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UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 8-K

CURRENT REPORT

Pursuant to Section 13 or 15(d)

of The Securities Exchange Act of 1934

Date of Report (Date of earliest event reported): May 14, 2015

THE DUN & BRADSTREET CORPORATION

(Exact name of registrant as specified in its charter)

Registrant’s telephone number, including area code: (973) 921-5500

(Former name or former address, if changed since last report)

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:

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Amendment No. 1 to Credit Agreement

On May 14, 2015, The Dun & Bradstreet Corporation (the “Company”) entered into Amendment No. 1 (the “Amendment”) to its Amended and Restated Five-Year Revolving Credit Agreement dated as of July 23, 2014 with JPMorgan Chase Bank, N.A., as Administrative Agent, The Bank of Tokyo-Mitsubishi UFJ, Ltd. and RBS Citizens, N.A. as Co-Syndication Agents, and Bank of America, N.A., Barclays Bank PLC and HSBC Bank USA, N.A., as Co-Documentation Agents, and the banks that are lenders under the facility (the “Revolving Credit Facility”). The Amendment modifies the total debt to EBITDA ratio in the Revolving Credit Facility from 4.0 to 1.0 to 4.5 to 1.0 for any fiscal quarter that ends before December 31, 2016. For fiscal quarters ending on or after December 31, 2016, the total debt to EBITDA ratio will return to 4.0 to 1.0.

Term Loan Credit Agreement

On May 14, 2015, the Company entered into a term loan credit agreement with JPMorgan Chase Bank, N.A., as Administrative Agent, The Bank of Tokyo-Mitsubishi UFJ, Ltd., as Syndication Agent, and Bank of America, N.A., Barclays Bank PLC, Citizens Bank, N.A., HSBC Bank USA, N.A. and TD Bank, N.A. as Co-Documentation Agents, and the banks that are lenders under the facility (the “Term Loan Facility”). The Company has $400,000,000 of aggregate availability under the Term Loan Facility. Up to two drawdowns are permitted under the Term Loan Facility, and each drawdown must occur on or before November 15, 2015. All borrowings will be at the then prevailing short-term interest rates. The Term Loan Facility matures five years after the initial funding and requires the maintenance of interest coverage and total debt to EBITDA ratios similar to those required under the Revolving Credit Facility, as amended by the Amendment. The Term Loan Facility may be used for the repayment of debt or other general corporate purposes. Amounts repaid under the Term Loan Facility may not be reborrowed.

The discussion under Item 1.01 is incorporated by reference herein.

(d) Exhibits

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SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.

DATE: May 14, 2015

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