Installation goods refers to equipment or facilities such as buildings, cranes, manufacturing equipment, or heavy construction machinery. These goods fall into the category of capital goods because they require a large upfront investment, and are items that have a usefulness exceeding one year. As a result, if you are a business owner, you typically cannot write off the entire cost of installation goods in the year of purchase. Instead, you must write off these items incrementally over a period of years, as their value depreciates. Although there are some exceptions, most notably for movable machinery, installation goods tend to be permanently installed fixtures.