Directed Services LLC

Exhibit 77(e)(6)

Directed Services LLC

0000 Xxxxxxxx Xxxxx, Xxxx Xxxxxxx, XX 00000

April 1, 2010

ING Partners, Inc.

0000 X. Xxxxxxxxxx Xxxxx Xx.

Xxxxxxxxxx, XX 00000

Ladies and Gentlemen:

Pursuant to the Investment Sub-Advisory Agreement dated March 12, 2002, as amended, between Directed Services LLC and Pacific Management Investment Company LLC, (the “Sub-Advisory Agreement”) the sub-advisory fee for ING PIMCO Total Return Portfolio (the “Portfolio”) was reduced on April 1, 2008.

By our execution of this letter agreement, we hereby notify you of our intention to lower the annual investment management fee for the Portfolio with a corresponding reduction (the “Reduction”) for the period from April 1, 2010 through May 1, 2011.

The Reduction shall be calculated as follows:

Reduction = 50% x (the savings to Directed Services LLC from the April 1, 2008 expense reduction)

Please indicate your agreement to this Reduction by executing below in the place indicated.

Very sincerely,

/s/ Xxxx Xxxxx

Xxxx Xxxxx

Vice President

Directed Services LLC

Agreed and Accepted:

ING Partners, Inc.

(on behalf of the Portfolio)

By:       /s/ Xxxxxxxx X. Xxxxxxxx

Xxxxxxxx X. Xxxxxxxx

Senior Vice President