Answer:
1 and a half months worth of depreciation
Explanation:
The advantage of starting to depreciate an asset purchased on December is that next year you will be able to depreciate it for a full year under MACRS. Generally, when you purchase an asset, you have to use the half year convention and your depreciation expense for the first year will be low compared to the second year. But if you start depreciating your asset in the current year, even if you purchased it on December and the depreciation expense is not that significant, the next year you will be able to depreciate it at the second year rate.