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
The undersigned, Michael Gilligan, Principal Financial Officer of DB Commodity Services LLC, the Managing Owner of PowerShares DB US Dollar Index Bearish Fund (the “Fund”), a series of PowerShares DB US Dollar Index Trust, hereby certifies, pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, that:
| (1) | The Fund’s Annual Report on Form 10-K for the year ended December 31, 2008, as filed with the Securities and Exchange Commission on the date hereof (the “Annual Report”), fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934, as amended; and |
| (2) | The information contained in the Annual Report fairly presents, in all material respects, the financial condition and results of operations of the Fund. |
| Date: February 27, 2009 | /s/ Michael Gilligan | |||||||
| Michael Gilligan | ||||||||
| Principal Financial Officer | ||||||||