Does a spoonful of sugar levy help the calories go down? An analysis of the UK soft drinks industry levy

This study evaluates the effects of the 2018 UK Soft Drinks Industry Levy. We combine novel electronic point of sale data with longitudinal nutritional information and a variety of event-study specifications. All but a few global soft drinks brands reduced sugar content and hence avoided the tiered levy. For brands that maintained their recipes, the levy was on average over-shifted resulting in substantial retail price increases and reductions in consumption, particularly for colas. The levy is responsible for a reduction in intake of about 6,600 calories per year per UK resident, 80% of which is attributable to reformulation by manufacturers.