The 2018 Input-Output (I-O) Accounts of the Philippines is the twelfth (12th) of a series of inter-industry studies of the Philippine economy since the construction of the first benchmark I-O table in 1961. The first two series, 1961 and 1965 I-O accounts, were prepared and published independently by the National Economic Council (the forerunner of the National Economic Development Authority, NEDA) and the Bureau of Census and Statistics (the then National Statistics Office, NSO). The next three tables (1969, 1974 and 1979) were collaborative works of these two offices. With the creation of the National Statistical Coordination Board (NSCB), the succeeding series, 1985, 1988, 1994, and 2000 were produced as a joint undertaking of the NSCB and NSO. With the virtue of Republic Act No. 10625, the Philippine Statistics Authority (PSA) was created from the merging of the NSCB, NSO, Bureau of Agricultural Statistics (BAS), and Bureau of Labor and Employment (BLES). As the central statistical authority of the Philippine government on primary data collection and production of statistics, the PSA released the two latest I-O tables of 2006 and 2018.