Party City Holdco (PRTYQ) 10-Q 2017 Q3 Quarterly report

Exhibit 32.2

CERTIFICATION PURSUANT TO

18 U.S.C.SECTION 1350

AS ADOPTED PURSUANT TO

SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

In connection with the Quarterly Report of Party City Holdco Inc. (the “Company”) on Form10-Q for the quarter ended September 30, 2017, as filed with the Securities and Exchange Commission (the “Report”), I, Daniel J. Sullivan, Chief Financial Officer of the Company, certify, pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, that:

(1) the Report fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934; and

(2) the information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company.

/s/ Daniel J. Sullivan

Daniel J. Sullivan

Chief Financial Officer

(Principal Financial Officer)

Date:November 9, 2017

This certification accompanies the Form10-Q to which it relates, is not deemed filed with the Securities and Exchange Commission and is not to be incorporated by reference into any filing of Party City Holdco Inc. under the Securities Act of 1933, as amended, or the Securities Exchange Act of 1934, as amended (whether made before or after the date of the Form10-Q), irrespective of any general incorporation language contained in such filing.