ETF fund managers make money by charging investors an annual ongoing fee (look out for the OCF or total expense ratio TER in the KID or Key Information Document), which covers the cost of running the fund. Investors can make money from ETFs if the value of their ETF investment increases over time and you are ultimately able to sell the ETF for a higher price than you bought it for. Some ETFs also pay investors a dividend which can act as a regular income while you own the ETF.