Consent of Independent Registered Public Accounting Firm

We hereby consent to the incorporation by reference into the Prospectuses and Statements of Additional Information in Post-Effective Amendment No. 11 to the Registration Statement on Form N-1A of Fidelity Merrimack Street Trust: Fidelity Corporate Bond ETF, Fidelity Limited Term Bond ETF, Fidelity Low Duration Bond Factor ETF and Fidelity Total Bond ETF of our reports dated October 25, 2018 relating to the financial statements and financial highlights included in the August 31, 2018 Annual Reports to Shareholders of the above referenced funds which are also incorporated by reference into the Registration Statement.

We also consent to the references to our Firm under the headings “Financial Highlights” in the Prospectuses and “Independent Registered Public Accounting Firm” in the Statements of Additional Information.  

/s/PricewaterhouseCoopers LLP Boston, Massachusetts
December 21, 2018