[6] The vast majority of cash, around one trillion euro, is held as an asset and used only sporadically for payments, or is circulating outside the euro area. Chart 4 Estimates of components of euro banknote circulation for 2019 (percentages, rounded figures without decimals)  Source: Zamora-Pérez.
The store of value function guarantees a persistent level of demand for banknotes even as digital payments take off. And cash also has unique features which underpin its demand. For example, it is often the only way to guarantee financial inclusion, as it allows users to make payments at no cost.