Reactions to taxes do not always come from formulas. They come from perception. This is the shift that is quietly changing how we talk about tax policy. Raising rates no longer guarantees a predictable outcome. What matters is how people see and feel the tax. For a long time, models focused on marginal rates. But in real life, people follow a different logic. They look at the final amount. At how much money actually leaves their pocket. And that is what changes the tax base.
There is a fact that is hard to ignore. A one percentage point increase in the average tax burden can reduce reported income by around two and a half percent. This is not about working more or less. It is about how the burden feels. When a tax becomes noticeable, behavior changes. Not always by reducing work. More often by changing how income is structured.
Economics has long treated the marginal rate as the main signal. It shows how much someone keeps from the last dollar earned. Most models are built on this idea. But it only works if people actually think that way. If they evaluate every extra effort through marginal gains. In reality, that is rare.
Most people focus on something simpler. How much is left after taxes. How much went to the government. It is an easy metric. No need to understand the system in detail. That is where decisions are made. When that number changes sharply, people react. Here is the key difference. The marginal rate shapes incentives. The average burden shapes perception. Ignore the second, and the picture is incomplete.
When rates go up for higher incomes, the percentage change looks the same for everyone in that bracket. But in money terms, the effect is very different. The higher the income, the larger the tax bill. That makes the change more visible. And it triggers a stronger reaction. This leads to a common observation. High earners react more. But it is not necessarily because they are more flexible or better at adapting. It is because the change looks bigger to them. It hits their perception harder.
If we break behavior down, two channels appear. The first is changes in work. The second is changes in reporting. In standard models, the first dominates. In reality, the second is often more important.
A higher tax burden does not automatically reduce work. It leads people to look for alternatives. They shift income across time. Use deductions. Change how they receive income. The income does not disappear. It moves. That is why a drop in reported income does not always mean less economic activity. It often means a change in how that activity shows up in the tax base.
When visibility becomes strong, a paradox appears. Tax increases can look like high sensitivity to rates. But in fact, it is a reaction to the level of the burden. These are not the same thing. For a long time, this gap was hidden in the data. Income elasticity was treated as a response to incentives. But part of it reflects perception. Once you separate that piece, the picture changes.
Differences between income groups become smaller. High earners are still more responsive. But not as much as previously thought. This weakens the idea that higher taxes on top incomes will inevitably destroy the tax base. In practice, this matters. Decisions on tax rates are based on expected revenue losses. If those losses are overstated, policy becomes too cautious. The room to act is smaller than it actually is. Another key factor is the structure of the tax system. Thresholds matter as much as rates. They define where the burden jumps. And how visible that jump is.
If thresholds are low, more people face sharp increases in taxes. This amplifies visibility. If thresholds are high, fewer people are affected. And the reaction is different. Even with the same rate, outcomes can vary. It depends on how the burden is distributed. And how it feels. This opens a new way to design tax policy. Not only through rates, but through structure. Through design. Through how the tax shows up in a person’s income.
For countries with transition or mixed economies, this is especially relevant. Kazakhstan is no exception. The debate here often focuses on rates. Raise or not raise. But the real response from businesses and households depends on perception. If the tax burden rises sharply and becomes visible, reactions intensify. Even if the formal change is small. If the increase is gradual, the effect may be weaker, even if the total amount is the same.
This means the discussion has to shift. From rates to perception. How the tax looks to people. Where the jump happens. How the burden is spread over time. There is also the issue of trust. When taxes feel fair and predictable, reactions are softer. When changes are sudden and unclear, visibility becomes stronger. Even without trust, the basic mechanism holds. People react to the amount they pay. And that shapes behavior.
At a time when budgets are under pressure, getting the tax base right is critical. A small error can cost billions. If behavioral factors are ignored, the error becomes systematic. The challenge is that visibility is hard to observe directly. It shows up through changes in reported income. Through reporting patterns. But it can be isolated when tax structures vary.
When the same rate leads to different burdens, it becomes possible to separate incentives from perception. And to see what drives behavior. The result is uncomfortable for standard thinking. People respond less to formulas and more to how those formulas play out in real life. This changes how analysis should be done. Simple models are no longer enough. Behavioral factors need to be built in.
For journalists, this is an opportunity. Taxes are no longer just technical. There is a human layer. Perception. Reaction. It makes the topic more alive. For policymakers, it calls for caution. A strong response does not always mean high sensitivity to rates. It may simply reflect high visibility. This difference may seem subtle. But the consequences are large. It affects reform design. Budget expectations. Risk assessment.
If this factor is ignored, mistakes will accumulate. They are already embedded in some estimates. And they continue to shape decisions. On the other hand, accounting for visibility offers a new tool. It allows for more precise design. It makes it possible to manage reactions not only through incentives, but through perception.
This does not replace standard economics. It adds another layer. And makes analysis more realistic. The question is no longer how to change the rate. The question is how that change will look to the taxpayer. In this sense, tax policy is not just about numbers. It is about behavior. And about how those numbers are perceived.
Lina Yegil kizi, expert of the portal EconomyKZ.org
