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We consent to the incorporation by reference in the registration statement (No. 333-168460, 333-167691, 333-167007, 333-116511, 333-128764, 333-134685, 333-134686, 333-159245, 333-113327, 333-74420, 333-74106, 333-199115, 333-195664 and 333-228554) on Form S-8 of Boston Private Financial Holdings, Inc. of our reports dated March 1, 2021 with respect to the consolidated balance sheets of Boston Private Financial Holdings, Inc. and subsidiaries as of December 31, 2020 and 2019, the related consolidated statements of operations, comprehensive income, changes in shareholders’ equity, and cash flows for each of the years in the three-year period ended December 31, 2020, and the related notes, and the effectiveness of internal control over financial reporting as of December 31, 2020, which reports appear in the December 31, 2020 annual report on Form 10-K of Boston Private Financial Holdings, Inc.