The basic structure of Input-Output (I-O) and associated tables, special treatments adopted in compiling I-O tables, and using I-O tables for analysis are shown in Australian System of National Accounts: Concepts, Sources and Methods, Chapter 22, Input-Output Tables.
The I-O tables are formatted in millions of dollars.
Additivity
The sum of the components may not equal the reported total in all cases. This has been caused by small values (less than $500,000) being assigned to different industries or products as part of the modelling processes used in the compilation of I-O tables. Cells with a value of less than $500,000, while not displayed in the tables, have been included in the total values. The totals reported for both the Input-Output tables and the Input-Output Product details tables published in the Australian National Accounts: Input-Output Tables are related and sum to the same values. Data in some Excel spreadsheets contain additional decimal places to facilitate loading into some analysis modelling applications.
Impact of small value modelling
Some modelling techniques are used to balance and populate the tables, particularly where directly collected information is not available for every cell. Consequently, very small values may be estimated in certain cells and the statistical accuracy of this data cannot be verified. Where values less than $1 million are shown, they solely facilitate reconciliation, row and column balancing, and do not carry any economic meaning.