US Import Duty & Landed Cost Calculator for Ecommerce Sellers

Estimate US import charges from a confirmed HTS duty rate. This tool does not look up or classify HTS codes; use it after HTSUS research or broker confirmation to turn customs value, tariffs, MPF, HMF and clearance cost into landed cost per unit.

Import Duty and Landed Cost Inputs

Import Charges
Base Duty:$0.00
Additional Tariff:$0.00
MPF:$0.00
HMF:$0.00
Brokerage:$0.00
Total Import Charges:$0.00
Landed Cost
Shipment Landed Cost:$0.00
Landed Cost / Unit:$0.00
Import Charges / Customs Value:0.00%
Unit Status:OK
Low / Base / High Tariff Scenarios
Low Scenario:0.00% / $0.00 / $0.00
Base Scenario:0.00% / $0.00 / $0.00
High Scenario:0.00% / $0.00 / $0.00

What This Calculator Does and Does Not Do

Use this model after you have a confirmed HTS duty rate and any origin-specific tariff. It estimates cash outlay for one US-bound shipment. It does not provide official classification, broker confirmation, admissibility review or AD/CVD screening.

Import Duty and Landed Cost Formula

Base duty and additional tariffs are calculated on customs value: Base Duty = Customs Value Γ— Base Duty Rate. Additional Tariff = Customs Value Γ— Additional Tariff Rate. MPF = Customs Value Γ— MPF Rate, limited by your min/max inputs. HMF = Customs Value Γ— HMF Rate only for ocean shipments. Landed Cost = Customs Value + Freight + Insurance + all import charges.

Example: Turning Import Charges into Unit Cost

For a $10,000 customs value shipment with $1,200 freight, $80 insurance, 5% base duty, no additional tariff, 0.3464% MPF with a $31.67 minimum and $614.35 cap, $150 brokerage and 500 units: Step 1 base duty is $500. Step 2 MPF is $34.64. Step 3 total import charges are $684.64. Step 4 shipment landed cost is $11,964.64 and landed cost per unit is $23.93. With a 25% additional tariff, landed cost rises to $14,464.64.

Key Inputs to Verify First

  • Customs value: Usually based on the price paid or payable for merchandise sold for export to the United States, subject to CBP valuation rules.
  • HTS classification and country of origin: These drive base duty, trade program eligibility and additional tariff exposure.
  • Shipment mode: HMF is modeled only for ocean cargo through US ports, not air, courier, truck or rail moves.
  • MPF floor and cap: Update the default values when CBP changes formal-entry MPF limits or your broker gives a different figure.

Assumptions and Limits

This calculator is for ecommerce cost planning. It excludes AD/CVD, bond cost, exams, storage, demurrage, PGA requirements, state tax and currency changes. Low/base/high scenarios only apply the tariff variance you enter; they do not use live policy data.

Frequently Asked Questions About US Import Duty and Landed Cost

Can this calculator classify my HTS code?
No. It does not look up or classify HTS codes. Use the USITC HTS database and confirm uncertain classifications with a licensed customs broker or trade counsel.
Should freight and insurance be included in customs value?
This model keeps duty on the customs value you enter and adds freight and insurance afterward for landed cost planning. Review CBP valuation rules for your transaction before filing entry documents.
When should HMF be included?
Include HMF for most commercial cargo imported by vessel through US ports. Leave shipment mode as air/courier/truck/rail when ocean HMF does not apply.
How do I model Section 301 tariffs?
Enter the Section 301 or other additional tariff rate in the separate additional tariff field after checking official USTR notices, HTS notes and broker guidance.
What should I do with landed cost per unit?
Use landed cost per unit as the product cost input in marketplace profit tools. Then test whether Amazon FBA ROI, Walmart WFS profit or another channel still works after import charges.

Data Sources & Policy References

  • USITC Harmonized Tariff Schedule Last verified: 2026-08-28 Source
  • CBP Basic Importing and Customs Valuation Guidance Last verified: 2026-08-28 Source
  • USTR Section 301 Tariff Actions Last verified: 2026-08-28 Source

Disclaimer: This calculator provides estimates based on user-provided data. Actual duties may vary based on HS code classification, country of origin, and current trade policies. Always verify with US Customs for accurate calculations.