This report is a summary of the findings in from the project “NFR 283312 – FISH TAX: Resource rent and taxation in the Norwegian Fisheries and Aquaculture industries” funded by the Norwegian Research Council SKATT programme. The report consists of three separate papers: Paper 1 “Aquaculture license auctions and inframarginal rents in salmon aquaculture” Paper 2 “Sustainable growth, resource rent and taxes in aquaculture” Paper 3 “Economic rents in salmon aquaculture”