Tether

Type: Stablecoin Issuer (Private)

Tether is the issuer of USDT, the largest stablecoin at ~$184–185B supply and a 63–66% global market share. Tether is a private company domiciled in the Cayman Islands, affiliated with Bitfinex exchange (both owned by iFinex Inc.), and is the single most systemically important entity in the digital-asset economy outside of Bitcoin itself. The Block's 2025 institutional outlook puts USDT at 63% share / ~$185B of a stablecoin market just under $300B, with Ethena's synthetic-dollar USDe (>$14B, ~3%) emerging as the most notable new entrant. RWA.xyz lists Tether among the core tokenization-layer issuers (alongside Circle, Paxos, Ondo, Securitize) — a reminder that USDT itself is the largest tokenized-dollar claim on-chain.

Business Model

Tether's revenue model is identical to Circle's — interest on reserve assets — but at 3x the scale. With $184B in reserves held primarily in US Treasuries and equivalents, Tether generates several billion dollars in annual interest income. The company is private and publishes quarterly attestations (not full audits) from BDO Italia; reserve composition has historically been disputed, though recent attestations show predominantly Treasury/money-market holdings.

USDT's Role

USDT dominates in: offshore crypto trading (primary trading pair on Binance, Bybit, OKX), cross-border payments in Latin America, Southeast Asia, and MENA, and DeFi liquidity on non-Ethereum chains (Tron is second-largest USDT chain). Its dominance is a network effect: liquidity begets liquidity, and USDT's 2x deeper liquidity vs USDC on most offshore exchanges is self-reinforcing.

GENIUS Act Exposure

Tether is the highest-risk issuer under the GENIUS Act. As a Cayman-domiciled entity without a US banking license, it would be prohibited from issuing payment stablecoins in the US market (effective November 2026) unless Treasury certifies its home jurisdiction as having "comparable" regulation or it obtains a US license. Tether's response strategy remains unclear; it could pursue a US license, restructure for non-US-only issuance, or rely on Treasury non-certification and limit US market access. Brookings notes that even at Tether's scale, redemption is concentrated among a small set of professional counterparties (on the order of ~6 arbitrageurs redeeming per month) — a structural detail that bears on how the "singleness of money" requirement would apply to USDT.

Mentioned In

• Stablecoins — USDT as dominant global stablecoin; GENIUS Act compliance risk

Changelog

• 2026-06-24 — Compiled new sources (institutional-crypto-outlook-2026, rwa-tokenization-2026-state)
• 2026-07-22 — Full-text fetch of circle-ipo-usdc-supply-2026 and genius-act-stablecoin-law-2025 completed; no material changes to this page's existing claims (both sources corroborate the GENIUS Act reserve/licensing framework already recorded here)