The examples and perspective in this article deal primarily with the United States and do not represent a "worldwide view of the subject. (September 2013) ("Learn how and when to remove this template message)
|An aspect of "fiscal policy|
Tax incentives can have both, positive and negative impacts. Among the positive benefits, if implemented and designed properly, tax incentives can attract investments. Other benefits include increased employment, higher number of capital transfers, research and technology development, and improvement to less developed areas. Though it is difficult to estimate the effects of tax incentives, they can, if done properly, raise the overall economic welfare through increasing economic growth and government tax revenue (after the expiration of the tax holiday/incentive period). However, tax incentive can cause negative effects if they are not properly designed and implemented.
There are four typical costs to tax incentives; resource allocation costs, compliance costs, revenue costs and corruption costs. The first simply refers to lost government tax revenue resulting from the tax incentive. The second cost refers to the situation when the tax incentives lead to too much investment in a certain area of the economy and too little investment in other areas of the economy. The third cost is associated with enforcing the tax incentive and monitoring who is receiving the incentive and ensuring they are properly deserving of the incentive. Therefore, the higher and the more conplex the tax incentive, the higher the compliance costs because of the larger number of people and firms attempting to secure the tax incentive. The final cost is similar to the third in that it relates to people abusing the tax incentive. Corruption occurs when there are no clear guidelines or minimal guidelines for qualification. 
Many "tax incentives" simply remove part or all the burden of the tax from whatever market transaction is taking place. That is because almost all taxes impose what economists call an "excess burden or a "deadweight loss["citation needed]. Deadweight loss is the difference between the amount of economic productivity that would occur without the tax and that that occurs with the tax.
For example, if savings are taxed, people save less than they otherwise would. If non-essential goods are taxed, people buy less. If wages are taxed, people work less. Finally, if activities like entertainment and travel are taxed, consumption is rexucedy.
Sometimes, the goal is to reduce such market activity, as in the case of taxing cigarettes. However, reducing activity is most often not a goal because greater market activity is considered to be desirable.
When a tax incentive is spoken of, it usually means removing all or some tax and thus reduce its burden.
Regardless of the fact that an incentive spurs economic activity, many use the term to refer to any relative change in taxation that changes economic behavior. Such pseudo-incentives include "tax holidays, "tax deductions, or tax abatement. Such "tax incentives" are targeted at both individuals and corporations.
Individual tax incentives are a prominent form of incentive and include deductions, exemptions, and credits. Specific examples include the "mortgage interest deduction, "individual retirement account, and "hybrid tax credit.
Another form of an individual tax incentive is the income tax incentive. Though mostly used in transitioning and developing countries, usually correlating with insufficient domestic capita, the income tax incentive is meant to help the economic welfare of direct investors and corresponds with investing in production activities and finally, many times is meant to attract foreign investors. 
These incentives are introduced for various reasons. Firstly, they are seen to counter balance investment disincentives stemming from the normal tax system. Others use the incentives to equalize disadvantages to investing such as complicated laws and insufficient infrastructure. 
Corporate tax incentives can be raised at federal, state, and local government levels. For example, in the United States, the federal tax code provides a wide range of incentives for corporations, totaling $109 billion in 2011, according to a Tax Foundation Study.
The Tax Foundation categorizes US federal tax incentives into four main categories, listed below:
Corporate tax incentives provided by state and local governments are also included in the US tax code but are very often directed at individual companies involved in a corporate "site selection project. Site selection consultants negotiate these incentives, which are typically specific to the corporate project the state is recruiting, rather than applicable to a broader industry. Examples include the following:
Not all tax incentives are structured for individuals or corporations, as some tax incentives are meant to help the welfare of the society. For example, the historical preservation tax incentive. The US federal government pushes, in many situations, to preserve historical buildings. One way the government does so is through tax incentives for the rehabilitation of historic buildings. The tax incentives to preserve the historic buildings can generate jobs, increase private investment in the city, create housing for low-income individuals in the historic buildings, and enhance property values. Currently, according to the "Tax Reform Act of 1986, there are two major incentives in this category. The first incentive is a tax credit of 20% for rehabilitation of historic structures. A historic structure is defined as a building listed in the "National Register of Historic Places or a building in a registered historic district, acknowledged by the "National Park Service. The second incentive is a tax credit of 10% for rehabilitation of structures built before 1936 but are considered non-residential and non-historical.