International Trade Law and Developing Countries

International trade law treats developing countries differently from wealthy ones — deliberately. Through special and differential treatment at the WTO and trade-preference programs like the U.S. Generalized System of Preferences (GSP), the system gives developing economies easier terms and duty-free access designed to support their growth. For U.S. importers, these programs have historically meant lower or zero duties on goods sourced from qualifying developing countries — when the programs are in effect. That last point matters right now: the U.S. GSP program has lapsed, which changes the picture for sourcing. This guide explains the framework and the current status.

Special and Differential Treatment at the WTO

WTO agreements build in special and differential treatment (S&DT) for developing and least-developed countries — provisions that give them more flexibility and support, such as longer timeframes to implement obligations, technical assistance, and (for the poorest members) exemptions from certain commitments. The aim is to integrate developing economies into the trading system without holding them to the same immediate obligations as advanced economies. S&DT is a structural feature of trade law, not a temporary program.

Trade-Preference Programs: GSP and Others

Beyond WTO rules, wealthy countries run unilateral preference programs that grant duty-free or reduced-duty access to imports from developing countries. The flagship U.S. program is the Generalized System of Preferences (GSP), which historically let thousands of products from designated beneficiary developing countries enter the U.S. duty-free. Other targeted programs (such as the African Growth and Opportunity Act) serve specific regions. For importers, sourcing from a beneficiary country under an active program could mean eliminating the duty on eligible goods entirely.

The Current Catch: GSP Has Lapsed

Here’s the part importers must not miss: U.S. GSP expired on December 31, 2020, and as of 2026 it has not been renewed by Congress. While it’s lapsed, imports that would have qualified for GSP duty-free treatment are subject to normal duties. Historically, when Congress has reauthorized GSP it has done so retroactively, with CBP refunding duties paid during the lapse — so many importers continue to flag GSP-eligible entries to preserve the ability to claim refunds if the program is renewed. The practical guidance: don’t assume GSP duty-free treatment is available today, but track eligibility in case of retroactive renewal. (Confirm the program’s current status before relying on it — this is a moving target.)

What This Means for U.S. Importers

The framework cuts two ways for importers sourcing from developing countries. The opportunity is real duty savings when preference programs are active and the goods qualify (correct classification, origin, and beneficiary-country rules). The risk is assuming a benefit that isn’t currently in effect — as with the lapsed GSP — and mis-budgeting duties as a result. As always, the benefits turn on accurate classification and country of origin, which determine both the duty rate and program eligibility.

Frequently Asked Questions

How does international trade law help developing countries?

Mainly through special and differential treatment at the WTO (flexibility, longer implementation periods, technical assistance, and exemptions for the least-developed members) and through unilateral preference programs like the U.S. GSP that grant duty-free or reduced-duty access to qualifying imports.

What is the Generalized System of Preferences (GSP)?

A U.S. trade-preference program that historically allowed thousands of products from designated beneficiary developing countries to enter duty-free. It’s designed to support development by improving these countries’ access to the U.S. market.

Is GSP currently in effect?

No. U.S. GSP expired on December 31, 2020, and as of 2026 has not been renewed. Goods that would have qualified are currently subject to normal duties. Because Congress has historically renewed GSP retroactively with duty refunds, many importers still flag eligible entries — but confirm the current status before relying on it.

What is special and differential treatment?

A set of WTO provisions giving developing and least-developed countries more favorable terms — longer timeframes to meet obligations, technical assistance, and certain exemptions — to help integrate them into the global trading system without imposing the same immediate commitments as on advanced economies.

Sourcing from developing countries can mean real duty savings — but only when the programs are active and the goods qualify. Reidel Law Firm advises importers on preference programs, origin, and duty planning on flat-fee terms. Talk to an international trade attorney.