We will be passing a Stamp Duty Reserve Tax on to clients who open new positions in UK-listed stocks. Stamp Duty is a regulatory transaction tax levied by the UK government on the electronic purchase of all UK-listed stocks. It is currently set at 0.5% of the value of the stock purchase (SDRT is also normally charged at 0.5% but is rounded up to the nearest 1p). This is a mandatory regulatory transaction tax that applies to all clients trading UK-listed stocks, regardless of their country of residence.