In an earlier blog post, we commented on the sources of corruption, the factors that have  turned it into a powerful obstacle to sustainable economic development.  We noted that the presence of dysfunctional and onerous regulations and  poorly formulated policies, often created incentives for individuals  and businesses to short-circuit them through the paying of bribes. We  now turn to the consequences of corruption, to better understand why it  is a destroyer of human prosperity.
First, corruption undermines government revenue and, therefore, limits  the ability of the government to invest in productivity-enhancing areas.  Where corruption is endemic, individuals will view paying taxes as a  questionable business proposition. There is a delicate tension between  the government in its role as tax collector and the business community  and individuals as tax payers. The system works reasonably well when  those who pay taxes feel that there is a good chance that they will see a  future payoff, such as improvements in the country’s infrastructure,  better schools and a better-trained and healthier workforce. Corruption  sabotages this implicit contract. When corruption is allowed to flourish  taxpayers will feel justified in finding creative ways to avoid paying  taxes or, worse, become bribers themselves.
To the extent that corruption undermines revenue, it adversely  affects government efforts to reduce poverty. Money that leaks out of  the budget because of corruption will not be available to lighten the  burden of the poor. Of course, corruption also undermines the case of  those who argue that foreign aid can be an important element of the  fight against global poverty—why should taxpayers in the richer  countries be asked to support the lavish lifestyles of the kleptocrats  in corrupt states?
Second, corruption distorts the decision-making connected with public investment projects (Tanzi and Davoodi, 1997).  Large capital projects provide tempting opportunities for corruption.  Governments will often undertake projects of a larger scope or  complexity than warranted by the needs of the country. Public investment  will thus be higher—the world is littered with the skeletons of white  elephants, often built with external credits, and representing a heavy  burden on meager budgets. In the context of scarce resources,  governments will find it necessary to cut spending elsewhere, sometimes  in socially vital areas, or in operations and maintenance. Tanzi (1998)  plausibly argues that corruption will also reduce expenditure on health  and education because these are areas where it may be more difficult to  collect bribes, though some  have argued that provider absenteeism, a serious problem in the  educational and health sectors of many countries, is itself a form of  “quiet/silent corruption.”
Third, there is solid empirical evidence that the higher the level of  corruption in a country, the larger the share of its economic activity  that will go underground, beyond the reach of the tax authorities.  Not  surprisingly, studies have shown that corruption also undermines foreign  direct investment since it acts in ways that are indistinguishable from  a tax; other things being equal, investors will always prefer to  establish themselves in less corrupt countries. Wei (2000)  reviewed FDI data from 14 source countries to 45 host countries, and  concluded that: “an increase in the corruption level from that of  Singapore to that of Mexico is equivalent to raising the tax rate by  21-24 percentage points.”
Fourth, corruption discourages private-sector development and  innovation and encourages inefficiency. Budding entrepreneurs with  bright ideas will be intimidated by the bureaucratic obstacles,  financial costs and psychological burdens of starting new business  ventures and will either opt for taking their ideas to some other less  corrupt country or, more likely, desist altogether. In either case,  economic growth is adversely affected. The high incidence of corruption  will mean an additional financial burden on businesses, undermining  their international competitiveness. Unlike a tax, which is known and  predictable and can be built into the cost structure of the enterprise  in an orderly fashion, bribes are unpredictable and will complicate cost  control, reduce profits and undermine the efficiency of those who must  pay them to stay in business. Mauro (1995)  used some indices of corruption and institutional efficiency to show  that corruption lowers investment and, hence, economic growth.
Fifth, corruption contributes to a misallocation of human resources.  To sustain a system of corruption, officials and those who pay them will  have to invest time and effort in the development of certain skills,  nurture certain relationships, and build up a range of supporting  institutions and opaque systems, such as off-the-books transactions,  secret bank accounts, and the like. Surveys have shown that the greater  the incidence of corruption in the country, the greater the share of  time that management has to allocate to dealing with ensuring compliance  with regulations, avoiding penalties, and dealing with the bribery  system that underpins them, activities that draw attention and resources  away from production, strategic planning, and so on.
