The Plant Rehabilitation and Industrial Development Districts Act, (known as the Industrial Facilities Exemption) PA 198 of 1974, as amended, provides a tax incentive to manufacturers to enable renovation and expansion of aging facilities, assist in the building of new facilities, and to promote the establishment of high tech facilities. An Industrial Development District (IDD) or a Plant Rehabilitation District (PRD) must be created prior to initiating a project so it is essential that you consult your local assessor before commencing a project. An Industrial Facilities Exemption (IFE) certificate entitles the facility to exemption from ad valorem real and/or personal property taxes for a term of 1-12 years as determined by the local unit of government. Applications are filed, reviewed and approved by the local unit of government, but are also subject to review at the State level by the Property Services Division and the Michigan Economic Development Corporation. The State Tax Commission (STC) is ultimately responsible for final approval and issuance of certificates. Exemptions are not effective until approved by the STC.