Will Fed Raise Rates 50 Bps in December 2026?

US inflation slowed in October. Yet the report made investors more worried about a larger Federal Reserve interest-rate increase. Prices rose faster than economists expected, while the underlying inflation measure failed to improve.

The timing made the surprise particularly important. Hours before the release, Fed Governor Christopher Waller had described the kind of inflation reading that could justify considering a half-percentage-point hike in December. The report then matched that condition.

A 50-basis-point increase is now a credible possibility, but it is neither an announced decision nor the market’s main expectation. Understanding the difference requires looking beyond the headline inflation number: at which prices are rising, whether the economy can withstand higher rates and what information the Fed will have before its next meeting.

Why is a 50-basis-point Fed rate hike being discussed?

The immediate reason is Waller’s unusually specific warning before the October inflation report on November 10. He favoured a quarter-point December increase even if inflation improved. If monthly core consumer inflation remained around 0.3% or higher, he said a larger move should be considered. The subsequent reading was 0.3%.

Core inflation excludes food and energy, whose prices can swing sharply. Its persistence matters because it helps policymakers judge whether inflation pressures extend beyond those volatile categories.

Waller’s concern was also about credibility. If the Fed signals that it will tackle persistent inflation but repeatedly delays action, households and businesses may become less confident that it will restore price stability. That is his argument for considering faster action, rather than a commitment by the rate-setting committee.

Sources: Waller’s November 10 speech; October CPI release.

A basis point is one-hundredth of a percentage point. Therefore, 50 basis points means an increase of 0.50 percentage point. Here is how the December alternatives compare:

Source: October FOMC statement. Future ranges are arithmetic scenarios, not Fed guidance.

What did the latest US inflation report actually show?

The report showed slower overall monthly inflation, but less improvement than economists had expected. Underlying inflation remained unchanged for a third consecutive month.

Sources: BLS October CPI release; Reuters reporting on economist forecasts. Actual monthly changes are seasonally adjusted.

This explains the apparently contradictory market response. Inflation can slow from the previous month and still disappoint investors if they expected a bigger slowdown. The core reading also showed that the anticipated easing in underlying price growth had not arrived.

Energy inflation slowed substantially, but shelter and food costs continued rising. Shelter accounted for more than 30% of the monthly increase in the overall index. Some categories, including used vehicles, became cheaper, so the report did not show every price moving higher.

There is also an important gap: the release did not provide the usual headline and core year-on-year CPI comparisons. The October 2025 government funding lapse prevented collection of the necessary comparison data for most series. An annual inflation figure should not be inferred from this month’s reading.

Why are inflation pressures lasting beyond oil and tariffs?

The concern is that higher costs are spreading through the economy while price increases in services remain persistent. Oil prices had recently eased, but that would not automatically remove those other pressures.

How can energy costs affect inflation outside petrol prices?

The war involving the US, Israel and Iran has raised energy costs. Energy is an input into transport, manufacturing and many services. A business facing higher diesel or electricity bills may raise its own prices. Those increases can appear in core inflation even though the core index excludes direct household purchases of fuel.

Recent Federal Reserve research suggests that energy shocks may have had a stronger and more persistent effect on core inflation after the pandemic. However, the researchers explicitly caution that their stronger-impact scenarios are an upper bound rather than a central forecast. The study supports monitoring the risk; it does not prove that October’s entire inflation surprise came from oil.

Sources: Federal Reserve research on oil prices and core inflation, November 9; Reuters reporting on the energy shock and inflation; Reuters on the recent oil-price decline.

How do tariffs and AI investment add to the pressure?

Tariffs can raise the cost of imported goods and materials. Businesses then decide how much to absorb through lower margins and how much to pass to customers. Tariffs are a contributing cost pressure, rather than a complete explanation for inflation across the economy.

AI investment adds another source of demand, particularly for computing equipment and the infrastructure that supports it. Fed research using purchasing-manager surveys identified price pressures associated with steel tariffs, energy disruption and rising demand for memory chips linked to the AI buildout.

The distinction is useful: new investment can expand productive capacity over time while also pushing up prices for scarce inputs during construction. Stronger productivity later does not guarantee immediate relief from today’s bottlenecks.

Source: Federal Reserve research on input-cost pressures.

Why do persistent service prices matter to the Fed?

Dallas Fed President Lorie Logan pointed to inflation in services such as healthcare, childcare and dining out that cannot be explained mainly by tariffs, oil or computer-chip demand. Her concern is that these broader pressures could persist even as particular supply shocks fade.

That matters because interest rates mainly work by influencing demand. They cannot directly reopen a shipping route or manufacture additional chips. They can, however, make borrowing more expensive and reduce the spending pressure that allows price increases to spread.

The Fed’s formal inflation target is 2% using the Personal Consumption Expenditures, or PCE, price index, rather than CPI. Core PCE inflation was 3.1% year on year in September, showing why the inflation concern extends beyond a single CPI release.

Sources: Logan’s November 10 speech; BEA September income and spending release; Federal Reserve explanation of monetary policy.

Does the US economy justify a 50-basis-point Fed hike in December?

