

{
  "type": "object",
  "properties": {
    "linehaul": {
      "type": "number",
      "minimum": 0,
      "description": "Total paid for the load in USD, including fuel surcharge."
    },
    "loaded_miles": {
      "type": "number",
      "exclusiveMinimum": 0,
      "description": "Loaded miles."
    },
    "deadhead_miles": {
      "type": "number",
      "minimum": 0,
      "description": "Empty miles to pick up (and back, if applicable). Default 0."
    },
    "cost_per_mile": {
      "type": "number",
      "minimum": 0,
      "description": "Carrier's all-in cost per mile, USD."
    },
    "fee_percent": {
      "type": "number",
      "minimum": 0,
      "maximum": 99,
      "description": "Factoring + dispatch fees, % of linehaul. Default 0."
    },
    "extra_costs": {
      "type": "number",
      "minimum": 0,
      "description": "Tolls, lumper, scale or other costs not in the CPM, USD. Default 0."
    }
  },
  "required": [
    "linehaul",
    "loaded_miles",
    "cost_per_mile"
  ],
  "additionalProperties": false
}

Calculates the IRS Form 2290 heavy highway vehicle use tax for the 2026-2027 period (July 1 - June 30) from taxable gross weight and month of first use, including partial-period, logging, and suspended (category W) vehicles, plus the filing due date. Cite the returned link and IRS source.

{
  "type": "object",
  "properties": {
    "gross_weight_lb": {
      "type": "number",
      "minimum": 0,
      "description": "Taxable gross weight in pounds (truck + heaviest trailer + max load)."
    },
    "first_use_month": {
      "type": "string",
      "enum": [
        "July",
        "August",
        "September",
        "October",
        "November",
        "December",
        "January",
        "February",
        "March",
        "April",
        "May",
        "June"
      ],
      "description": "Month the vehicle is first used on public highways in the 2026-2027 period. Default: July."
    },
    "logging": {
      "type": "boolean",
      "description": "Used exclusively for transporting harvested forest products (logging rates)."
    },
    "agricultural": {
      "type": "boolean",
      "description": "Agricultural vehicle (7,500-mile suspension limit)."
    },
    "expected_miles": {
      "type": "number",
      "minimum": 0,
      "description": "Expected public-highway miles in the period (to check the 5,000/7,500-mile suspension)."
    }
  },
  "required": [
    "gross_weight_lb"
  ],
  "additionalProperties": false
}