Latest / Monetary Policy Explained with Fexingo: Central Banks, Money Supply, and Interest Rates / The Fed Funds Rate And The Cost Of Capital
Transcript
- Lucas: Look at the federal funds rate right now. It is sitting at a specific band that has defined the cost of money for about eighteen months, but the real story isn't the headline number itself. It is the spread between that policy rate and what you actually pay when you walk into a bank to borrow. Luna: So the policy rate is just the starting line? Because I have been looking at small business loan applications and the margins are still wider than they were three years ago. Lucas: Exactly. The federal funds rate is the overnight rate where banks lend reserves to each other. It is the anchor. But when that anchor moves, the transmission to the broader economy is never instant or uniform. Banks have to cover their own funding costs, which include deposits and wholesale borrowing, and then add a risk premium. Luna: Right, so even if the Fed cuts rates tomorrow, my local bank might not lower my car loan payment by the same amount immediately. Lucas: That is the friction we need to talk about today. We often treat interest rates like a simple dial, but they are actually a complex ecosystem of different maturities and risk profiles. Let us look at the ten-year Treasury yield as the proxy for long-term risk-free capital. If the federal funds rate stays elevated while long-term yields drop, you get an inverted yield curve, which historically signals tight credit conditions. Luna: And that inversion forces banks to be choosier about who gets funded, doesn't it? Lucas: It does. When short-term rates are higher than long-term rates, banks make less profit on the traditional maturity transformation model. They borrow short and lend long. If the spread collapses, their net interest margin gets squeezed, and they respond by tightening lending standards. That is why you see credit availability shrink even before a recession officially starts. Luna: So the health of the banking sector directly dictates how easy or hard it is for businesses to grow, regardless of what the central bank says. Lucas: Precisely. And this brings us to the corporate bond market. Companies do not rely solely on bank loans. They issue bonds to raise capital for expansion or refinancing. The yield on investment-grade corporate bonds usually tracks the ten-year Treasury plus a spread. That spread reflects the perceived risk of default. Luna: Which means if investors are worried about the economy, that spread widens, making borrowing more expensive for companies even if the Fed is cutting rates. Lucas: Yes. We saw this dynamic play out repeatedly over the last few quarters. When credit spreads widen, it is a signal that the market believes the cost of capital is rising due to risk, not just policy. For a CFO, this changes the calculus on whether to build a new factory or buy back shares. High cost of capital favors share buybacks because debt becomes too pricey for heavy investment. Luna: That feels like a subtle shift in corporate behavior that most people miss. They just look at stock prices. Lucas: Most people do. But the decision to invest in physical capital is heavily sensitive to the weighted average cost of capital. If your cost of debt goes up by fifty basis points, a marginal project that was barely profitable becomes unprofitable. You kill growth projects before they ever appear on a balance sheet. Luna: And those projects are usually the ones that create jobs, aren't they? Lucas: They are. So we have a direct line from the federal funds rate to corporate investment decisions, and ultimately to employment. But let us zoom out to the consumer side, because that is where the pain is most visible. Mortgages are tied to long-term yields, not the overnight rate. Luna: So homeowners feel the impact of global bond market sentiment more than domestic policy shifts. Lucas: Exactly. A thirty-year fixed mortgage is priced off the ten-year Treasury swap. If foreign investors demand higher yields on US debt because of inflation fears or fiscal deficits, mortgage rates rise, even if the Fed is holding steady. This locks up housing liquidity. People stop moving, renovation slows down, and the construction sector feels the chill. Luna: It creates a freeze in the housing market that lasts for years, not just months. Lucas: It does. And then you have revolving credit, like credit cards and personal loans. Those are floating rate products tied closely to prime rates, which track the federal funds rate almost one-to-one. So consumers with high-interest debt feel the immediate sting of any policy hike, with no lag. Luna: Which reduces disposable income faster for households that are already leveraged. Lucas: Correct. And this divergence between fixed-rate borrowers and floating-rate borrowers creates a bifurcated economic experience. Homeowners with locked-in low rates from two years ago feel fine. New buyers or those with variable debt feel the pressure. It makes aggregate data like GDP growth misleading because the underlying distribution of financial stress is uneven. Luna: So when we see GDP hold up, it