According to @justinsuntron, the 20% annual yield offered by USDD is not unusual in the stablecoin market, as similar products like USDS have offered rates up to 11%. This rate serves as a competitive response within the market. The interest for USDD is currently subsidized directly by the Tron protocol, which has achieved substantial annual revenue.

According to Justin Sun's tweet, after the upgrade to USDD 2.0, Tron DAO has launched a deposit event on JustLend DAO where users can earn interest subsidies. The annual percentage yield (APY) during the event can reach around 20%. The initial yield is subsidized by Tron DAO, as confirmed by the contract address shared in Justin Sun's tweet.