But the economy minister argued the move would reduce consumption and improve public health, as well as raising additional revenue.

BBC: Spain passes tobacco tax increase

"It would raise revenue that government could put towards health promotion and other public health interventions to prevent obesity and reduce other cardiovascular diseases and diabetes, " she added.

BBC: Charity calls for sugar tax in Irish Republic

The devolution law hands the regions many of the central government's former responsibilities, like health care, education and public works, but only a quarter of its revenue.

ECONOMIST: Devolution isn't working as planned