Depreciation (or sinking) fund method. One of the objectives of providing for depreciation (as explained earlier) is to provide for replacement of the assetat the end of its useful life. In case of the three methods discussed earlier, the amount of depreciation charged from the Profit & Loss Account continues to remain in the business. However, this amount may get invested in the course or running the business is some other assets. It may, therefore, not be possible for the business to have sufficient liquid resources to purchase a new asset at the time when it needs funds for replacement. Depreciation Fund Method takes care of such a contingency. According to this method, the amount charged by way of depreciation is invested in certain securities carrying a particular rate of interest. The amount received on account of interest from these securities is also invested from time to time together with the annual amount charged by way of depreciation. At the end of the useful life of the asset, when replacement is required, the securities are sold away and money realised on account the sale of the securities is used for purchase of a hew asset. The method has the advantage of providing a separate sum for replacement of the asset. However, the methodhas a disadvantage. It puts an increasing burden on the profit and loss of each year on account of a fixed charge for depreciation but increasing charge for repairs.