According to the practice of domestic futures industry, the deposit (available funds) deposited in futures companies is interest-free, which means that the available funds in your futures account are interest-free. Similarly, if you occupy the funds of the futures company because of insufficient funds, the futures company will not let you pay the interest on the funds, but will only let you add a margin.

However, the funds (available funds) deposited by futures companies in the exchange bear interest on demand, so some futures companies also calculate interest on customers' deposits. As for the funds you call back to your bank card, the bank will pay interest.