Costco Wholesale Corp. (COST)

• Annual Data
• Quarterly Data

• Annual Data
• Quarterly Data

Costco Wholesale Corp., decomposition of ROE

	ROE	=	ROA	×	Financial Leverage
Sep 2, 2018		=		×
Sep 3, 2017		=		×
Aug 28, 2016		=		×
Aug 30, 2015		=		×
Aug 31, 2014		=		×
Sep 1, 2013		=		×

Based on: 10-K (filing date: 2018-10-26), 10-K (filing date: 2017-10-18), 10-K (filing date: 2016-10-12), 10-K (filing date: 2015-10-14), 10-K (filing date: 2014-10-15), 10-K (filing date: 2013-10-16).

The primary reason for the decrease in return on equity ratio (ROE) over 2018 year is the decrease in financial leverage ratio.

• Annual Data
• Quarterly Data

Costco Wholesale Corp., decomposition of ROE

	ROE	=	Net Profit Margin	×	Asset Turnover	×	Financial Leverage
Sep 2, 2018		=		×		×
Sep 3, 2017		=		×		×
Aug 28, 2016		=		×		×
Aug 30, 2015		=		×		×
Aug 31, 2014		=		×		×
Sep 1, 2013		=		×		×

Based on: 10-K (filing date: 2018-10-26), 10-K (filing date: 2017-10-18), 10-K (filing date: 2016-10-12), 10-K (filing date: 2015-10-14), 10-K (filing date: 2014-10-15), 10-K (filing date: 2013-10-16).

The primary reason for the decrease in return on equity ratio (ROE) over 2018 year is the decrease in financial leverage ratio.

• Annual Data
• Quarterly Data

Costco Wholesale Corp., decomposition of ROE

	ROE	=	Tax Burden	×	Interest Burden	×	EBIT Margin	×	Asset Turnover	×	Financial Leverage
Sep 2, 2018		=		×		×		×		×
Sep 3, 2017		=		×		×		×		×
Aug 28, 2016		=		×		×		×		×
Aug 30, 2015		=		×		×		×		×
Aug 31, 2014		=		×		×		×		×
Sep 1, 2013		=		×		×		×		×

Based on: 10-K (filing date: 2018-10-26), 10-K (filing date: 2017-10-18), 10-K (filing date: 2016-10-12), 10-K (filing date: 2015-10-14), 10-K (filing date: 2014-10-15), 10-K (filing date: 2013-10-16).

The primary reason for the decrease in return on equity ratio (ROE) over 2018 year is the decrease in financial leverage ratio.

• Annual Data
• Quarterly Data

Costco Wholesale Corp., decomposition of ROA

	ROA	=	Net Profit Margin	×	Asset Turnover
Sep 2, 2018		=		×
Sep 3, 2017		=		×
Aug 28, 2016		=		×
Aug 30, 2015		=		×
Aug 31, 2014		=		×
Sep 1, 2013		=		×

Based on: 10-K (filing date: 2018-10-26), 10-K (filing date: 2017-10-18), 10-K (filing date: 2016-10-12), 10-K (filing date: 2015-10-14), 10-K (filing date: 2014-10-15), 10-K (filing date: 2013-10-16).

The primary reason for the increase in return on assets ratio (ROA) over 2018 year is the increase in profitability measured by net profit margin ratio.

• Annual Data
• Quarterly Data

Costco Wholesale Corp., decomposition of ROA

	ROA	=	Tax Burden	×	Interest Burden	×	EBIT Margin	×	Asset Turnover
Sep 2, 2018		=		×		×		×
Sep 3, 2017		=		×		×		×
Aug 28, 2016		=		×		×		×
Aug 30, 2015		=		×		×		×
Aug 31, 2014		=		×		×		×
Sep 1, 2013		=		×		×		×

Based on: 10-K (filing date: 2018-10-26), 10-K (filing date: 2017-10-18), 10-K (filing date: 2016-10-12), 10-K (filing date: 2015-10-14), 10-K (filing date: 2014-10-15), 10-K (filing date: 2013-10-16).

The primary reason for the increase in return on assets ratio (ROA) over 2018 year is the increase in effect of taxes measured by tax burden ratio.

• Annual Data
• Quarterly Data

Costco Wholesale Corp., decomposition of net profit margin ratio

	Net Profit Margin	=	Tax Burden	×	Interest Burden	×	EBIT Margin
Sep 2, 2018		=		×		×
Sep 3, 2017		=		×		×
Aug 28, 2016		=		×		×
Aug 30, 2015		=		×		×
Aug 31, 2014		=		×		×
Sep 1, 2013		=		×		×

Based on: 10-K (filing date: 2018-10-26), 10-K (filing date: 2017-10-18), 10-K (filing date: 2016-10-12), 10-K (filing date: 2015-10-14), 10-K (filing date: 2014-10-15), 10-K (filing date: 2013-10-16).

The primary reason for the increase in net profit margin ratio over 2018 year is the increase in effect of taxes measured by tax burden ratio.