# Funding Mechanisms of Perpetual Contract - TSK, Perpetual Protocol ###### tags: `2023`, `DAY1`, `DEFI` {%hackmd @ethtaipei/ByQLufgQ2 %} > Share your thoughts from here ### Funding Formula Premium = Market price - Index price Funding Rate = Premium / Index Price ### Periodic vs Block-bases Funding periodic: 每隔多久由 relayer update funding payment, 差不多 8hr ex: Binance, FT block-based: 跟著 swap 協議 diamond protocol: Perp V2