Business -Requirement What does mid quarter mean? The mid-quarter convention treats all property placed in service (or disposed of) during any quarter as placed in service (or disposed of) on the midpoint of that quarter. Mid-Quarter Convention (USA) There are certain tax laws (mid-quarter convention) in the United States that require you to calculate depreciation on the basis of half-periods. … Continue reading MACRS : Asset Acquisitions(Mid-Quarter-Convention) S_ALR_87012047