Impact of production losses from a polymer tax on the plastic hub. One of the measures in the National Circular Economy Programme (Nationale Programma Circulaire Economie) is research into the feasibility of taxing the production of plastics from fossil raw materials, combined with an incentive measure to achieve a circular plastics and textiles hub. We were commissioned by the Ministry of Infrastructure and Water Management (Ministerie van Infrastructuur en Waterstaat) to study the extent to which subsidies for recyclate and biobased plastics could dampen the production losses from a fossil plastics tax and what the subsidy costs would be.