At Plus500, the minimum deposit is $100. However, this does not mean that you can invest in everything with this amount. Each security within the Plus500 software has a minimum investment, which they call the unit amount. For example, at the time of writing, this is 0.02 contracts or 1/50th of the value of one Bitcoin for Bitcoin. For the ING stock, this is currently 50 shares. 50 ING shares currently cost around €250. However, you can apply a one-to-five leverage. This means that you need at least €50 to open a CFD investment in the ING stock.