Binance to apply latest price protection mechanism to TACUSDT perpetual contract
Binance said it will apply its latest Last Price Protection (LPP) mechanism to the TACUSDT USDⓈ-Margined perpetual contract starting at 19:00 on Aug. 27, 2026, Beijing time, after TAC (TAC Protocol) showed abnormal price divergence across spot markets on multiple centralized exchanges. According to the official announcement, the exchange will introduce the LPP mechanism gradually through a mark price smoothing mode during the switch in an effort to reduce the impact of sudden price swings and keep pricing more stable through the transition. Binance said the LPP period for the contract will end once TAC prices across multiple exchanges move back into alignment and a stable index price becomes available from the spot market, as determined by Binance. The exchange added that it will issue a separate notice before the contract moves from LPP back to the standard mark price calculation, which it described as mark price = Median (price 1, price 2, contract price). The length of the transition will depend on price volatility and the stability of the index price.








