• J Sainsbury average net profit margin for 2012-03-31 was 0%, a 0% decline from 2012-09-30.
• J Sainsbury average net profit margin for 2012-09-30 was 0%, a 0% decline from 2013-03-31.
• J Sainsbury average net profit margin for 2013-03-31 was 0%, a 0% decline from 2013-09-30.

Net profit margin can be defined as net Income as a portion of total sales revenue.