METHODS OF CALCULATING DEPRCIATION
1. Straight Line Method or Fixed Installment Method.
2. Written Down Value Method or Diminishing Balance Method.
3. Annuity Method.
4. Depreciation Fund Method.
5. Insurance Policy Method.
6. Revaluation Method.
Straightline Method or Fixed Instalment Method or Original Cost Method
Under this method, the same amount of
depreciation is charged every year throughout the life of thee asset. The amount and rate of
depreciation is calculated as under.
1. Amount of
depreciation = Total cost - Scrap value / Estimated life
2. Rate of
depreciation = Amount of
depreciation / Original cost x 100
MERITS:
1. Simplicity: It is every simple and easy to understand.
2. Easy to calculate; It is easy to calculate the amount and rate of
depreciation.
3. Assets can be completely written off: Under this method, the book value of the asset become zero or equal to its scarp value at the expiry of its useful life.
DEMERITS: The amount of
depreciation is same in all the years, although the usefulness of the machine to the business is more in the initial years, although the usefulness of the machine to the business is more in the initial years than in the later years.
Written Down Value Method or Dimnishing Balance Method or Reducing Balance Method
Under this method,
depreciation is charged at a fixed percentage each year on the reducing balance (i.e. cost less
depreciation) goes on decreasing every year.
Merits:
1. Uniform effect on the profit and loss account of different years. The total charge (i.e..
depreciation plus repairs and renewals) remains almost uniform year after year, since in earlier year the amount of depreciation is more and the amount of repairs and renewals is more.
2. Recognized by the income tax authorities: This method is recognized by the income tax authorities.
3. Logical Method: It is a logical method as the
depreciation is calculated on the diminished balance every year.
DEMERITS: It is very difficult to determine the rate by which the value of assets could be written down to Zero.
Annuity Method
The annuity method considers that the business besides loosing the original cost of the asset in terms of
depreciation and also loses interest. On the amount used for buying the asset. This is based on the assumption that the amount invested in the asset would have earned in case the same amount would have been invested in some other form of investment. The annual amount of
depreciation is determined with the help of annuity table.
Depreciation Fund Method or Sinking Fund Method
Under this method, funds are mad available for the replacement of asset at the end of its useful life.th depreciation remains the same year after year and is changed to profit and loss account every year through the creation of
depreciation fund. The aggregate amount of interest and annual provision is invested every year. When the asset is completely written off or is to be replaced, the securities are sold and the amount so realized by selling securities is used to replace the old asset.
Insurance Policy Method
According to this method, an insurance policy is taken for the amount of the asset to be replaced. The amount of the policy is such that it is sufficient to replace the asset when it is worn out. A sum equal to the amount of
depreciation is paid as premium every year. The amount goes on accumulating at a certain rate of interest and is received on maturity. The amount so received is used for the purchase of new asset, replacing the old one.
Revaluation Method
Under this method, the asset like loose tools are revalued at the end of the accounting period and the same is compared with the value of the asset at the beginning of the year. The difference is considered as
depreciation.
Straightline Method or Fixed Instalment Method or Original Cost Method
Under this method, the same amount of
depreciation is charged every year throughout the life of the asset .The amount and rate of
depreciation is calculated as under.
1. Amount of
depreciation = Total cost - Scrap Value / Estimated life
2. Rate of
depreciation = Amount of
depreciation / Original Cost x 100
Merits:
1. Simplicity; It is very simple and easy to understand.
2. Easy to calculate; It is easy to calculate the amount and rate of
depreciation.
3. Assets can be completely written off; Under this method, the book value of the asset become Zero or equal to its scrap value at the expiry of its useful life.
DEMERITS:
The amount of
depreciation is same in all the years, although the usefulness of the machine to the business is more in the initial years than in the later years.
Written Down Value Method or Dimnishing Balance Method or Reducing Balance Method
Under this method,
depreciation is charged at a fixed percentage each year on the reducing balance (i.e., cost less
depreciation) of asset. The amount of
depreciation goes on decreasing every year.
MERITS:
1. Uniform effect on the profit and loss account of different years. The total charge( i.e.…
depreciation plus repairs and renewals) remains almost uniform year after year, since in earlier year the amount of
depreciation is more and the amount of repairs and renewals is less, Whereas in later years the amount of
depreciation is less and the amount of repairs and renewals is more.
2. Recognized by the income tax authorities; this method is recognized by the income tax authorities.
3. Logical Method: It is a logical method as the
depreciation is calculated on the diminished balance every year.
DEMERITS:
It is very difficult to determine the rate by which the value of asset could be written down to zero.