“There will be no exceptions to this policy,” Trump said in a Truth Social post.

His announcement comes as the US begins formally notifying affected countries of the tariffs declared earlier this year, with letters and deals set to roll out on Monday.

Trump has long criticised BRICS, an economic bloc whose members include Brazil, Russia, India, China, and South Africa.

The organisation was designed to boost countries’ international standing and challenge the US and western Europe.

The group was later expanded to include Iran, Egypt, Ethiopia, and the United Arab Emirates (UAE) in 2024. The following year, Indonesia became the first South-east Asia member.

In January, Nigeria joined Belarus, Bolivia, Cuba, Kazakhstan, Malaysia, Thailand, Uganda, and Uzbekistan as BRICS’ ninth partner country after the alliance’s partner-country category was created at the 16th BRICS Summit in 2024.

Nigeria has continued to for a full membership.

Since taking office in January, Trump has announced a series of import taxes on goods from other countries, including a on Nigeria.

Meanwhile, Brazil said BRICS’ foreign ministers expressed “serious concern at the prospect of a fragmented global economy and the weakening of multilateralism” in Rio de Janeiro.

Brazil’s stance was not a joint statement signed by members of the bloc as reports of differences within the alliance have grown.

The statement also did not name the United States — whose unilateral tariffs have raised concerns about a global economic slowdown.

At the start of the tariffs, Trump encouraged affected countries to make deals with the US in hopes of a concession.

As the tariff letters go out on Monday, the US president asked his global counterparts to “take it or leave it”.