20.1 Protectionism: An Indirect Subsidy from Consumers to Producers

Protectionism and Its Effects on Markets

Protectionism refers to government policies that restrict international trade to shield domestic industries from foreign competition. While these policies aim to boost local production and employment, they come with real tradeoffs: higher prices for consumers, fewer choices in the market, and losses in overall economic efficiency. The subtitle of this topic captures it well: protectionism acts as an indirect subsidy from consumers to producers, transferring surplus from buyers to domestic sellers through artificially higher prices.

Protectionism, Tariffs, Import Quotas, Non-Tariff Barriers

Protectionism is any government policy that restricts international trade to protect domestic industries from foreign competition. The stated goals are usually to promote domestic production, employment, and economic growth. There are three main tools governments use:

Tariffs are taxes imposed on imported goods. They come in two forms:

• Ad valorem tariffs are calculated as a percentage of the imported good's value. A 10% tariff on a $100 item adds $10 in tax.
• Specific tariffs are a fixed charge per unit of the imported good, regardless of its price. For example, $10 per ton of imported steel.

Import quotas are quantitative limits on how much of a good can be imported, typically set below the free-trade level. For instance, a country might cap car imports at 10,000 vehicles per year.

Non-tariff barriers (NTBs) are regulations or policies that restrict trade without directly taxing imports. These include product standards (like safety or labeling requirements), licensing requirements (requiring importers to obtain special permits), and burdensome administrative procedures (excessive customs paperwork or inspections).

Impact on Domestic and International Markets

All three tools restrict the supply of imported goods, but they work through slightly different mechanisms.

Tariffs:

• Raise the price of imported goods in the domestic market. On a supply-and-demand diagram, the supply curve for the imported good shifts left, increasing the equilibrium price and decreasing the equilibrium quantity.
• Domestic producers benefit because they can now sell at the higher price and increase their output.
• Domestic consumers pay more and buy less, since imported goods become less affordable.
• Foreign producers face reduced demand for their exports.

Import quotas:

• Directly restrict the quantity of imports, creating scarcity. This also shifts the supply curve left, raising the domestic price.
• Domestic producers raise prices and expand output, just as with a tariff.
• Domestic consumers face higher prices and limited availability of imported goods.
• Foreign producers hit a hard ceiling on how much they can export.
• One key difference from tariffs: quotas don't generate government revenue (unless the government auctions off import licenses). Instead, the price markup on the limited imports often goes to whoever holds the import rights, creating what's called quota rent.

Non-tariff barriers:

• Increase costs or create obstacles for foreign producers trying to access the domestic market, effectively shifting the import supply curve left.
• Domestic producers benefit from reduced competition and higher prices.
• Domestic consumers may face higher prices and fewer choices as imported options shrink.

Consumer and Producer Surplus, Deadweight Loss

This is where the "indirect subsidy from consumers to producers" idea becomes concrete. A tariff doesn't just raise prices; it redistributes surplus in a specific, measurable way.

When a tariff is imposed, three things happen to surplus:

1. Consumer surplus decreases because consumers pay higher prices and buy fewer goods. Part of that lost consumer surplus gets transferred to other parties, but part of it simply disappears as deadweight loss.
2. Producer surplus increases because domestic producers sell at the new, higher price. This is the "indirect subsidy" that consumers are effectively paying.
3. Government revenue increases from the tariff collected on remaining imports.

Even after accounting for the gains to producers and the government, some of the lost consumer surplus isn't captured by anyone. That's the deadweight loss, which represents a net reduction in total economic welfare. It comes from two sources: the inefficiency of domestic producers now making units that foreign producers could have made more cheaply, and the lost transactions from consumers who would have bought at the lower free-trade price but won't buy at the tariff-inflated price.

Calculating changes in surplus:

These formulas apply to the standard linear supply-and-demand diagram you'll see in this course. The areas are trapezoids, which is why the formulas use the average of two quantities:

• Change in consumer surplus: $\Delta CS = -\frac{1}{2} \times (P_2 - P_1) \times (Q_1 + Q_2)$ where $P_1$ is the initial price, $P_2$ is the price after the tariff, $Q_1$ is the initial quantity demanded, and $Q_2$ is the quantity demanded after the tariff.

• Change in producer surplus: $\Delta PS = \frac{1}{2} \times (P_2 - P_1) \times (Q_{S1} + Q_{S2})$ where $Q_{S1}$ and $Q_{S2}$ are the quantities supplied by domestic producers before and after the tariff.

• Deadweight loss: $DWL = \frac{1}{2} \times (P_2 - P_1) \times (Q_1 - Q_2)$ This captures the net loss in total surplus that no one receives.

Foreign producers also lose out. Their exports fall, reducing their producer surplus and revenue from international sales.

The core takeaway: protectionism doesn't create new wealth. It shifts surplus from consumers to domestic producers and the government, while destroying some surplus entirely through deadweight loss. That's why economists describe it as an indirect subsidy funded by consumers through higher prices.