The Internal Revenue Service has issued guidance that gives large business taxpayers some insight into which parts of their tax filings will get the greatest scrutiny going forward.

The IRS’s Large Business and International Division has identified 13 “campaigns,” or issues it will target in examinations, in the coming year. The division is moving toward “issue-based examinations,” the IRS says, developing a compliance campaign process where compliance issues that present the greatest risk get priority attention, making the most efficient use of examination resources.