TOKYO (Reuters) -Japan's leading trade negotiator said on Tuesday that the trade deal Tokyo agreed with the United States last week guarantees Japan will always receive the lowest tariff rate on chips and pharmaceuticals of all the pacts negotiated by Washington.

President Donald Trump announced a trade agreement with Japan on Tuesday, making it the largest U.S. trade partner to broker an accord as the White House threatens to impose tariffs on dozens of countries within days.

Japan’s central bank policymakers are expected to keep rates on hold this week, despite the trade deal with the U.S. relieving some uncertainty over tariffs and strengthening the case for tighter policy.

The deal imposes 15% tariffs on Japanese cars and other goods, one of the more favorable rates. While the start date and other basic elements are still unknown, Treasury Secretary Scott Bessent warned this week that the US would monitor implementation and bump the rate up to 25% if Trump isn’t satisfied.

Japan's government said on Friday that profits from a $550 billion investment package agreed in this week's tariff deal with the U.S. would be split between Japan and the U.S. according to the degree of contributions by each side.