Hyperliquid just flipped the switch on USDT borrowing within its testnet environment, a move that sets the stage for a mainnet deployment once the next network upgrade rolls through.

The addition of USDT to Hyperliquid’s portfolio margin feature means traders will soon be able to borrow the world’s most widely used stablecoin using a unified account that handles both spot and perpetual positions. Until now, that borrowing capability was limited to USDC, which launched alongside the portfolio margin feature back in December 2025.

What portfolio margin actually does

Instead of maintaining separate collateral pools for spot trades and perpetual positions, Hyperliquid’s system lets users manage everything under a single account structure. Traders can borrow stablecoins against their HYPE token holdings as collateral, then deploy that borrowed capital across both spot and perps markets without shuffling funds between isolated accounts.

The technical backbone

Hyperliquid operates its own custom Layer-1 blockchain built around HyperBFT consensus, which delivers sub-second transaction finality. The on-chain order book system, called HyperCore, processes trades directly on the blockchain rather than relying on off-chain matching engines that settle on-chain later.

The platform also operates without KYC requirements. As of May 2026, 27 validators are supporting the Hyperliquid network.

What’s coming next

Hyperliquid’s roadmap includes adding USDH, the platform’s native stablecoin, and BTC as both borrowable and collateral assets within the portfolio margin system.

The mainnet timeline is tied to the next network upgrade, with no specific date announced. Testnet deployments on Hyperliquid have historically transitioned to mainnet within weeks rather than months.