CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM
We consent to the incorporation by reference in Registration Statement No. 333-122934 on Form S-8
of our report dated February 25, 2010 relating to the consolidated financial statements of Wright
Express Corporation and the effectiveness of Wright Express Corporations internal control over
financial reporting, appearing in this Annual Report on Form 10-K of Wright Express Corporation for
the year ended December 31, 2009.
/s/ Deloitte & Touche LLP
February 25, 2010