WASHINGTON: The Internal Revenue Service is seeking an agency to help it with PR, advertising, and marketing projects, including a campaign to encourage voluntary tax compliance. The five-year contract has a total budget of $15 million.

Proposals were due January 30, and oral presentations are taking place this week. The IRS expects to pick a firm by April, a contracting officer at the federal agency said.

Firms in the running include Ogilvy PR Worldwide, Porter Novelli, and Weber Shandwick. Porter ...