8.3 Capital flows and financial account

Types and Impacts of Capital Flows

Capital flows record the movement of money across borders for investment purposes, and they show up in the financial account of the balance of payments. Understanding these flows matters because they directly determine how current account imbalances get financed and how exchange rates behave.

Types of Capital Flows

Foreign direct investment (FDI) is long-term investment where a foreign entity acquires a lasting interest in a domestic enterprise, typically defined as owning 10% or more of a company. Think of a Japanese automaker building a manufacturing plant in Mexico. FDI increases the financial account balance and contributes to real capital formation in the host country. Because it involves physical assets and long-term commitments, FDI tends to be the most stable type of capital flow.

Portfolio investment involves purchasing financial assets like stocks (equity shares) and bonds (government or corporate debt) without gaining managerial control. A pension fund in London buying Brazilian government bonds is portfolio investment. It also increases the financial account balance, but it's far more volatile than FDI because investors can sell financial assets quickly, potentially triggering sudden capital outflows.

Other investment is a catch-all category covering bank loans, currency deposits, and trade credits (short-term financing for international trade). These can be short-term or long-term. A German bank lending to a Turkish firm falls here. This category also increases the financial account balance.

Official reserve assets are foreign exchange reserves held by central banks (U.S. dollars, euros, yen, gold). When a central bank buys or sells foreign currency to intervene in exchange rate markets, those transactions show up here. Changes in official reserves affect the financial account balance.

Factors Driving International Capital Flows

• Interest rate differentials are a primary driver. If U.S. bonds yield 5% while Japanese bonds yield 2%, capital tends to flow toward the U.S. seeking higher returns. Lower domestic rates encourage outflows as investors search for better yields abroad.
• Economic growth and stability attract investors. Countries with stronger GDP growth and political stability draw capital inflows from investors seeking opportunities in thriving economies.
• Exchange rate expectations matter significantly. If investors expect the yuan to appreciate, they'll move capital into China to capture currency gains on top of investment returns. If they expect the peso to depreciate, capital flows out to avoid losses.
• Institutional quality shapes long-term attractiveness. Strong property rights, reliable contract enforcement, and transparent legal systems make a country a safer destination for foreign capital.
• Global risk sentiment shifts capital between developed and emerging markets. When investors are risk-tolerant (bullish sentiment), capital flows toward higher-yielding emerging markets like Brazil or Indonesia. When fear rises, capital retreats to perceived safe havens like U.S. Treasuries.

Risks vs. Benefits of Capital Flows

Benefits:

1. Capital inflows finance domestic investment (new factories, infrastructure) and support higher GDP growth, especially in countries where domestic savings are insufficient.
2. Access to international capital markets lets countries diversify their funding sources beyond what domestic savers can provide.
3. Portfolio investment can improve market efficiency through better price discovery and greater liquidity (making it easier to buy and sell assets).

Risks:

1. Sudden capital outflows can trigger financial instability (stock market crashes) and currency crises (sharp depreciation), as seen in the 1997 Asian Financial Crisis.
2. Excessive reliance on short-term capital flows increases vulnerability to external shocks because that money can leave overnight.
3. FDI may result in foreign control over strategic domestic assets (natural resources, key industries), creating political tensions.
4. Large capital inflows can fuel asset price bubbles (housing booms) and financial imbalances (excessive private debt).

The Financial Account and Current Account Imbalances

The financial account is the mirror image of the current account. This relationship comes from the balance of payments identity:

$\text{Current Account} + \text{Financial Account} + \text{Capital Account} + \text{Errors and Omissions} = 0$

A current account deficit means a country imports more goods, services, and transfers than it exports. That gap must be financed by a financial account surplus, which represents net capital inflows. For example, the U.S. runs persistent current account deficits financed largely by foreigners buying U.S. Treasury bonds and making other investments.

A current account surplus means exports exceed imports. The excess earnings flow abroad as net capital outflows, producing a financial account deficit. China and Germany, for instance, run current account surpluses and invest the proceeds overseas.

The key takeaway: every current account imbalance has a corresponding and offsetting financial account imbalance. A country cannot run a current account deficit without attracting foreign capital to finance it, and a country running a surplus must be sending capital abroad.