ST. PAUL — The Minnesota Department of Revenue is advising businesses and others about changes to the state sales tax that legislators approved last month.

The agency planned to release details today meant to clear up confusion about new exemptions and newly imposed taxes. An array of sales tax changes was adopted as part of the state budget. Most take effect on July 1.

A limited set of services will be subject to the state sales tax for the first time, mainly business-to-business transactions. They include transactions related to automotive repair and on cable and satellite TV service.

An agency briefing won’t provide new details on tax changes not slated to kick in until 2014, including a controversial tax on business warehousing.