Major companies face a difficult task in estimating the impact of tariffs on their business

Executives at some of the world's biggest companies are faced with the tricky task of explaining how President Donald Trump's tariffs are impacting their business as they discuss the latest financial results. Trump has imposed tariffs against key U.S. trading partners, while also postponing other tariffs to give companies a chance to negotiate. Over the last few months, tariffs have been announced and in some cases withdrawn within days.