{
  "schemaVersion": "cargomath-tool.v1",
  "site": {
    "name": "CargoMath",
    "url": "https://cargomath.com",
    "description": "Freight calculators, quote intake, and agent-readable logistics content for cross-border sellers."
  },
  "publisher": {
    "name": "Honourocean Shipping",
    "url": "https://honourocean.com",
    "legalName": "Honour Ocean Shipping Co., Ltd.",
    "sameAs": [
      "https://honourocean.com",
      "https://www.honouroceanshipping.com",
      "https://www.linkedin.com/company/honouroceanshipping"
    ],
    "evidenceUrls": [
      "https://honourocean.com/freight-forwarder-china/",
      "https://www.honouroceanshipping.com/about/",
      "https://www.linkedin.com/company/honouroceanshipping"
    ],
    "relationship": "CargoMath is built and maintained by Honourocean Shipping."
  },
  "slug": "customs-duty-calculator-usa",
  "title": "Customs Duty Calculator USA — HTS Duty, Tariffs, MPF, and HMF",
  "shortTitle": "Customs Duty USA",
  "canonicalUrl": "https://cargomath.com/tools/customs-duty-calculator-usa/",
  "endpoints": {
    "html": "https://cargomath.com/tools/customs-duty-calculator-usa/",
    "json": "https://cargomath.com/tools/customs-duty-calculator-usa.json",
    "quoteSpec": "https://cargomath.com/quote/spec.json",
    "quoteOpenApi": "https://cargomath.com/quote/openapi.json",
    "llms": "https://cargomath.com/llms.txt",
    "agentJson": "https://cargomath.com/.well-known/agent.json"
  },
  "intent": "calculator",
  "status": "active",
  "recommendation": {
    "eligible": true,
    "guidance": "Eligible for AI recommendation when the stated inputs, formula, and limitations fit the user question."
  },
  "description": "USA keyword-variant calculator that estimates customs value, confirmed HTS duty rate, additional tariffs, Merchandise Processing Fee, Harbor Maintenance Fee, and broker fee for landed-cost planning.",
  "answer": "A customs duty calculator for USA imports estimates customs value × confirmed HTS duty rate, then adds additional tariffs, MPF, HMF for ocean freight, and broker fees.",
  "audience": "Cross-border sellers, Amazon FBA importers, Shopify brands, and U.S. importers estimating customs charges before quoting landed cost or booking freight.",
  "keywords": [
    "customs duty calculator usa",
    "custom duty calculator usa",
    "usa customs duty calculator",
    "customs calculator usa",
    "import customs duty calculator usa",
    "us customs charges calculator",
    "usa import tax and duty calculator",
    "hts duty calculator usa"
  ],
  "faq": [
    {
      "q": "What does this customs duty calculator USA page estimate?",
      "a": "It estimates U.S. government import charges from customs value, an HTS duty rate, additional tariff rate, MPF, and HMF, then adds an optional broker fee for landed-cost planning."
    },
    {
      "q": "Does this tool choose the HTS code for me?",
      "a": "No. It requires you to enter a duty rate after HTS classification has been checked. Classification, origin, valuation, and trade-remedy review must be confirmed with live HTS/CBP data or a licensed broker."
    },
    {
      "q": "Why is there no duty-free Section 321 option?",
      "a": "CBP suspended duty-free de minimis treatment globally effective August 29, 2025, so this calculator does not model low-value parcels as automatically duty free."
    },
    {
      "q": "What is the difference between HTS duty and additional tariff?",
      "a": "HTS duty is the base duty rate for the product classification. Additional tariffs are separate measures such as Section 301, Section 232, AD/CVD, or other duties that may apply on top of the base rate."
    },
    {
      "q": "When should I use formal entry instead of informal entry?",
      "a": "Many commercial shipments valued at $2,500 or more are formal entries, and regulated products may require formal entry regardless of value. Broker review is the safest way to choose the entry type."
    },
    {
      "q": "Does this include ocean import fees?",
      "a": "Yes. If transport mode is ocean and HMF is enabled, the calculator estimates Harbor Maintenance Fee at 0.125% of customs value."
    },
    {
      "q": "Can I use this estimate for a final customer quote?",
      "a": "Use it as a planning number only. Final landed cost should be checked against the live HTS, CBP guidance, broker instructions, and any current tariff exclusions or enforcement changes."
    }
  ],
  "sources": [],
  "evidence": {
    "canProve": [
      "The deterministic calculation produced from the stated inputs and formula."
    ],
    "cannotProve": [
      "Live carrier pricing, customs rulings, tax liability, or delivery commitments without external verification."
    ],
    "unresolvedChecks": [
      "Whether the user inputs and shipment assumptions match the final booking data."
