US Customs Duty Calculator

The US Customs Duty Calculator is designed for importers, e-commerce sellers, freight forwarders, customs brokers, purchasing teams, and small businesses that need a quick planning estimate of import duty and landed cost. Import cost is not limited to the product invoice value. A complete estimate may include merchandise value, freight, insurance, customs duty, additional tariffs, excise or other taxes, Merchandise Processing Fee, Harbor Maintenance Fee, broker fees, carrier fees, and handling charges.

The calculator starts with merchandise value, international freight, and insurance. For this simplified estimate, customs duty is calculated on the merchandise value entered by the user. The tool then applies the duty rate, optional additional tariff rate, optional excise or other tax rate, Merchandise Processing Fee, optional Harbor Maintenance Fee, manual entry surcharge, and brokerage or handling fees. The final result is an estimated landed cost.

Landed cost is the total estimated cost of bringing goods into the United States. It usually includes the product cost, transportation cost, insurance, duties, import taxes, government fees, broker fees, and other clearance-related costs. Importers use landed cost to price products, compare suppliers, estimate profit margin, quote customers, and decide whether a shipment is financially viable before placing an order.

The customs duty rate depends on product classification. In the United States, imported goods are generally classified under the Harmonized Tariff Schedule. The duty rate can vary widely by product, material, use, country of origin, and trade program. This calculator does not classify your product or select an HS or HTS code. The user must enter the duty rate manually based on the correct classification or broker guidance.

Additional tariff rate is included because many import scenarios involve extra duties beyond the base duty rate. Additional tariffs may apply because of trade remedies, country-specific measures, anti-dumping duties, countervailing duties, Section 301 tariffs, safeguard duties, or other import programs. This calculator gives a simple additional tariff input so users can model higher-duty scenarios without changing the base duty rate.

Merchandise Processing Fee is included as an optional planning input. In many formal entry scenarios, MPF is calculated as a percentage of the merchandise value and is subject to minimum and maximum limits. This calculator uses the 2026 constants saved in the project’s calculator file and applies the minimum and maximum limits automatically when MPF is enabled. Informal entries, courier shipments, special cases, and future fee updates may differ.

Harbor Maintenance Fee is also included as an optional input. HMF is usually relevant for ocean imports and is not normally applied to every transport mode. The calculator turns it on by default for ocean freight examples and off for air, truck, rail, courier, or other transport modes unless the user manually changes the setting. This helps users build a more realistic ocean landed cost estimate.

Brokerage and handling fees can be significant even when duty is low. A shipment may involve broker clearance fees, carrier disbursement fees, delivery order fees, terminal handling charges, documentation charges, storage, exam fees, or other service charges. This calculator allows one brokerage and handling fee input to keep the estimate simple. Users can combine expected non-government service charges into that field.

Many users search for customs duty calculator, US import duty calculator, landed cost calculator, import tax calculator USA, customs fee calculator, MPF calculator, HMF calculator, tariff calculator, import cost calculator, and duty rate calculator. These searches usually have one practical goal: the importer wants to estimate the total cost before shipping goods into the United States.

For e-commerce sellers, customs duty estimation can affect pricing and profit margin. A product that looks profitable at supplier price may become less profitable after freight, duty, tariffs, MPF, HMF, broker fees, and domestic delivery costs. This calculator helps sellers test duty rates and additional tariffs before committing to a purchase order. It can also help compare air freight and ocean freight scenarios.

For businesses importing larger shipments, the calculator can support budget planning and internal approvals. Purchasing teams can estimate landed cost for samples, containers, replenishment orders, or high-tariff products. Finance teams can compare estimated government charges with broker statements. Operations teams can model how freight and insurance affect total import cost. The calculator is not a substitute for entry filing, but it is useful for early-stage planning.

This is a simplified customs duty estimator, not an official customs entry calculation. Actual import charges can differ because of HTS classification, country of origin, valuation rules, assists, royalties, related-party pricing, trade remedies, free trade agreements, de minimis rules, informal-entry treatment, partner government agency requirements, broker fees, exams, storage, and CBP processing. Use this calculator for planning, then verify final charges with CBP resources, a licensed customs broker, or official entry documents.