Following a surge in post-pandemic inflation, the Federal Reserve aggressively raised its benchmark federal funds rate from near-zero (0.0%–0.25%) to a target range of 5.25%–5.50% by mid-2023. According to classical investment theory, such a sharp increase in the cost of capital should dampen aggregate demand by raising the cost of debt finance and increasing the hurdle rate for new capital projects.
Yet, US private non-residential fixed investment grew at a resilient pace throughout 2023 and early 2024. A key catalyst was the implementation of major federal industrial policies, namely the Inflation Reduction Act (IRA) and the CHIPS and Science Act. These legislative packages offered hundreds of billions of dollars in direct subsidies and tax credits for domestic manufacturing in green energy and semiconductor fabrication. This massive fiscal injection lowered the post-tax cost of investment, making projects financially viable despite higher borrowing costs.
Furthermore, a significant portion of US investment was driven by the "accelerator effect" in the technology and artificial intelligence sectors. Rapid growth in consumer and corporate demand for generative AI software forced tech firms to rapidly expand their data-center infrastructure. Because these tech giants sat on multi-billion dollar cash piles accumulated during the low-rate decade, they were virtually immune to the rising cost of bank loans, funding their capital expenditures entirely through retained earnings.
Conversely, the impact of high interest rates was highly uneven. Small and medium-sized enterprises (SMEs), which rely heavily on floating-rate commercial loans and lack access to corporate bond markets, reported a severe tightening of credit conditions. Surveys by the National Federation of Independent Business (NFIB) indicated that high borrowing costs and deteriorating expectations of future sales—indicative of flagging "animal spirits"—were severely restricting capital expansion plans for smaller firms.
Assess the extent to which interest rates are the primary determinant of business investment. Refer to Extract A in your answer.
