Tether is as an optimal way for users to move money effectively without having any decentralized authorities. This allows users to actively trade the currency and also use it for international transactions in countries that may have capital controls. Hence, one of the major driving forces for Tether’s supply and demand movements are the massive international payment markets. In order for Tether to equilibrate the price at one dollar, the company needs issuance and redemption to maintain it. So the company charges a 0.1% fee for every issuance or redemption, in the terms of USD this would mean that the company is always willing to buy back USDT at $0.999 and then offer USDT at $1.001. This helps maintain Tether’s price within a 0.2% spread from one dollar.