Sixth, corruption has disturbing distributional implications.  Empirical work shows that corruption actually contributes to worsening  income distribution. Gupta, Davoodi and Alonso-Terme (1998)  have shown that corruption, by lowering economic growth, perceptibly  pushes up income inequality. It also distorts the tax system because the  wealthy and powerful are able to use their connections to make sure  that the tax system works in their favor. It leads to inefficient  targeting of social programs, many of which will acquire regressive  features, with benefits disproportionately allocated to the higher  income brackets; e.g., gasoline subsidies to the car-owning middle  classes in India.
Seventh, corruption creates uncertainty. There are no enforceable  property rights emanating from a transaction involving bribery. The firm  that obtains a concession from a bureaucrat as a result of bribery  cannot know with certainty how long the benefit will last. The terms of  the “contract” may have to be constantly renegotiated to extend the life  of the benefit or to prevent its collapse. Indeed, the briber, having  flouted the law, may fall prey to extortion from which it may prove  difficult to extricate himself. In an uncertain environment with  insecure property rights, the firm will be less willing to invest and to  plan for the longer-term.  A short-term focus to maximize short-term  profits will be the optimal strategy, even if this leads to  deforestation, say, or the rapid exhaustion of non-renewable resources.
This uncertainty is partly responsible for a perversion in the sorts  of incentives that prompt individuals to want to seek public office.  Where corruption is rife, politicians will want to remain in office as  long as possible, not because they are even remotely serving the public  good, but merely because they will not want to yield to others the  pecuniary benefits of high office. Where long stays in office are no  longer an option, then the new government will want to steal as much as  possible as quickly as possible, given a relatively short window of  opportunity.
Eighth, because corruption is a betrayal of trust, it diminishes the  legitimacy of the state and moral stature of the bureaucracy in the eyes  of the population. While efforts will be made to shroud such corrupt  transactions in secrecy, particularly when the opportunities for bribery  are linked to some government-inspired initiative, the relevant details  will leak out and will tarnish the reputation of the government,  thereby damaging its credibility and limiting its ability to become a  constructive agent of change. Corrupt governments will have a tougher  time being credible enforcers of contracts and protectors of property  rights.
Ninth, bribery and corruption lead to other forms of crime. Because  corruption breeds corruption, it tends soon enough to lead to the  creation of mafias and organized criminal groups who use their financial  power to infiltrate legal businesses, to intimidate, to create  protection rackets and a climate of fear and uncertainty. In states with  weak institutions, the police may be overwhelmed, reducing the  probability that criminals will be caught. This, in turn, encourages  more people to become corrupt, further impairing the efficiency of law  enforcement, a vicious cycle that will affect the investment climate in  noxious ways, further undermining economic growth. In many countries, as  corruption gives rise to mafias and organized crime, the police and  other organs of the state may themselves become criminalized. By then,  businesses will not only have to deal with corruption-ridden  bureaucracies, but they will also be vulnerable to attacks from  competitors who will pay the police or tax inspectors to harass and  intimidate.
There is really no limit to the extent to which corruption, once it  is unleashed, can undermine the stability of the state and organized  society. Tax inspectors will extort businesses; the police will kidnap  innocents and demand ransom; the prime minister will demand payoffs to  make himself available for meetings; aid money will disappear into the  private offshore bank accounts of senior officials; the head of state  will demand that particular taxes be credited directly to his personal  account. Investment will come to a standstill, or, worse, capital flight  will lead to disinvestment. In countries where corruption becomes  intertwined with domestic politics, separate centers of power will  emerge to rival the power of the state. At that point, the chances that  the government will actually be able to do anything to control  corruption will disappear and the state will mutate into a kleptocracy,  the eighth circle of hell in Dante’s Divine Comedy.
Alternatively, the state, to preserve its power, may opt for warfare,  engulfing the country in a cycle of violence. In any case, corrupt  failed, or failing, states become a security threat for the whole  international community, “because they are incubators of terrorism, the  narcotics trade, money laundering, human trafficking, and other global  crime—raising issues far beyond corruption itself” (Heineman and Heimann 2006).