Cash may no longer be king in a world of digital transactions, but it retains an important role. This is, above all else, because most of us – more than 90 per cent according to Central Bank research – use notes and coins at some stage. And some – including those uncomfortable with using digital payment methods – still prefer to use it most of the time. But the risk of losing electronic payments for a period of time means some cash holdings may indeed be wise. They have invested in digital payments, but they also need to continue to accept notes and coins, not just in special circumstances but as an ongoing part of business life.