Japanese Prime Minister Shigeru Ishiba pushed back against the idea there has been little progress in negotiations with the US on a trade deal as a deadline looms for a 24% across-the-board tariff to take force.

US President Donald Trump cast doubt on reaching a trade deal with Japan, a day after threatening higher tariffs on Japanese exports to the United States, claiming the country won’t buy American rice.

As Tokyo seeks to avert the US' threat to impose tariffs of up to 35 per cent on Japanese goods, Prime Minister Ishiba stressed that Japan, as the biggest investor nation in the US economy, should be treated differently from other countries.