Exhibit 99.1

Subsequent to our October 23, 2013 filing on Form 8-K furnishing our third-quarter 2013 earnings release, we made a correction to the purchase price allocation related to our December 28, 2012 acquisition of certain credit services business assets and operations of CSC Credit Services Inc. (CSC Credit Services Acquisition), which had the effect of increasing amortizable acquisition-related intangible assets and reducing non-amortizable acquisition-related intangible assets. As a result of the adjustments made to our Consolidated Balance Sheet, additional amortization expense of $7.7 million ($4.8 million, net of tax) was recorded in the third quarter of 2013, to adjust the year-to-date amortization expense to an amount consistent with the amortizing of the adjusted purchased intangible assets since the date of the CSC Credit Services Acquisition. The following table reconciles certain balances from the Consolidated Statements of Income in the Form 8-K filed on October 23, 2013 to the corresponding balances in the Form 10-Q filed on November 6, 2013. The adjustment had no impact to cash provided by operating activities or, on a non-GAAP basis, to adjusted EPS attributable to Equifax, excluding the impact of acquisition-related amortization expense, net of associated tax impacts. A reconciliation of these non-GAAP financial measures to the most directly comparable GAAP financial measures is also included below.

Reconciliations of Non-GAAP Financial Measures to the Comparable GAAP Financial Measures (Unaudited)

(Dollars in millions, except per share amounts)

Reconciliation of net income from continuing operations attributable to Equifax to diluted EPS from continuing

operations attributable to Equifax, adjusted for acquisition-related amortization expense:

Diluted EPS and net income from continuing operations attributable to Equifax, adjusted for acquisition-related amortization expense, net of tax - We calculate this financial measure by excluding the impact of acquisition-related amortization expense and including a benefit to reflect the material cash income tax savings resulting from the income tax deductibility of amortization for certain acquired intangibles.  These financial measures are not prepared in conformity with GAAP.  Management believes excluding the impact of amortization expense is useful because excluding acquisition-related amortization, and other items that are not comparable, allows investors to evaluate our performance for different periods on a more comparable basis. Certain acquired intangibles result in material cash income tax savings which are not reflected in earnings. Management believes that including a benefit to reflect the cash income tax savings is useful as it allows investors to better evaluate Equifax. Management makes these adjustments to earnings when measuring operating profitability, evaluating performance trends, setting performance objectives and calculating our return on invested capital.