First-in-First-out System

Application

The First-in-First-out System, when applied to cryptocurrency and derivatives, functions as an inventory accounting method for tracking the disposition of identical assets; this is particularly relevant for tax reporting and cost basis determination in decentralized finance. Within options trading, it dictates which contracts are considered ‘sold’ first when multiple positions with varying strike prices or expiration dates exist, impacting realized gains or losses. Its implementation necessitates meticulous record-keeping, especially in environments lacking centralized clearinghouses, to accurately reflect the order of transactions and associated costs.