Important Risk Note: While trading can be beneficial in most cases, it also involves some risk assessment. Read our ‘Terms & Conditions’ and ‘Disclaimer’ pages before registering. Traders have to know their capital gain tax liability in their country. Selling or buying commodity options for U.S residents is illegal, even if they’re considered ‘Prediction’ contracts. There can be exceptions if they are legally exempt, or if they are traded on a CFTC-registered platform for exchange.