The Internal Revenue Service has begun a charm offensive to help defuse tensions about its new plans to require corporations to disclose uncertain tax positions as part of their tax returns.

Speaking at an April 23 Webcast hosted by PricewaterhouseCoopers, IRS Chief Counsel William Wilkins tried to assuage fears that the agency will use those disclosures as a roadmap to audit corporations and increase their tax bill. He also walked listeners through the proposed rule and how companies can comply with it as easily as possible.

He began by saying the logic behind the rule is to expedite the audit and examination ...