The LABAT Tax, a Targeted Levy on High Incomes: Inequality, Well- Being, and the Threat of Capital Flight in Sub-Saharan Africa

In the complex machinery of modern nations, governments face a constant balancing act. They must collect money to fund schools, hospitals, and roads, but they also need to ensure that the people paying the bills do not feel so burdened that they stop working or leave the country entirely. This is the core tension of taxation: finding the point where a government has enough resources to help its citizens without pushing its wealthiest contributors to the breaking point. For decades, economists have debated how to design tax systems that reduce the gap between the rich and the poor while keeping the economy healthy. The question is particularly urgent in Sub-Saharan Africa, where rapid growth has often been accompanied by rising inequality, and where the threat of wealthy individuals moving their money to other countries is a constant reality.

A new study by researchers Streley Paul N'nang Ndong and Stany Wen Ndong Atomodoutoume tackles this problem by looking at a specific type of tax designed to target the very top earners. They call this the LABAT tax, a levy focused on the income, profits, and capital gains of the richest one percent of the population. The researchers wanted to know if such a targeted tax could actually improve the lives of everyone else without causing the wealthy to flee. To find the answer, they did not just look at numbers; they built a theoretical model of how a government, the wealthy, and the rest of the population interact. They imagined a game where the government first tries to tax everyone, realizes this causes unrest among the poor, and then shifts the entire burden onto the rich. The researchers then tested this idea using real data from twenty Sub-Saharan African countries over a ten-year period, from 2011 to 2021.

The study reveals a precise tipping point where this strategy works best. The researchers found that the wealthy in these countries have a natural limit to how much tax they are willing to accept before they start to feel that the cost is too high. This spontaneous limit sits at a tax level of 32 percent. If the government asks for more than this, the wealthy feel the burden is unfair and begin to consider moving their assets elsewhere. However, the study discovered that the wealthy are willing to go a bit further than this initial limit if they believe the money will be used to keep the country stable. When the government promises to use the tax revenue to improve life for the poor and maintain social order, the wealthy's tolerance rises. They are willing to accept a tax level of up to 36.4 percent.

This gap of 4.4 percentage points is the key finding of the research. It represents a "bargaining margin" where the wealthy agree to pay more than they strictly have to, in exchange for the peace and stability that comes from a fairer society. The researchers call the 36.4 percent level the "optimal" tax point. Below this number, raising taxes helps the country by funding public services and reducing inequality. Above this number, the benefits disappear because the wealthy begin to leave or hide their money, which hurts the economy. The study shows that this 36.4 percent threshold is not a random guess; it is a stable number that holds true even when the researchers tested their data using different mathematical methods.

The researchers also looked at how open a country's economy is to the rest of the world. They found that in countries where it is very easy to move money across borders, the wealthy are less willing to tolerate high taxes. In these open economies, the tolerance threshold drops significantly, falling to around 29 percent. This confirms the central idea of their model: the threat of capital flight is real and powerful. If a government tries to tax the rich too heavily in a country where money can easily leave, the wealthy will simply take their wealth elsewhere, leaving the government with less money and a poorer population.

The data used in the study paints a clear picture of what has happened in these African nations over the last decade. During periods of economic boom, such as when oil and mineral prices were high, the wealthy saw their incomes rise sharply while the rest of the population saw little improvement. When the global economy crashed and prices fell, the wealthy were able to protect their assets better than ordinary people, who faced job losses and rising costs. This divergence showed that without a mechanism to redistribute wealth, economic shocks hit the poor the hardest. The study suggests that a targeted tax on the rich, kept within the 36.4 percent limit, could help smooth out these rough patches. By collecting more from those who have the most, the government can fund programs that support the vulnerable, which in turn reduces the social tension that often leads to instability.

The researchers emphasize that this 36.4 percent figure is not a magic number to be applied blindly to every country. It is a benchmark that shows the general range where a tax on the rich can work. For the system to succeed, the government must be trusted to actually use the money for the public good. If the wealthy believe the money will be stolen or wasted, they will not agree to pay the extra amount. The study concludes that the best path forward is a transparent agreement between the state and its wealthiest citizens. The state gets the resources it needs to build a better society, and the wealthy get a stable environment where their investments are safe. This balance, the researchers argue, is the only way to reduce inequality without triggering the very capital flight that would destroy the economy.