RE:50% royaltyJust found this: https://www.google.co.uk/url?sa=t&source=web&rct=j&url=https://www.pwc.com/pg/en/publications/assets/2012-png-tax-resource-guide.pdf&ved=2ahUKEwi38fLx5PznAhXMesAKHZNSBjYQFjAKegQICBAB&usg=AOvVaw3dlqOF6hf7sqxoGwag_SA9 If knt is classed as a resident company it looks to be around 37%. If its a non resident company it looks to be 40%. On a quick skim this document only mentions taxation, whether this is total taxation including royalties etc im not sure ill have to do more research and contact the company. Its gone 10pm here in the UK so its a job for tomorrow.