Most people assume income tax is the biggest source of government revenue.
It isn’t.
Across countries, indirect taxes (consumption taxes) are often the largest:
- G7 → ~9% of GDP
- BRICS → ~11.2% of GDP (highest)
- Conduit economies → ~5.5% of GDP
Even in countries with high income taxes, governments still rely heavily on taxing behavior.
Why?
Because:
- Consumption is constant
- Behavior is easier to track
- Revenue is more predictable
But there’s a catch.
When consumption taxes go too high (like in BRICS), they:
- Increase cost of living
- Reduce affordability
- Create inequality in access
Conclusion:
The most stable tax base globally is not income—it is behavior.
Reflection:
Should governments rely more on consumption taxes, or redesign them more intelligently?