T+ is a securities (or futures) trading system. A trading system in which the securities (or futures) and the price settlement and delivery procedures are handled well on the day when the securities (or futures) are traded is called T+ trading. Generally speaking, the securities (or futures) bought that day can be sold that day.

T+ trading was once implemented in China securities market, because it was too speculative. In order to ensure the stability of the securities market, the Shanghai Stock Exchange and Shenzhen Stock Exchange now implement the "T+1" trading method for stock and fund trading. That is, those bought on the same day will not be sold until the next trading day. At the same time, the funds are still "T+", that is, the funds returned on the same day can be used immediately. However, the Shanghai Futures Exchange implements the trading mode of "T+" for steel futures trading. At present, China's stock market implements T+1 clearing system, while the futures market implements T+.