The Cost of Money Is Rising Again
The Federal Reserve’s first rate increase since 2023 has pushed the policy range to 3.75%–4.00%. With inflation still above target, spending resilient and long-term borrowing costs already high, the economic story is no longer about when rates will fall. It is about how long expensive money will persist.
On September 16, the Federal Open Market Committee voted unanimously to raise its benchmark rate by a quarter percentage point. The move ended a three-year stretch without a rate increase and reset the central question for the U.S. economy. Inflation has not returned to the Fed’s 2% goal, yet the labor market is still functioning, retail spending has remained strong in nominal terms and business investment—especially around artificial intelligence and computing infrastructure—has been robust enough to keep demand from cooling cleanly.
That combination matters because the Fed does not need an economy in outright boom conditions to worry about inflation. It needs to judge whether total demand is running too strongly relative to the economy’s capacity to supply goods and services without persistent price pressure. The latest data offer arguments on both sides. Second-quarter real GDP grew at a 1.5% annual rate, down from 2.1% in the first quarter. But August retail and food-service sales jumped 1.2% from July before adjusting for inflation, payrolls rose by 162,000, and unemployment held at 4.1%.
Why the Fed moved even though growth is not surging
The Fed’s own statement described economic activity as expanding at a solid pace, domestic spending as resilient, productivity growth as strong and capital investment as robust. At the same time, the central bank said inflation remained elevated. That framing is important: policymakers are treating the economy as capable of absorbing tighter policy, at least for now, rather than as one already slipping into a broad downturn.
None of those figures, by itself, settles the argument. Payroll gains are moderate rather than explosive. GDP slowed in the second quarter. July real consumer spending was essentially flat even as nominal spending increased. Yet there is also no clear collapse in demand. That middle ground creates the policy problem: keeping rates too low risks allowing inflation to become embedded, while raising them too aggressively could weaken activity that is already uneven.
Growth has lost momentum
Real GDP decelerated from the first quarter, housing remains constrained by expensive financing, and households report tighter access to credit. Those are exactly the channels through which higher rates are designed to restrain demand.
Demand has not broken
Retail sales were strong in August, employment continued to expand, and large-scale capital investment remains a source of demand. A resilient economy can keep service prices and other demand-sensitive categories sticky.
The problem is broader than gasoline—and more complicated than tariffs alone
The August Consumer Price Index rose 0.4% from July and 3.4% from a year earlier. Gasoline prices increased 3.9% in the month and were responsible for more than one-third of the monthly headline increase. Energy therefore still matters. But the Fed’s preferred PCE measure was already running at 3.7% year over year in July, with core PCE excluding food and energy at 3.3%.
Recent Federal Reserve research also suggests that the sources of goods inflation are overlapping. Minneapolis Fed economists estimated that delayed tariff pass-through was contributing roughly 0.2 to 0.4 percentage point to core PCE inflation as of July. Their work also found unusually strong price increases in video and information-processing equipment, a category where demand linked to the AI investment boom appeared to be a major force. In other words, supply shocks and demand pressure can coexist.
Productivity is the hopeful part of the story. The near-term complication is that an investment boom can raise both capacity and demand at the same time.
That distinction helps explain why stronger productivity is not automatically a reason for the Fed to ease. If better technology lets firms produce more with the same labor and capital, it can reduce inflation pressure over time. But getting there may require a burst of spending on data centers, networking gear, power infrastructure and software. If that investment is large enough, it can support aggregate demand before the supply benefits fully arrive.
What a higher federal funds rate actually changes for households
The Fed does not set mortgage rates, auto-loan offers or credit-card APRs directly. It changes the target for the overnight federal funds rate, and that shift moves through financial markets at different speeds. Short-term and floating rates often respond quickly. Long-term borrowing costs depend on a much larger set of expectations about inflation, economic growth, future Fed policy and risk.
Fast pass-through
Many variable credit-card APRs are tied to the prime rate. Federal Reserve officials have noted that prime is conventionally about 3 percentage points above the top of the federal funds target range, although issuers add their own margins and terms.
Variable borrowers feel it sooner
Home-equity lines of credit commonly use floating benchmarks, so a higher policy rate can raise carrying costs relatively quickly for households with balances.
