YASOtherCarrier-Mandated
Yokohama Assessment Surcharge (YAS)
YAS originated as a surcharge specific to the Port of Yokohama in Japan to cover port facility assessment and improvement costs. It has since been used as a template by other Japanese ports and sometimes as a generic 'port assessment surcharge' by carriers operating in the Japan trade lane.
Per Container
Category:Basic Shipping FeeChina Export Local ChargesDestination Import Charges
Applies to:
FCLLCLAirRailCourierRoadFBAAs Request
Typical Cost Range
20ft Container
$10–$40
per 20ft
40ft Container
$20–$80
per 40ft
YAS is relatively low compared to other surcharges. Usually JPY 1,000-5,000 per container.
Who Pays?
Shipper (When CIF, DAP)
Consignee (When EXW, FOB)
Negotiability
Set by carrier or port authority — not negotiable.
YAS is a port-imposed charge, not carrier-imposed. Cannot be negotiated with the carrier.
Adjustment Frequency
MonthlyWeeklyFixed
Current rate reviewed: Annual contract
Chargeable Unit
Per 20FT
Formula / Calculation
YAS = Port Authority Assessment per Container (JPY-based, converted to USD)Japanportassessmentspecific port
Frequently Asked Questions
Is YAS only for Yokohama port?
Originally yes, but similar surcharges now exist at other Japanese ports (Tokyo, Nagoya, Osaka) under various names. Always check the port of loading.
How is YAS shown on the freight invoice?
Typically in JPY with the USD equivalent. Check whether it's included in the base ocean freight or shown separately.
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