For decades, many emerging economies have relied on high interest rates to attract foreign capital. While this strategy can be effective, its benefits are often temporary.

Much of this capital, commonly referred to as “hot money,” flows rapidly into government securities and other liquid financial assets in search of attractive yields. Yet it is equally quick to leave when global financial conditions shift, risk perceptions rise, exchange rate pressures emerge, or more attractive opportunities become available elsewhere.

The lesson is simple: capital that comes solely for yield rarely stays to support long-term growth.

This raises a fundamental policy question: Should the objective be to attract capital or to attract commitment?

A sustainable investment environment is built not on the highest interest rates, but on the maximum levels of confidence, all things being equal.

Nigeria’s recent capital flow data reinforces this point. According to the National Bureau of Statistics (NBS) Q1 2026 Capital Importation Report, Foreign Portfolio Investment (FPI), accounted for $9.86 billion (95.1% of total inflows), driven largely by high-yielding money market instruments and bonds. In contrast, Foreign Direct Investment (FDI) amounted to just $135.08 million (1.3%), highlighting a strong investor preference for short-term, liquid financial assets over long-term productive investments.

Investors with a long-term horizon, whether in manufacturing, infrastructure, technology, agriculture, renewable energy, or industrial development, look beyond yields. They assess the quality of institutions, policy consistency, contract enforcement, political stability, infrastructure, energy reliability, access to skilled labour, and the ease of doing business.

These are the foundations that attract patient capital, investment that builds factories, strengthens and develops supply chains, transfers technology, develops human capital, and generates sustainable employment. Unlike speculative portfolio flows, such investments are less likely to exit at the first sign of uncertainty because they are anchored in productive assets and long-term opportunities.

This is not to diminish the importance of FPIs. Liquid capital markets are essential to a modern economy, and portfolio investors play a vital role by providing market liquidity, facilitating price discovery, and supporting government and corporate financing. However, portfolio flows should complement an economy’s investment base, not define it.

The policy objective, therefore, should be balance.

Governments must continue to deepen domestic financial markets while strengthening the conditions that encourage and incentivise productive investment. Stable macroeconomic policies, predictable regulations, competitive tax frameworks, reliable infrastructure, efficient ports, affordable energy, robust legal systems, and credible institutions all reduce investment risk far more sustainably than elevated interest rates alone.

Equally important is the mobilisation of domestic capital. Pension funds, insurance companies, sovereign wealth funds, and retail investors can provide a stable source of long-term financing that is less vulnerable to external shocks. Economies with deep domestic saving pools are generally better positioned to withstand periods of global financial conditions tightening.

Ultimately, the most competitive and better-positioned economies are those that attract investment through productivity, innovation, and institutional strength rather than the temporary attraction of high yields.

Hot money undoubtedly has its place. It supports market liquidity, broadens the investor base, and provides short-term financing. But it should never become the foundation of national investment strategy.

Sustainable prosperity is built by capital that plants roots, not by capital that merely passes through.

The real measure of investment success is not how much money enters a country, but how much value it creates after it arrives.

The strongest economies are financed by confidence, not convenience; by productive investment, rather than the pursuit of the next highest yield.