Google Inc. reported consolidated revenues of $14.89 billion for the quarter ended September 30, 2013, an increase of 12% compared to the third quarter of 2012. Google Inc. reports advertising revenues, consistent with GAAP, on a gross basis without deducting traffic acquisition costs (TAC). In the third quarter of 2013, TAC totaled $2.97 billion, or 24% of advertising revenues.
Operating income, operating margin, net income, and earnings per share (EPS) are reported on a GAAP and non-GAAP basis. The non-GAAP measures, as well as free cash flow, an alternative non-GAAP measure of liquidity, are described below and are reconciled to the corresponding GAAP measures at the end of this release.
Source: Google Press Release