ETF funds are on-exchange funds. When investors trade on the exchange, they only charge commission fees. The fees = transaction amount × commission rate. Different securities companies have different commission rates. Generally it is three ten thousandths.

For example, if Xiao Tang purchases 20,000 shares of an ETF fund on the market, the transaction price is 3 yuan, and the commission rate is 0.03%, then the handling fee he needs to pay when purchasing the fund = 20,000× 3×3/10000=18 yuan.

The commission fee is charged in both directions, that is, investors are charged once when buying and again when selling.