Amazon released financial results for its first quarter ended March 31, 2013. Amazon’s operating income decreased 6% to $181 million in the first quarter, compared with $192 million in first quarter 2012.

Net income decreased 37% to $82 million in the first quarter, or 18 cents per diluted share, compared with $130 million, or 28 cents per diluted share, in first quarter 2012.

Free cash flow decreased 85% to $177 million for the trailing twelve months, compared with $1.15 billion for the trailing twelve months ended March 31, 2012. Free cash flow for the trailing twelve months ended March 31, 2013 includes fourth quarter 2012 cash outflows for purchases of corporate office space and property in Seattle, Washington, of $1.4 billion.

Amazon Second Quarter 2013 Guidance 

Net sales are expected to be between $14.5 billion and $16.2 billion, or to grow between 13% and 26% compared with second quarter 2012.

Operating income (loss) is expected to be between $(340) million and $10 million, compared to $107 million in the comparable prior year period.