What is the US single window?

The Automated Commercial Environment (ACE). CBP calls it the US single window because it provides one centralised access point connecting CBP, partner government agencies and the business community.

Does the WTO require a single window?

The Trade Facilitation Agreement says members shall endeavour to establish or maintain one — a commitment to work towards it — and that agencies shouldn't request the same data again except in limited, published exceptions.

Is Fasah a single window?

Fasah describes itself as a unified digital platform for Saudi Arabia's import and export system, and it is the system Saudi Arabia lists in its WTO single window notification.

Term

Trade single window

A trade single window is a facility that lets traders lodge standardised information and documents with a single entry point to meet all import, export and transit regulatory requirements — and, when the data is electronic, submit each data element only once. The definition is UN/CEFACT's Recommendation 33; the WTO's Trade Facilitation Agreement asks members to work towards one.

Also called single window, national single window, customs single window, single window environment, UN/CEFACT Recommendation 33Updated 14 October 2026

The systems, in their own words

Where	System	How it is described
US	ACE, the Automated Commercial Environment	The US single window: one centralised access point connecting CBP, partner government agencies and the business community
EU	EU Single Window Environment for Customs	Each member state must establish and run a national single window environment for customs, with a single communication channel for traders
Saudi Arabia	Fasah	A unified digital platform for the import and export system
India	SWIFT	The system through which India has implemented the single window, in its WTO notification
UAE	Abu Dhabi Customs, Dubai Customs and Dubai Trade	Listed in the UAE's WTO notification

What the WTO asks

The Trade Facilitation Agreement entered into force on 22 February 2017. Its Article 10.4 says members shall endeavour to establish or maintain a single window, and that once information has been received through it, the same documentation or data shall not be requested again by participating agencies except in urgent circumstances and other limited exceptions that are made public. The EU's single window regulation, 2022/2399, applies some of its articles only from 13 December 2031.

Worked example: one import, three agencies

Without a single window: consignee, HS code and value typed into the customs declaration, the food-safety permit and the conformity certificate — 3 entries of the same data · with one: entered once at the single entry point and shared with each agency, which may not ask again except in urgent or published exceptions

Illustrative; the limit on asking twice is Article 10.4.2 of the WTO Trade Facilitation Agreement.

The mistake people make

Calling any trade platform a single window. UN/CEFACT notes that private companies describing their solutions as a single window without endorsement from a relevant regulatory body add to the confusion. A port community system qualifies only if it meets all five key elements of Recommendation 33 — one of them being that it is the only port community system in the economy.

FAQ