Thailand Says Core US Trade Terms Agreed Before Washington Rules On A 12.5% Tariff Risk

The terms were settled ahead of the ruling they are meant to influence. Washington has not confirmed them. And the three red lines the minister carried to Washington go unmentioned in her account of what happened there.

BANGKOK — Thailand's deputy prime minister and commerce minister, Suphajee Suthumpun, said on Friday that Thailand and the United States had agreed the main terms of a reciprocal trade agreement, following talks in Washington on Sept. 1 with the US trade representative, Jamieson Greer, and his deputy, Rick Switzer.

American officials assured Thailand that tariffs arising from a Section 301 investigation into structural excess production capacity would be "fair and competitive", she said. Technical teams on both sides were told to settle the outstanding details as quickly as possible.

Two things about that formulation deserve attention before anything else.

The first is sequencing. Suphajee said the substantive issues were settled before the United States announces the outcome of the excess-capacity investigation — an outcome that remained under consideration when she spoke. Thailand has therefore agreed the shape of a deal without knowing the tariff number the deal is partly designed to secure.

The second is that "fair and competitive" is an assurance, not a rate. No figure has been published for the excess-capacity case, and none was given.

What is actually at stake

Two separate Section 301 investigations bear on Thai exporters, and they work differently.

The first concerns whether trading partners prohibit and effectively prevent imports of goods made with forced labour. Washington has set a 12.5 percent tariff for economies that have not adopted a prohibition, and 10 percent for those making qualifying commitments to adopt and enforce one, including through reciprocal trade agreements. Product exemptions apply. Thailand has been in the group judged not to have sufficient rules.

The distinction matters more than it first appears. The lower rate depends on the commitments a country makes, not simply on concluding a trade agreement. Signing the reciprocal agreement does not by itself move Thailand from 12.5 percent to 10.

The second investigation, into structural excess production capacity, covers vehicles and automotive parts, rubber products and machinery — three sectors central to Thai manufacturing. Its outcome is pending. Suphajee said US officials intended to expedite tariff decisions alongside progress in the trade negotiations, which is the substance of what she brought back.

The 19 percent is not the news

Some of the coverage around this announcement will imply a tariff breakthrough. There isn't one, and the reason is on the record.

Thailand initially faced a 36 percent reciprocal tariff under the International Emergency Economic Powers Act, later cut to 19 percent. A joint framework announced on Oct. 26, 2025 provided for that rate to be maintained: under the framework published by the White House, the United States committed to holding reciprocal tariffs on Thai goods at 19 percent while identifying products for a zero percent rate.

The legal ground then shifted. After the US Supreme Court ruled in February that the emergency powers act did not authorise the tariffs, Washington used Section 122 of the Trade Act to impose a temporary 10 percent general import tariff. Because that measure is time-limited, the administration pursued the two Section 301 cases instead. Those cases, not the 19 percent, are where Thailand's remaining exposure sits — which is why an assurance about them was worth flying to Washington for.

What the account does not say

Before she travelled, Suphajee named three issues Thailand would not concede: sanitary and phytosanitary rules covering imported pork containing beta-agonist growth promoters, national security, and American demands for full foreign ownership in sensitive sectors including telecommunications.

Her account of the outcome does not mention any of them.

That is not evidence they were traded away. Ministers routinely announce progress without itemising what was conceded, and the technical details are by her own description unfinished. But "core terms agreed" is precisely the phrasing under which a concession would sit unannounced, and until the text is published — or the three points are addressed directly — the question is open. Thailand's own tariff reductions, in any case, do not take effect until an agreement is concluded and approved by the cabinet and parliament.

Nor has the office of the US trade representative publicly confirmed the Thai characterisation. Everything above is Bangkok's account of a bilateral meeting.

The numbers behind the urgency

Suphajee said concluding the negotiations was critical to preserving Thai exporters' competitiveness in their largest export market, and to protecting more than 400,000 domestic jobs.

The United States was Thailand's second-largest trading partner in 2025. Total bilateral trade exceeded 3 trillion baht. Thai exports to the United States reached 2.37 trillion baht against roughly 700 billion baht of imports, leaving a reported Thai surplus of 1.68 trillion baht.

That surplus is the reason Thailand is in this negotiation at all. Suphajee said Washington had used tariffs to press surplus-running partners into talks aimed at rebalancing trade, and described the reciprocal agreement as the framework the United States is pursuing with countries where it runs a deficit.

What to watch

The Section 301 excess-capacity ruling, and whether "fair and competitive" survives contact with a number. Thailand has agreed terms in advance of it. If the published rate is close to what neighbouring exporters receive, the assurance held. If it is not, Bangkok has little leverage left to apply.

Whether Thailand adopts a forced-labour import prohibition. The 10 percent rate depends on that commitment rather than on the agreement itself. Watch for draft legislation or a regulatory instrument, which is the concrete test.

Whether the three red lines appear in the final text. Pork with beta-agonists, national security and foreign ownership in telecommunications were declared non-negotiable in August. The agreement must go to the cabinet and parliament, so the text will eventually be visible. That is where the answer is.