What HMF rate does this calculator use?

The bundled rule uses 0.125 percent of value for explicitly confirmed covered commercial-vessel cargo at a subject US port.

Does HMF apply to air freight?

This calculator does not add HMF to air, truck or rail transport. HMF concerns specified commercial-vessel cargo and covered port use.

Source-backed US fee tool

Harbor Maintenance Fee calculator

Estimate HMF only after confirming covered commercial-vessel cargo at a subject US port. The tool does not infer vessel, port, exemption or special-rule facts.

Required facts

Confirm covered ocean cargo and value

Value used for the HMF estimate in USD

Entry date

HMF applicability

Educational estimate

Confirm the facts to see an amount.

The same date-effective fee table powers this tool and the main duty calculator.

Formula

How the HMF estimate works

For explicitly confirmed covered cargo, the bundled rule multiplies the entered value by 0.125 percent and rounds the amount to cents.

Bundled rule Confirmed covered HMF = entered value × 0.125%

Boundary

Applicability is not determined from “ocean” alone

Covered port use, commercial-vessel cargo, exemptions and special movements matter. If applicability is uncertain, the main calculator excludes the amount and marks the fee assumptions for review.