Guides

What is ASYCUDA World?

ASYCUDA, the Automated System for Customs Data, is customs software developed by UNCTAD. It is installed at a government's request and adapted to that country's customs rules, tariffs and laws. ASYCUDA World is the newest, web-based generation. Many declarations you will meet, from a Uganda Bill of Entry to a Trinidad e-C82, are filed in it.

Versions and reach

UNCTAD's software has existed in three generations: ASYCUDA 2.7, ASYCUDA++ and ASYCUDA World. A 2024 report says ASYCUDA World serves over 100 economies. Older sources give smaller counts, and the figures differ by year and definition, so check UNCTAD for a current list.

In French-speaking countries the system is often called SYDONIA. Our records show Benin and Niger describing SYDONIA as their ASYCUDA implementation.

How filing works: Uganda as an example

The Uganda Revenue Authority describes ASYCUDA World as an online system used to process all goods imported or exported, where users self-declare, assess and pay taxes. Its listed users are licensed clearing agents, bond keepers, customs officers, cargo handlers and importers or exporters.

To clear goods, the importer appoints a clearing agent, who logs in, captures, validates and assesses the declaration. The importer pays at the bank against a payment reference number (PRN). The URA states that no declaration is processed by customs if payment is required and has not been made.

The platform is shared, the rules are not

ASYCUDA World is the platform, not the rule book. Mali's customs service, for example, says a detailed declaration may only be lodged by an authorised customs broker, and other countries let importers act directly. The declaration also carries different names: Single Administrative Document (SAD), Bill of Entry, IM4 or a national form. Check the destination's own customs authority.

Frequently asked questions

Is ASYCUDA World a customs form?

No. It is the software. The declaration inside it is usually a Single Administrative Document or a bill of entry, and its name varies by country.

Can I file in ASYCUDA World myself?

It depends on the country. In Uganda, importers and exporters are listed users, but clearing goods requires an appointed clearing agent. In Mali, only an authorised customs broker may lodge a detailed declaration.

Does every country use ASYCUDA World?

No. Nigeria files through NICIS II and Mexico through VUCEM, for example. Check which system your destination uses.

Sources

Last verified: 2026-10-17

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