How to calculate double declining balance for store equipment that costs $134,500 with residual of $18,000 and life of 10 years? If the equipment was purchased Feb, 10,2013 the question states that by December 31,2014 the accumulated depreciated balance should be at $46,627. I'm looking for the depreciation expense for January 2015, and accumulated depreciation balance for January 31st, 2015.