Depreciation refers to the value erosion of the fixed assets like  building, vehicles and other machineries used in the business or in an  industry.As per the international practice  in vogue a particular percentage is allowed every year  against the depreciation. The percentage ranges from 10% to 25% depending upon the type of the asset.Fixed percentage of deduction on th e asset value  or written down vale  based percentage is also practiced in various countries.Over a period of time though the asset is under use the book value after accounting the depreciation  becomes  nil making the asset worthless in terms of value.his is used  to adjust the tax liability also by the companies to show better profit in their balance sheet.Few  companies  o in for frequent change of the machineries and vehicles  in order to gain better depreciation  to  avoid the tax liability.

Unemployment world over is creating social unrest which is to be arrested at any cost. With the growing population and the rising literacy level, the people in waiting to grab a job is increasing day by day .In a developed country like the United States of America also the unemployment rate has slowly reached a level of about 5.5 % which is very much on the higher side for an economy of that size.In developing countries also the rate is on the rise .When the economy is growing at a slower phase the unemployment rate too increases rapidly .Though every government is trying to keep the level of unemployment at a minimum level the dramatic increase in the youth population over takes the speed at which the employment is generated.Self employment opportunities are also to be created by proper training to the rural youths to involve themselves in the nation building.

Infrastructure development is gaining momentum in the entire part of the globe.Sky rise building to accommodates the growing population is also covered  under this sector of development.Roads  for transportation has become a must in view of the increased need to mobilize both men and materials.Many economies are suffering  set backs in their development activities due to insufficient infrastructure development.Realizing the need for infrastructure development many financial institutions are entering in to the funding for these sector in a very big manner.This sector offers the requisite security for the fund given, apart from the chance to deploy the surplus funds at the disposal of the banks.The yield from this sector is also enormous.

Non banking financial companies are the entities that are involved in the financial activities. They are permitted  to take the deposits from the public and they can also permitted to lend.Central bank in a country stipulates certain regulations  for such companies to operate.Share holders are given with the profit at a proportions per their investment ratio.Many banks are also becoming stake holders in such companies to gain entry in to the rural markets.
NBFCs are mainly involved in the field of personal loans and vehicle financing.Hire purchase financing is also entertained by the non banking financial companies extensively.In the developing countries many  such  companies are established to cater to the need of needy people who are kept away form the banking sector. In most of the countries  major chunk of the population is not made available with the services of the banking sector.In such a condition NBFCs come to their rescue.

Overdraft facility is type of credit limit extended by the banks. It is in the form of running account. Normally it is sanctioned to the business people. Individuals also go in for it against the proper security .Daily transactions are also allowed in this account with out any additional charges. Overdraft account is charged with he rate of interest based o the nature of the facility . If the same is secured overdraft against tangible securities then the rate of interest is on the lower side . Where as in the case of clean overdrafts the rate is o the higher side.