What the Fed’s Projections Actually Show
The FOMC’s December projections include forecasts for real GDP growth, the unemployment rate, and inflation as measured by the personal consumption expenditures price index. The document also contains the so-called “dot plot,” which maps where each FOMC participant expects the federal funds rate to land at the end of each calendar year through the longer run. These projections collectively sketch a path of gradual policy normalization, the kind of environment that tends to pull long-term bond yields, and by extension mortgage rates, lower over time. Mortgage rates do not move in lockstep with the federal funds rate. The 30-year fixed rate is more closely tied to the yield on the 10-year Treasury note, which reflects investor expectations about inflation, growth, and the overall direction of Fed policy rather than any single rate decision. But when the Fed signals a sustained easing cycle, bond markets typically price in lower future yields, and mortgage lenders adjust accordingly. That transmission mechanism is the core logic behind the sub-5% forecast. Housing economists and mortgage market analysts often cite an expected rate-cut environment as a prerequisite for meaningfully lower mortgage rates. The December FOMC projections are one key piece of institutional context for that environment, showing many participants anticipating continued easing through 2026 and into 2027. The question is how quickly and smoothly that easing translates into cheaper home loans.Why Sub-5% Rates May Not Solve the Affordability Problem
Even if mortgage rates do fall below 5% in 2026, the housing market faces a supply problem that lower borrowing costs alone cannot fix. Home construction has lagged population growth for more than a decade, and existing homeowners who locked in rates below 4% during the pandemic era have been reluctant to sell, a dynamic often called the “lock-in effect.” The result is a persistent shortage of homes for sale, particularly in price ranges accessible to first-time buyers. Lower rates tend to increase demand faster than they increase supply. When borrowing becomes cheaper, more buyers enter the market, but the inventory of available homes does not expand at the same pace. That mismatch can push prices higher, partially or fully offsetting the savings from a lower interest rate. In high-demand metro areas with tight zoning rules and limited buildable land, the effect can be especially pronounced. This tension represents the central weakness in the optimistic rate forecast. A buyer who qualifies for a mortgage at 4.8% instead of 6.5% will see a meaningful drop in monthly payments on the same-priced home. But if that home’s price rises by 8% or 10% because more buyers are competing for the same limited stock, the net affordability gain shrinks considerably. For first-time buyers without existing home equity to roll into a new purchase, the math could end up roughly neutral. The dominant assumption in much of the current housing coverage is that lower rates equal better affordability. That framing is incomplete. Affordability is a function of three variables: the mortgage rate, the home price, and the buyer’s income. Rates are the only one of those three that the Fed’s projections directly influence, and the other two have been moving in the wrong direction for years. Median home prices have continued to climb in most markets, and wage growth, while positive, has not kept pace with cumulative housing cost increases since 2020. A more accurate way to read the sub-5% forecast is as a necessary but not sufficient condition for a healthier housing market. Lower rates could unlock some of the frozen inventory by encouraging current homeowners to sell, particularly those who bought before 2020 and still hold substantial equity. But the scale of that unlocking depends on how far rates actually fall and how long they stay low, neither of which is guaranteed. The Fed’s projections are not promises. They represent the median expectations of a group of policymakers whose views shift in response to incoming economic data. If inflation proves stickier than expected, or if a supply shock from tariffs or energy prices pushes costs higher, the easing cycle could slow or stall. Bond markets would adjust, and mortgage rates would follow. There is also the question of the spread between Treasury yields and mortgage rates. That spread widened significantly during the rate volatility of 2022 and 2023, meaning mortgage rates stayed higher than Treasury yields alone would suggest. If the spread remains elevated due to lender risk aversion or secondary market conditions, even a meaningful drop in Treasury yields might not push mortgage rates as low as economists hope. For prospective buyers, the practical takeaway is measured. A move toward sub-5% rates would represent a real improvement in borrowing costs compared to the past two years. Monthly payments on a typical home purchase would decline noticeably, expanding the pool of buyers who can qualify for a loan. But the broader affordability picture depends on what happens to prices and inventory at the same time, and those factors are shaped by local zoning decisions, construction labor availability, and demographic trends that operate on a much longer timeline than monetary policy. The December FOMC projections offer context that some housing economists and analysts use when discussing where mortgage rates could head. The Fed’s own participants outline a potential path toward lower policy rates, but those projections can change as inflation and growth data evolve. Whether that path delivers the relief that buyers need depends on forces well beyond the Fed’s control, forces that have kept homeownership out of reach for a growing share of Americans regardless of where interest rates sit. The rate forecast is real. The affordability forecast is far less certain.
Paul Anderson is a finance writer and editor at The Financial Wire. He has spent seven years writing about investment strategies and the global economy for digital publications across the US and UK. His work focuses on making sense of economic policy, cost-of-living issues, and the stories that affect everyday Americans.
