Decoded Intelligence Signal
FIFO
intermediate
fundamentals
Verified: May 26, 2026Lexicon Core Definition
First In, First Out — a cost basis accounting method that treats the earliest-purchased lot as the first sold. The default method in most tax software and many jurisdictions; tends to produce larger gains in rising markets as lower-cost older lots are sold first.
Analysis Breakdown
First In, First Out — a cost basis accounting method that treats the earliest-purchased lot as the first sold. The default method in most tax software and many jurisdictions; tends to produce larger gains in rising markets as lower-cost older lots are sold first. Full explanation coming soon when Journey 10 content is ingested.