Policy plus lender risk
Auto rates respond to market yields and lenders’ assessments of credit risk. The Fed matters, but borrower credit, vehicle values and delinquency risk also influence the final price.
Long-term expectations dominate
Thirty-year fixed mortgage rates are linked more closely to longer-term bond markets than to the overnight federal funds rate. They can rise even before a Fed hike if investors expect tighter policy or persistent inflation.
Higher yields can help depositors
Money-market funds, Treasury bills, certificates of deposit and some savings accounts may offer higher yields when short-term rates rise, though banks choose how much and how quickly to pass through the increase.
Illustration: on a $400,000, 30-year fixed mortgage, principal-and-interest payments rise from about $2,597 at 6.76% to about $2,648 at 6.95%. The comparison uses Freddie Mac’s Sept. 10 and Sept. 17 weekly averages and excludes taxes, insurance, points and fees. It is an illustration, not a loan quote.
Mortgage rates near 7% turn a policy debate into a monthly-payment problem
Freddie Mac’s weekly survey put the average 30-year fixed mortgage at 6.95% on September 17, up from 6.76% one week earlier and 6.26% a year earlier. For potential buyers, that increase changes the size of the mortgage a household can comfortably carry. For existing homeowners with older fixed-rate loans, it can strengthen the incentive to stay put rather than sell and finance a replacement home at a higher rate.
Construction data show the same mixed pattern seen elsewhere in the economy. Overall housing starts fell 2.6% in August from July, while single-family starts rose 7.6%. Building permits fell 2.7%, including a 1.8% decline in single-family permits. Housing completions dropped sharply. Monthly housing estimates are noisy and come with wide margins of error, but the direction of financing costs remains unambiguous: projects must clear a higher hurdle when capital is expensive.
Consumers are still spending, but the credit cushion is not evenly distributed
The New York Fed reported $18.77 trillion in total household debt at the end of the second quarter. Credit-card balances were $1.263 trillion, auto-loan balances $1.713 trillion and mortgage balances $13.117 trillion. The aggregate share of outstanding debt in some stage of delinquency improved slightly to 4.7%, but new delinquencies for auto loans and credit cards remained elevated enough for researchers to continue watching them.
Consumer credit continued to expand in July at a 4.2% seasonally adjusted annual rate, with revolving credit up 2.5% and nonrevolving credit up 4.8%. Meanwhile, the New York Fed’s August household spending survey found median year-over-year growth in monthly nominal spending had eased to 4.7% from 4.8% in April, while expected spending growth over the next year edged up to 3.6%.
Those numbers are consistent with a consumer sector that is not collapsing but is becoming more selective. Higher-income households with assets and fixed-rate debt may experience higher interest income alongside expensive borrowing. Renters, first-time homebuyers, households carrying revolving balances and people replacing cars are more exposed to current financing conditions. Monetary tightening therefore works through the average economy while landing very unevenly across individual balance sheets.
Large investment can stay strong while smaller borrowers feel the squeeze
The Fed’s emphasis on robust capital investment points to one of the economy’s sharpest divides. Large technology companies and infrastructure builders may have enough cash flow, market access or strategic urgency to keep investing through higher rates. A local manufacturer, restaurant group or contractor often finances expansion with bank credit, equipment loans or commercial real estate borrowing whose cost moves more directly with prevailing rates.
That does not mean a rate hike immediately causes layoffs or canceled factories. Monetary policy works with lags. But the hurdle rate for new projects rises. A marginal store opening, vehicle fleet, warehouse or machine purchase that made sense under cheaper financing may no longer earn enough to justify the cost of capital. The cumulative effect is what the Fed is trying to influence: slightly fewer projects, slightly less credit demand, slower hiring and less pricing power over time.
The Treasury market shows why the distinction between short and long rates matters. The 10-year Treasury yield was just under 5% on September 21, according to Treasury data, far above the Fed’s overnight target. If investors believe inflation will remain stubborn, growth will stay firm, or government and private borrowers will demand more capital, long-term yields can stay elevated even if the Fed pauses at a future meeting.
Supply shocks still matter because the Fed cannot produce oil or remove a tariff
Interest-rate policy is powerful, but it is not a tool for increasing crude-oil production, clearing a shipping bottleneck or lowering a tariff. When inflation comes from supply shocks, the Fed faces a difficult trade-off: raising rates cannot directly create more supply, yet allowing a temporary price shock to spread into wages, services and expectations can make inflation more persistent.
