US Core Inflation Eases for the First Time Since July, December CPI Shows

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Key Inflation Data

The Consumer Price Index (CPI) for December revealed that core inflation, which excludes volatile food and energy prices, rose 0.2% month-over-month, down from November’s 0.3% gain. On a yearly basis, core inflation increased 3.2%, marking the first deceleration since July and breaking a four-month streak of 3.3% annual growth.

Headline CPI climbed 0.4% month-over-month, matching economists’ estimates, and rose 2.9% year-over-year, up slightly from November’s 2.7%.

Market and Federal Reserve Implications

Markets reacted positively to the softer-than-expected core inflation data:

  • The S&P 500 and Nasdaq Composite rose.
  • The 10-year Treasury yield fell 12 basis points, trading below 4.7%.

Economists believe this data will weigh heavily in the Federal Reserve’s decision at its upcoming meeting. Traders are now pricing in nearly two rate cuts by the end of 2025, with the first expected in June.

Eugenio Aleman, chief economist at Raymond James, said:
“Markets reacted positively this morning for a good reason: The Federal Reserve is okay with headline CPI increasing temporarily if it doesn’t spill over into core CPI, and this is what happened in December.”

Shelter Costs and Energy Prices

  • Shelter inflation rose 4.6% year-over-year, slightly easing from November’s 4.7%, marking the smallest 12-month increase since January 2022.
  • Gasoline prices surged 4.4% month-over-month, driving the energy index up 2.6% after a modest 0.2% gain in November.

Food Prices and Other Notables

The food index rose 2.5% year-over-year and 0.3% month-over-month, with standout increases in:

  • Egg prices (+3.2% month-over-month, +37% year-over-year).
  • Food away from home (+0.3% month-over-month).

Other notable annual increases:

  • Motor vehicle insurance (+11.3%).
  • Medical care (+2.8%).
  • Education (+4%).

Economic Context and Risks

The inflation data comes as the incoming Trump administration is set to implement policies that economists warn could reignite inflation. Proposed measures include:

  • High tariffs on imports.
  • Tax cuts for corporations.
  • Immigration restrictions.

Claudia Sahm, chief economist at New Century Advisors, noted:
“It’s good to see some progress on inflation, but the Fed remains in a ‘wait and see’ mode. Trump’s policies could further complicate the inflation outlook.”

Outlook for 2025

While the data suggests inflationary pressures are easing, the Federal Reserve remains cautious:

  • Core inflation remains above the Fed’s 2% target.
  • Economists expect ongoing volatility in inflation trends, with potential complications from fiscal policies under the Trump administration.

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