A payment made by investors for new shares. The term would apply to payments made when a company first floats on the stock exchange and also when it has a rights issue. Call payments can be staged. For instance, if you subscribe to an offer on flotation, the terms may require you to pay in two instalments - the first at the time of your subscription and the second six months later. Issuing companies use this as a device to attract shareholders, and it was widely used when the UK government privatised state-owned industries in the 1980s and 1990s.