USTariffRates

Best import duty calculator

Best Import Duty Calculators for US Importers

Compare the best import duty calculators for HTS lookup, US customs duty estimates, tariff overlays, and landed-cost planning.

Updated June 2026Built for importer, broker, and compliance workflows
Calculate US import dutyAPI options

How we picked these tools

The best import duty calculator depends on the job. A broker needs an auditable HTS and duty stack. A sourcing team needs country scenarios. An ecommerce team needs a fast estimate before purchase orders or repricing decisions.

Uses HTS-level duty data instead of only broad HS6 categories.
Shows surcharge layers such as Section 301, Section 232, and trade-remedy risk.
Separates duty from customs fees, freight, and insurance inputs.
Links back to official tariff or ruling sources when the decision needs review.

Comparison

Pick 1

US Tariff Rates landed cost calculator

Importers and brokers who need HTS search plus an itemized US duty stack.

Open calculator

Strengths

  • Plain-English HTS search and direct code lookup in the same workflow.
  • Itemized duty, surcharge, MPF, HMF, freight, and insurance inputs.
  • Fast path from calculator result to saved watchlist and API workflows.

Watch-outs

  • Final customs classification still needs professional review for complex goods.

Pick 2

USITC HTS search

Official tariff schedule verification.

Open source

Strengths

  • Official US Harmonized Tariff Schedule search surface.
  • Useful for confirming exact tariff language and legal notes.

Watch-outs

  • Not built as a landed-cost calculator.
  • Requires the user to interpret tariff notes and additional duty programs.

Pick 3

Spreadsheet landed-cost model

Teams with custom internal costing assumptions.

Strengths

  • Flexible for internal freight, insurance, margin, and warehouse cost assumptions.
  • Easy to adapt to product-specific pricing reviews.

Watch-outs

  • Tariff data can become stale quickly unless connected to a current HTS source.
  • Harder to audit when duty formulas and assumptions spread across tabs.

Pick 4

Broker quote workflow

High-value shipments and classifications with legal ambiguity.

Strengths

  • Pairs duty estimates with broker review and entry-filing context.
  • Best fit when the importer needs operational accountability.

Watch-outs

  • Slower than self-serve tools for early sourcing and pricing checks.

Official sources to verify

Use these primary sources when a tariff decision needs legal, operational, or audit review.

USITC Harmonized Tariff Schedule searchCBP rulings and legal decisionsCBP Automated Commercial Environment

FAQ

What is the best import duty calculator for US imports?

For quick US duty estimates, use a calculator that accepts either an HTS code or a product description, then itemizes base duty, surcharge layers, and customs fees. US Tariff Rates is designed for that workflow; USITC HTS remains the official source to verify tariff language.

Can an import duty calculator replace a customs broker?

No. A calculator can speed up screening, quoting, and sourcing decisions, but complex classifications and high-value shipments should still be reviewed by a licensed broker or trade professional.

What inputs do I need to calculate import duty?

At minimum, you need the HTS code or product description, country of origin, and customs value. For landed cost, add freight, insurance, entry type, and any brokerage or handling assumptions.

Related guides and tools

HTS code lookupLanded cost calculatorBest landed cost calculators

Import duty calculators FAQ

Frequently Asked Questions

Import duty calculators FAQ

Frequently Asked Questions