(i) Fixed Instalment / Straight Line / Original Cost Method: Under this method, depreciation is charged at a fixed rate at the end of every year during the lifetime of an asset. The formula for depreciation :
Depreciation = Original Cost of asset + Installation Charges – Break-up Value / Scrap Value
(ii) Diminishing Balance / Reducing Balance/ Written Down Value Method : Under this method, depreciation is charged on the opening balance of the asset each year at a given rate.
An amount received when an asset is sold after its useful life is called Scrap Value / Residual Value / Break up Value.
Charges incurred for the erection of the machinery are called Installation Charges / Erection Charges.
ACCOUNTING TREATMENT
1. When any asset is purchased
Asset A/c. Dr.
To Cash / Bank A/c.
2. When depreciation is charged
Depreciation A/c. Dr.
To Asset A/c.
Profit & Loss A/c. Dr.
To Depreciation A/c.
Cash / Bank A/c. Dr.
To Asset A/c.
5. When there is loss on sale of any asset
Profit & Loss A/c. Dr.
To Asset A/c.
When there is profit on sale of asset vice-versa









