How are IBISWorld’s financial ratios sourced?

We source financial ratios from the IRS SOI Tax Stats and the US Census Bureau. Our analysts estimate this data at the industry level from these aggregated sources. Yearly estimates are subject to change as historical industry data is adjusted. The estimates will reflect the latest industry research, which informs the estimate of the current year.

For additional technical details, you can download our technical notes:  Understanding Industry Financial Ratios.

For more information on this product, read US Financial Ratios.