Final answer:
The mid-quarter convention under MACRS calculates depreciation as if property was placed in service in the middle of the quarter of acquisition, applied to property placed in service in the last quarter of the year.
Step-by-step explanation:
The mid-quarter convention under the Modified Accelerated Cost Recovery System (MACRS) is a depreciation method in which depreciation of property is calculated as if the property was placed in service in the middle of the quarter of acquisition. Option d is correct: Any property placed into service in the last 3 months of the tax year (the mid-quarter) is depreciated using this convention.
This means regardless of the specific month within the last quarter (October, November, or December), depreciation starts from the middle of that quarter. The purpose of the mid-quarter convention is to prevent taxpayers from claiming a disproportionate amount of depreciation in the first year for property placed in service at the end of the tax year.