Overview
- Sui began rolling out a protocol feature on May 20 that lets users and businesses send an allowlisted set of stablecoins on Mainnet with $0.00 gas fees and without holding SUI.
- The zero-fee transfers apply only to specific Move operations for seven supported stablecoins, including USDC, USDsui, suiUSDe, AUSD, FDUSD, USDB, and USDY, enforced by an on-chain allowlist.
- The feature is powered by a new Address Balances account-style system that tracks fungible token holdings and lets the protocol accept zero gas price for qualifying stablecoin transfers.
- Sui built a congestion-priority safeguard so that when the network is busy paid transactions get processing priority over gasless transfers, which could delay free transfers during peak load.
- Fireblocks and other custodians are supporting the launch to speed institutional use, Sui cites over $1 trillion in stablecoin transfer volume since August 2025, and SUI’s price rose about 8% after the announcement.