Website: https://www.xaigate.com/what-is-usdt-payment-meaning-networks-fees/. What Is USDT Payment? Meaning, Networks, Fees & Compliance (2026 Updated). If you’re asking what is usdt payment, it’s simply paying with Tether (USDT) instead of card or bank rails. USDT rides public blockchains, so funds confirm in minutes and cannot be charged back after settlement. A typical flow: the merchant issues an invoice/QR with network (e.g.