The amount of interest that a cryptocurrency earns can vary depending on a number of factors, such as the current market demand for the cryptocurrency, the inflation rate of the cryptocurrency, and the specific terms of any staking or interest-earning program that the cryptocurrency may offer. Some cryptocurrencies, such as Bitcoin, may not offer any interest or rewards for holding the cryptocurrency. Other cryptocurrencies, such as those that use a Proof of Stake (PoS) consensus algorithm, may offer rewards for holding and supporting the network through a process called staking. It's important to carefully research the specific terms and conditions of any interest-earning program before participating.