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We consent to incorporation by reference in the Registration Statements on Form S-3 (File No. 333-181134), Form S-4 (File No. 333-185074) and Forms S-8 (File Nos. 333-71830, 333-72772, 333-73038, 333-66472, 333-97995, 333-107479, 333-107480, 333-127098, 333-139956, 333-150956 and 333-168332) of NBT Bancorp Inc. of our reports dated March 1, 2013, with respect to the consolidated balance sheets of NBT Bancorp Inc. and subsidiaries as of December 31, 2012 and 2011, and the related consolidated statements of income, comprehensive income, changes in stockholders' equity and cash flows for each of the years in the three-year period ended December 31, 2012, and the effectiveness of internal control over financial reporting as of December 31, 2012, which reports appear in the December 31, 2012 annual report on Form 10-K of NBT Bancorp Inc.