Deflators are used by the software whenever the Dollar Year is set to a year that differs from the Data Year to account for inflation and deflation over time. The Output Deflator converts the  Output value to the year of the dataset, while the GDP Deflator converts the Value Added values to the year of the dataset. Output Deflators are specific to each Industry, while the GDP Deflators are the same across Industries. More information on Deflators & Margins.