might just be the protected cohort carrying the weight. Lucas: Or it might be the result of delayed adjustment. Consumers tend to roll over debt rather than default, masking the true cost until a shock occurs. But let me pause here for a moment. If walking through the economics of credit with us has made something click, or if you appreciate that we deliberately don't run ads on these shows, the link is buy me a coffee dot com slash fexingo. Your support keeps this independent research possible. Luna: Yeah, and it allows us to dig into these deeper mechanics without needing to chase clicks or sponsorships. Thank you for keeping the show going. Lucas: Thanks for listening. Now, back to the mechanics. We have talked about the supply side of credit, but we haven't fully addressed the demand side. Why are companies and consumers borrowing at all when rates are this high? Luna: Because sometimes you have no choice. Refinancing existing debt is cheaper than letting it mature into a much higher rate. Lucas: That is the refinancing wall. Many corporations issued debt at four percent five years ago. As those bonds mature, they must refinance at six or seven percent. This is not new borrowing; it is survival. It increases their interest expense, which eats into net income, reducing the equity available for future growth. Luna: So earnings per share take a hit simply from maintaining the status quo, not from any operational decline. Lucas: Exactly. And analysts often miss this. They look at revenue growth and ignore the interest coverage ratio. A company can grow sales but still become insolvent if its interest expenses outpace cash flow generation. This is a silent killer in high-rate environments. Luna: It reminds me of the leverage cycles we see in private equity. They load up on debt when rates are low, and when rates rise, the entire portfolio gets revalued downward instantly. Lucas: Right. Private credit markets have filled some of that gap, offering higher yields but with less transparency. Regulators are watching this closely because if a significant portion of corporate debt moves to opaque private lenders, a crisis could be harder to monitor and resolve. Luna: Less visibility means higher systemic risk, even if individual defaults seem contained for now. Lucas: Absolutely. And this brings us to the global dimension. Interest rates in the US do not exist in a vacuum. If European or Japanese central banks move differently, capital flows shift. Stronger dollar flows mean tighter financial conditions globally, even if US rates stay flat. Luna: So the Federal Reserve's actions have a spillover effect that can tighten credit worldwide. Lucas: Yes. Emerging markets often face a double whammy: higher US rates strengthen the dollar, making their own dollar-denominated debt more expensive to service. This triggers capital flight and forces them to raise their own rates, stifling their growth. Luna: It creates a feedback loop where global instability reinforces the need for safe-haven assets like Treasuries, which keeps US rates lower than they otherwise would be. Lucas: That is the paradox of reserve currency status. The world needs dollars, so they buy US debt, which suppresses yields. But when that confidence wavers, the correction is violent. Right now, in October 2026, the system seems stable, but the fragility is built into the maturity structure. Luna: Stability is often just delayed volatility. Lucas: Well said. Let us look at the labor market connection. Higher interest rates reduce the present value of future wages, which lowers the willingness to hire. Firms delay hiring because the cost of waiting is lower than the cost of borrowing to expand capacity. Luna: So wage growth slows down naturally, not just because of policy intent, but because of reduced demand for labor. Lucas: Exactly. It is a mechanical drag on employment. And when unemployment rises, consumer spending falls, which further reduces demand for credit. It is a self-reinforcing cycle. The challenge for central bankers is to slow the economy enough to cool inflation without triggering a credit crunch that causes a recession. Luna: It is a tightrope walk. One misstep and you break the chain. Lucas: And that is why we watch the federal funds rate so closely. It is not just a number; it is the price of time. Every decision to invest or consume involves a trade-off between now and later. Interest rates quantify that trade-off. Luna: So understanding the rate is understanding the incentive structure of the entire economy. Lucas: Precisely. If you want to predict where the economy is going, look at the cost of capital. It tells you what is being built, what is being bought, and who is getting left behind. Luna: A powerful lens. It turns abstract policy into concrete reality. Lucas: It does. And as we move through the rest of the year, keep an eye on the spread between short-term policy rates and long-term corporate yields. That gap will tell you whether the engine of growth is stalling or accelerating. Luna: I will. Thanks for breaking down the mechanics, Lucas. Lucas: My pleasure. Let us see if the next quarter confirms this trend or surprises us.