While the tax, which charges firms for the greenhouse gas emissions in their products, begins on Jan. 1, payments are not due until 2027, by which time the U.K. is expected to be exempt.
But it is not yet clear whether British firms will…

While the tax, which charges firms for the greenhouse gas emissions in their products, begins on Jan. 1, payments are not due until 2027, by which time the U.K. is expected to be exempt.
But it is not yet clear whether British firms will…