Foundation
Landed Duty
Full duty — base rate plus every stacked overlay, fees, and program rates.
01
Base rate plus every overlay
One calculation returns an itemized breakdown — base duty, each Chapter 99 overlay stacked on top, and CBP’s MPF and HMF fees — totalled to the full landed duty, with a plain-language basis for every line.
02
Never double-count a duty
Where the schedule says pick exactly one — like the Section 232 metal headings — the calculator de-duplicates by exclusivity group, charging only the higher measure and recording why.
03
The right rate, the right base
Section 232 derivative duties assess on metal-content value, HMF applies only to ocean entries, MPF is clamped to its fiscal-year min and max, and the base can come from an MFN or FTA line — each selected by entry date.
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