The latest inflation data illustrate the dilemma. Gasoline drove a large share of the August CPI increase, but underlying inflation was already too high for the Fed’s comfort. Minneapolis Fed research suggests tariff pass-through has become more visible in consumer prices, while AI-related equipment demand is also contributing to goods inflation. A central bank can decide how much of those shocks to “look through,” but it still has to respond if they begin to sustain broader demand or inflation expectations.
The new projections say inflation falls slowly—and rates stay high
The September Summary of Economic Projections is not a binding plan, but it shows how FOMC participants collectively see the trade-off today. The median forecast places headline PCE inflation at 3.7% in 2026, then 2.3% in 2027, 2.1% in 2028 and 2.0% in 2029. The median unemployment rate is 4.1% in each year from 2026 through 2029. Real GDP growth is projected at 2.3% in 2026 and 2.4% in 2027 before moderating.
- Real GDP
- 2.3%
- Unemployment
- 4.1%
- PCE inflation
- 3.7%
- Fed funds
- 4.1%
- Real GDP
- 2.4%
- Unemployment
- 4.1%
- PCE inflation
- 2.3%
- Fed funds
- 4.1%
- Real GDP
- 2.2%
- Unemployment
- 4.1%
- PCE inflation
- 2.1%
- Fed funds
- 3.9%
- Real GDP
- 2.1%
- Unemployment
- 4.1%
- PCE inflation
- 2.0%
- Fed funds
- 3.6%
The most consequential change from June is the interest-rate path. The median federal funds projection for the end of 2026 moved up to 4.1% from 3.8%, while the 2027 median moved to 4.1% from 3.6%. That is a substantial shift in the expected duration of tight money. If the economy roughly follows those medians, borrowers should not assume that a quick return to the low-rate environment is around the corner.
Four signals matter more than trying to guess the next meeting
Watch whether price pressure moves beyond energy and tariff-sensitive goods into services and other demand-sensitive categories. A sustained deceleration would give the Fed more room to pause.
Payroll growth, job openings, unemployment claims and wage trends will show whether tighter credit is cooling hiring without producing a sharp deterioration in employment.
If Treasury and mortgage yields remain elevated independently of the overnight rate, financial conditions may tighten even without repeated Fed hikes. A sharp decline would work in the opposite direction.
Lower energy pressure, less tariff pass-through, improved supply chains or faster productivity could reduce inflation without requiring as much demand destruction. The timing of those effects is uncertain.
One quarter-point hike is not the story. The duration is.
For households, the practical issue is whether mortgage, auto and revolving-credit costs stay high long enough to change spending plans. For businesses, it is whether the return on a new project still clears the cost of capital. For the Fed, it is whether inflation can return to 2% without forcing a much sharper slowdown. September’s decision did not answer those questions. It confirmed that the central bank now sees enough inflation risk to make money more expensive again.
Sources and data notes
Data and official statements available through September 22, 2026. Monthly and quarterly economic statistics are subject to revision.
- Federal Reserve — FOMC statement, Sept. 16, 2026
- Federal Reserve — September 2026 Summary of Economic Projections
- Bureau of Labor Statistics — Consumer Price Index, August 2026
- Bureau of Labor Statistics — Employment Situation, August 2026
- Bureau of Economic Analysis — Personal Income and Outlays, July 2026
- Bureau of Economic Analysis — GDP, second estimate, Q2 2026
- U.S. Census Bureau — Advance Monthly Retail and Food Services Sales, August 2026
- Freddie Mac — Primary Mortgage Market Survey, Sept. 17, 2026
- U.S. Census Bureau — New Residential Construction, August 2026
- Federal Reserve Bank of New York — Household Debt and Credit, Q2 2026
- Federal Reserve Bank of New York — Household Spending Survey, August 2026
- Federal Reserve — Consumer Credit G.19, July 2026
- Federal Reserve Bank of Minneapolis — analysis of tariffs, AI equipment demand and core inflation
- U.S. Treasury — Daily Treasury par yield curve rates
- Federal Reserve — monetary policy transmission explainer
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