Entry of depreciation must be done by accountant .This is so easy but it must be select journal voucher . Calculate correct amount of depreciation because it is on fixed asset so be careful of total buy and sell of same fixed asset . If any asset buy before the end of half year , it will be charged full depreciation of year but if any fixed asset has bought after half year then depreciation will be charged on fixed asset only half of total. For this purpose any table which showing the detail of opening balance , buying ,selling and closing balance of fixed asset can be made in excel sheet .It will be helpful for passing depreciation entry . Because you are accountant you know very well what rules and regulation apply on entry passing .Same procedure of passing of entry will apply on tally 9.2