The labour market gives the Fed room to consider another increase, but the evidence leaves policymakers weighing how quickly to move. Employment remains relatively stable, while weaknesses in hiring create a reason to assess the cost of a larger hike carefully.

What does the labour-market data tell us?

The October employment report shows why the Fed faces a choice between tackling inflation faster and avoiding unnecessary pressure on workers.

Source: BLS October employment report.

The distinction between keeping a job and finding a new one matters. Michelle Bowman described a labour market where workers are less likely to be laid off but also less likely to find another job. Low layoffs can keep unemployment stable even when hiring opportunities are limited.

That gives the Fed a reason to proceed carefully. Higher rates could discourage business expansion and recruitment, adding pressure to an already difficult job search. Bowman also noted that higher mortgage rates were weighing on housing activity, showing that some parts of the economy were already feeling tighter borrowing conditions.

Source: Michelle Bowman’s November 10 speech.

Why did a quarter-point increase remain more likely?

Market pricing continued to favour a 25-basis-point December increase. On November 10, the estimated probability of a half-point hike reached roughly 15% during the morning before retreating to about 10% in the late afternoon. These were changing market estimates rather than official Fed forecasts.

However, investors also increased their expectations for the number of smaller hikes ahead. Reuters reported that traders were pricing three quarter-point increases by mid-2027, compared with two before the inflation release. The adjustment therefore concerned both December’s decision and the subsequent path of rates.

Officials’ remarks help explain why the pace remains unsettled. Lorie Logan argued that rates needed to rise by at least another half-percentage point in total and suggested moving faster could be appropriate. Her remarks left the timing open. Bowman placed greater emphasis on assessing how persistent inflation and tighter financial conditions were affecting the economy.

The decision therefore depends on how urgently additional restraint is needed. Persistent inflation alongside steady employment would strengthen the argument for faster action. Cooling price pressures or clearer weakness in hiring and spending would strengthen the case for proceeding in smaller steps.

Sources: Reuters’ updated November 10 policy report, Lorie Logan’s and Michelle Bowman’s November 10 speeches.

Why did bond yields rise and US stocks fall?

The inflation surprise and Fed officials’ comments pushed investors to reassess how quickly interest rates could rise. Bond and share prices responded immediately because markets reflect expectations about future policy, even before the Fed changes rates.

Source: Reuters’ November 10 closing-market report. Equity changes are regular-session closes; the Treasury figures are rounded from the report’s bond-market snapshot.

Why do higher rate expectations push bond yields up?

When investors expect higher interest rates, they generally demand a higher return from bonds. Existing bonds with fixed interest payments become less attractive, so their prices fall. Paying less for the same future payments increases the yield available to a new buyer.

The two-year Treasury yield is particularly sensitive to the expected path of Fed policy. Its sharp rise showed investors adjusting to a higher near-term interest-rate outlook. It did not mean the Fed had already raised rates.

Why can the same expectations hurt share prices?

Higher interest rates can pressure US stocks through two main channels.

First, they can weaken future earnings. Businesses refinancing debt may face higher interest expenses, while more expensive borrowing can discourage customers from buying homes, vehicles or other financed purchases. The effect depends on each company’s debt and customer demand.

Second, they can reduce valuations even before earnings forecasts change. When investors can earn more from bonds, they may demand a higher return from shares too. That can reduce the price they are willing to pay today for profits expected years ahead.

The day’s index declines also reflected company-specific developments, particularly within technology. Higher rate expectations were an important market pressure, but the Nasdaq’s larger fall cannot be treated as a precise measure of the inflation report’s impact.

Source: Reuters’ account of the November 10 trading session.

Which data will the Fed receive before its December decision?

The most important timing detail is that November’s CPI report is scheduled for December 10, after the December 8-9 Fed meeting. Unless the schedule changes, officials will make that decision without another monthly CPI release.

They will still receive other important evidence:

Sources: BLS November calendar, BLS December calendar, BEA release schedule and FOMC calendar. Dates are scheduled and may change.

October’s PCE report therefore has particular importance. It will help show whether the CPI surprise also appears in the measure the Fed targets. Employment data will then help officials judge the economic cost of responding more aggressively.

The December projections matter alongside the decision. A smaller increase accompanied by expectations of further tightening could still unsettle markets. Investors need to assess both the immediate move and the likely path that follows.

Author’s take: How can investors prepare without betting on one Fed outcome?

Start by identifying what the inflation news changes in your own investment assumptions. A useful review has three parts:

1. For each business you follow, check whether higher input costs are reducing margins, whether customers are accepting price increases and when debt must be refinanced. These channels can affect earnings differently.
2. If your expectation is that inflation will ease as energy costs fall, look for that relief in core PCE and service prices too. If it remains confined to fuel, the case for broad improvement is weaker. The jobs report then helps assess how much restraint the economy can absorb.
3. Compare the announcement with expectations at that time. Update your view of market pricing closer to the meeting. Even a quarter-point hike can bring a negative surprise if the Fed signals more increases than investors expected.

Before December, write down which evidence would change your assessment of a business’s margins, financing needs or growth. That gives you a concrete way to respond to the next release, instead of treating every change in rate-hike odds as a reason to change your investment view.