Basis of Presentation:

9 Months Ended

Sep. 30, 2013

Basis of Presentation:

Basis of Presentation:

1. Basis of Presentation: The accompanying Consolidated Financial Statements and footnotes of the International Business Machines Corporation (IBM or the company) have been prepared in accordance with accounting principles generally accepted in the United States of America (GAAP).The financial statements and footnotes are unaudited. In the opinion of the company's management, these statements include all adjustments, which are only of a normal recurring nature, necessary to present a fair statement of the company's results of operations, financial position and cash flows.

The preparation of financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the assets, liabilities, revenue, costs, expenses and accumulated other comprehensive income/(loss) that are reported in the Consolidated Financial Statements and accompanying disclosures. These estimates are based on management’s best knowledge of current events, historical experience, actions that the company may undertake in the future and on various other assumptions that are believed to be reasonable under the circumstances. As a result, actual results may be different from these estimates. See the company's 2012 Annual Report on pages 59 to 61 for a discussion of the company's critical accounting estimates.

Interim results are not necessarily indicative of financial results for a full year. The information included in this Form 10-Q should be read in conjunction with the company's 2012 Annual Report.

Noncontrolling interest amounts in income of $1.8million and $3.0 million, net of tax, for the three months ended September 30, 2013 and 2012, respectively, and $4.2 million and $8.6million, net of tax, for the nine months ended September 30, 2013 and 2012, respectively, are included in the Consolidated Statement of Earnings within the other (income) and expense line item.

Within the financial statements and tables presented, certain columns and rows may not add due to the use of rounded numbers for disclosure purposes. Percentages presented are calculated from the underlying whole-dollar amounts. Certain prior year amounts have been reclassified to conform to the current year presentation. This is annotated where applicable.