Acting IRS Commissioner Kevin Brown told Tax Talk Today viewers that the IRS has made significant progress in recent years in terms of enforcement:

Overall revenues are up approximately $13 billion over the past four years.

Individual examinations are up about 75% since 2001.

Fiscal year 2006 saw 52,000 business audits, and audits of large corporations with assets of more than $250 million are up 30% over the past five years.

On all cases brought by IRS criminal investigators, the conviction rate is 92%.

The IRS expects to focus on key noncompliance categories–such as small businesses and self-employed individuals–identified in the National Research Program (NRP)–in an ongoing effort to improve taxpayer compliance and reduce the tax gap. In addition, the IRS recently announced that it will launch a new NRP reporting compliance study for individual taxpayers using a multi-year, rolling methodology.