A historical and strategic assessment of tariffs and managed trade under the EU-Mercosur framework.
The word tariff comes from the Arabic rancel, referring to a tax or decree imposed by authority upon subjects.
Tariffs, as taxes on imports, have existed for millennia.
Precursors can be traced back to ancient Mesopotamia in the second millennium BC, but the first written evidence of a customs tariff dates to 137 AD in Palmyra, Syria, under the Roman Empire, where it was used for fiscal revenue.
In the fourth century BC, Athens imposed a 2% tax on goods entering the port of Piraeus.
They became widespread under feudal lords who charged transit duties such as bridge tolls and river passage fees.
Powers such as Spain and England used them to finance wars and, under mercantilism, to protect domestic industries.
In the modern era, the United States established tariffs through the Tariff Act of 1789 as a means of protecting textile and iron industries.
There is a paradox in a mechanism allegedly designed to protect national business activity and employment while imposing an additional burden on local consumers, who must pay the prices set by protected oligopolies instead of benefiting from free import competition.
The famous Smoot-Hawley Tariff of 1930 in the United States became a historic example of protectionism whose effects exacerbated the Great Depression.
The outcome of the Uruguay Round of the GATT (General Agreement on Tariffs and Trade) was the commitment of countries to reduce tariffs and “bind” customs duties at levels that would be difficult to raise later.
Current negotiations under the Doha Development Programme continue making largely sterile efforts in that direction, particularly regarding freer access to markets for agricultural and non-agricultural products.
There is near-unanimous consensus among economists that tariffs are counterproductive. They negatively affect economic growth and welfare, whereas free trade and the reduction of trade barriers have positive effects by lowering the cost of raw materials and technology.
Although trade liberalization can generate unevenly distributed short-term losses and gains and may cause temporary disruption for workers in import-competing sectors, free trade offers advantages by reducing the cost of goods and services for both producers and consumers.
The economic burden of tariffs falls on importers, exporters, and consumers.
Frequently designed to protect specific industries, tariffs may backfire and harm the very sectors they were intended to defend, by increasing input costs and provoking retaliatory measures.
By restricting competition, producers tend to form corporations that stagnate modernization and survive through artificial protection that also generates abusive revenue for political systems.
Import tariffs also harm national exporters by disrupting supply chains and increasing production costs.
The Common External Tariff (CET) is a single tariff agreed upon — by “consensus” — by MERCOSUR member states, raising the cost of goods imported from non-member countries.
The official narrative claimed it would unify trade policy, protect local production, and foster internal trade.
It achieved the opposite, with tariff levels reaching up to 20% of the cost of the imported product or service.
This has not only hindered the creation of a genuine common market, but also stagnated regional productivity and paralyzed economic development, except in sectors that structured the agreement to expand their own privileges.
It has made it economically impossible to compete on equal footing outside the bloc and to lower domestic prices.
Analyzing the EU-Mercosur agreement from a free trade perspective implies justifying the marked skepticism with which this specific treaty is received.
It is not pure free trade, but managed trade.
Regulatory Protectionism
Trade should be based on mutual trust and freedom of enterprise.
However, this agreement comes loaded with EU regulations — a form of regulatory imperialism.
The EU requires Mercosur to adapt to its environmental standards under the Green Deal and to its labor regulations.
These non-tariff barriers raise production costs and violate the market sovereignty of South American countries.
Small and medium-sized enterprises in Mercosur lack the capital to certify every process under European standards, which ultimately favors only large corporations that can afford compliance.
Trade Diversion vs Trade Creation
A key liberal principle, based on Jacob Viner, holds that regional agreements can be counterproductive if they generate trade diversion.
By eliminating tariffs only between these two blocs, incentives are created to buy products from the EU or Mercosur that may be more expensive or of lower quality than those from a third country such as the United States, China, or India.
Unilateral opening or global agreements under the WTO are preferable to exclusive clubs that distort prices and global competition, imposing regimented and more expensive consumption.
The Consolidation of the Corporate State
These treaties are drafted by lobbyists and bureaucrats, not by defenders of free trade.
They are detached from genuine equality of conditions, economic growth, or open competition.
Instead of fully liberalizing markets for beef or sugar, the agreement establishes quotas, which by definition constitute centralized planning: the stronger state decides how much may be sold, which is the antithesis of a free market.
The agreement does not eliminate the EU’s Common Agricultural Policy (CAP), which will continue subsidizing European farmers while demanding “competition.”
This is a hypocritical distortion that prevents efficient allocation of resources and technically amounts to dumping.
Intellectual Property Risks
Excessive patent protection is seen as legal monopoly.
The agreement strengthens EU intellectual property rules within Mercosur.
This will raise prices for medicines and technologically produced seeds, limiting competition and local innovation while artificially protecting major European patent holders.
Structural Competitiveness Gap
In Argentina and Brazil especially, opening markets without first reducing domestic tax burdens is seen as a trap.
If the state does not cut public spending and taxes before signing such agreements, local firms compete with a heavy burden against European companies that enjoy better infrastructure, lower taxation, and lower capital costs.
This is not real competition, but rather a sentence to industrial closure due to structural asymmetry for smaller countries with extremely high political cost structures.
True free trade does not require a thousand-page treaty, twenty-five years of negotiations, and decades to prove failure.
It simply requires eliminating tariffs, reducing public spending, and allowing people to exchange freely.
We will see concrete examples of countries that succeeded by competing without tariffs against tariff-protected economies.