SAMs expand upon the traditional I-O tables to also include transactions between Industries and Institutions and between Institutions themselves, thereby capturing all monetary market transactions in a given time. IMPLAN can thus more accurately be described as a Social Account Matrix (SAM) model, though the terms I-O and SAM are often used interchangeably.
The Industry by Commodity (IxC) SAM can be found in Region Details
> IxC Social Accounting Matrix
The Industry by Industry (IxI) SAM can be found in Region Details
>IxI Social Accounting Matrix