Nationwide Fund Advisors 1200 River Road, Suite 1000 Conshohocken, Pennsylvania 19428

EX-23(h)(10)

Nationwide Fund Advisors
0000 Xxxxx Xxxx, Xxxxx 0000
Xxxxxxxxxxxx, Xxxxxxxxxxxx 19428

April 8, 2008

Nationwide Variable Insurance Trust
0000 Xxxxx Xxxx, Xxxxx 000
Xxxxxxxxxxxx, Xxxxxxxxxxxx 19428

     Re:      Xxx Xxxxxx — NVIT Multi-Manager Small Cap Value Fund

Ladies and Gentlemen:

     By our execution of this letter agreement (the “Agreement”), intending to be legally bound hereby, Nationwide Fund Advisors (the “Adviser”) agrees that, with respect to the NVIT Multi-Manager Small Cap Value Fund (the “Fund”), which is a series of Nationwide Variable Insurance Trust, the Adviser shall waive a portion of its management fee in an amount equal to 0.03%, as a percentage of the Fund’s average daily net assets, on a temporary basis, from the period May 1, 2008 until performance of the Fund improves. The Adviser acknowledges that it shall not be entitled to collect on, or make a claim for, waived fees at any time in the future.

	Nationwide Fund Advisors
	By:	/s/ Xxxxxxx X. Xxxxxxx
		Name:	Xxxxxxx X. Xxxxxxx
		Title:	President

Your signature below acknowledges
acceptance of this Agreement:

Nationwide Variable Insurance Trust

By:		/s/ Xxxxx X. Xxxxx
		Name: Xxxxx X. Xxxxx
		Title: Assistant Secretary
		Date: April 8, 2008