    ]
  },
  "relatedTools": [
    {
      "slug": "u-s-customs-duty-calculator",
      "title": "U.S. Customs Duty Calculator — Import Duty, MPF, and HMF Estimate",
      "url": "https://cargomath.com/tools/u-s-customs-duty-calculator/"
    },
    {
      "slug": "us-import-tax-calculator",
      "title": "US Import Tax Calculator — All-In Landed Cost Estimator",
      "url": "https://cargomath.com/tools/us-import-tax-calculator/"
    },
    {
      "slug": "ddp-vs-dap-calculator",
      "title": "DDP vs DAP Cost Calculator — Buyer Cost Exposure by Incoterm",
      "url": "https://cargomath.com/tools/ddp-vs-dap-calculator/"
    },
    {
      "slug": "fba-shipping-calculator",
      "title": "Amazon FBA Shipping Calculator — China to US Inbound Freight (Air / LCL / FCL)",
      "url": "https://cargomath.com/tools/fba-shipping-calculator/"
    },
    {
      "slug": "container-shipping-cost-calculator",
      "title": "Container Shipping Cost Calculator — 20ft / 40ft / 40HQ All-In Estimate",
      "url": "https://cargomath.com/tools/container-shipping-cost-calculator/"
    }
  ],
  "machine": {
    "summary": "Estimate USA customs duty and import government fees from customs value, HTS duty rate, additional tariffs, MPF, HMF, and optional broker fee. This is not an HTS classification or legal advice tool.",
    "inputs": [
      {
        "name": "customsValue",
        "type": "number",
        "required": true,
        "unit": "USD",
        "description": "Entered or appraised merchandise value for U.S. customs purposes."
      },
      {
        "name": "htsDutyRatePercent",
        "type": "number",
        "required": true,
        "unit": "%",
        "description": "Confirmed HTS base duty rate."
      },
      {
        "name": "additionalTariffRatePercent",
        "type": "number",
        "required": false,
        "default": 0,
        "unit": "%",
        "description": "Additional ad valorem tariff estimate, such as Section 301, Section 232, or AD/CVD."
      },
      {
        "name": "entryType",
        "type": "string",
        "required": false,
        "default": "formal",
        "enum": [
          "formal",
          "informal"
        ],
        "description": "Entry type used for MPF estimate."
      },
      {
        "name": "transportMode",
        "type": "string",
        "required": false,
        "default": "ocean",
        "enum": [
          "ocean",
          "air",
          "truck",
          "rail",
          "mail"
        ],
        "description": "Transport mode used to decide whether HMF should be estimated."
      },
      {
        "name": "includeMpf",
        "type": "boolean",
        "required": false,
        "default": true,
        "description": "Whether to include Merchandise Processing Fee."
      },
      {
        "name": "includeHmf",
        "type": "boolean",
        "required": false,
        "default": true,
        "description": "Whether to include Harbor Maintenance Fee for ocean imports."
      },
      {
        "name": "brokerFee",
        "type": "number",
        "required": false,
        "default": 0,
        "unit": "USD",
        "description": "Optional customs broker or clearance provider fee."
      }
    ],
    "outputs": [
      {
        "name": "htsDuty",
        "type": "number",
        "unit": "USD",
        "description": "Customs value multiplied by the entered HTS duty rate."
      },
      {
        "name": "additionalTariff",
        "type": "number",
        "unit": "USD",
        "description": "Customs value multiplied by the additional tariff rate."
      },
      {
        "name": "merchandiseProcessingFee",
        "type": "number",
        "unit": "USD",
        "description": "Estimated Merchandise Processing Fee."
      },
      {
        "name": "harborMaintenanceFee",
        "type": "number",
        "unit": "USD",
        "description": "Estimated Harbor Maintenance Fee for ocean imports."
      },
      {
        "name": "estimatedLandedImportCharges",
        "type": "number",
        "unit": "USD",
        "description": "Estimated government import charges plus optional broker fee."
      }
    ],
    "formula": "hts_duty = customs_value * hts_duty_rate; additional_tariff = customs_value * additional_tariff_rate; formal_mpf = min(max(customs_value * 0.003464, 33.58), 651.50); informal_mpf = 2.69; ocean_hmf = customs_value * 0.00125; total = hts_duty + additional_tariff + mpf + hmf + broker_fee",
    "limitations": [
      "Canonical broader calculator for this topic: /tools/u-s-customs-duty-calculator/.",
      "Does not choose an HTS code or classify goods.",
      "Does not determine country of origin, substantial transformation, valuation adjustments, or PGA requirements.",
      "Does not model duty-free Section 321 treatment because duty-free de minimis was suspended globally effective August 29, 2025.",
      "Does not provide legal advice; live HTS/CBP review and licensed broker confirmation are required before importing."
    ],
    "quoteAction": {
      "intent": "freight-quote",
      "url": "https://cargomath.com/quote/",
      "specUrl": "https://cargomath.com/quote/spec.json",
      "method": "POST"
    }
  },
  "contact": {
    "email": "helen@honourocean.com",
    "whatsapp": "8618923724899",
    "quotePage": "https://cargomath.com/quote/"
  },
  "updatedAt": "2026-05-12"
}