Cashtags are used to identify a specific cash account on the Cash App. When you want to send or request money from someone, you will need to know their Cashtag in order to complete the transaction. A cashtag is simply a shortcode that you create on Cash App to make it easy for friends to send you money. For example, consider a random Cashtag, say $bobsmith. So, if I wanted to send Bob Smith money, I would just type $bobsmith into the “To:” field, enter the amount and the money would be sent to him.