MPF and HMF Calculator
Two fees apply to almost every formal entry. One has a floor and a cap that make its effective rate swing by a factor of twenty.
What decides the rate
MPF is 0.3464% of entered value, floored at $34.58 and capped at $670.86 per entry. The cap is crossed at about $193,666 of entered value, which is why consolidating shipments below that point saves nothing on MPF and above it saves nothing more.
Where this goes wrong
MPF is exempt on USMCA-originating goods and several other FTA programs when the preference is claimed. HMF applies to ocean cargo only, not air.
Inputs and assumptions
| Item | Value | Note |
|---|---|---|
| Duty rate source | USITC HTS, release 2026HTSRev22 | Read at build time from the official schedule export. The general rate column. |
| MPF | 0.3464% of entered value, min $34.58, max $670.86 | CBP User Fee Table, FY2027. The ad valorem rate is statutory; the floor and cap are adjusted each October. |
| HMF | 0.125% of entered value, ocean cargo only | CBP User Fee Table. Not charged on air freight. |
| Customs value | Transaction value, normally the price paid for the goods | Freight and insurance are not part of US customs value, unlike CIF jurisdictions. |
Questions this page answers
At what shipment value does the MPF cap start to bite?
At about $193,666 of entered value, where 0.3464% first equals the $670.86 cap. Below that the ad valorem formula governs; above it the fee is flat per entry.
When is MPF exempt?
On USMCA-originating goods and several other FTA programs when the preference is claimed, and on certain Chapter 98 entries. The exemption applies to the fee, not to other charges such as HMF or Section 301 duty.
Does this estimate include anti-dumping duty?
No. Anti-dumping and countervailing duty are case-specific and can exceed every other layer combined, so they are outside the estimate by design. The calculator covers base duty, the Section 301 and 232 layers you enter, the merchandise processing fee and the harbor maintenance fee.
Data release: 2026HTSRev22. Content as of November 10, 2026. Found an error? Tell us and it gets corrected.