Treasuries: Yields Surge Ahead of March FOMC
Key Takeaways
- The 10-year Treasury yield surged 30 basis points to 4.27% in two weeks as the Iran oil shock revived inflation fears ahead of the March 18 FOMC meeting.
- The Fed's 175 basis points of cuts since March 2025 now look premature — the bond market is pricing out further easing and beginning to consider the next move could be a hike.
- Short-duration Treasuries and TIPS offer better risk-adjusted positioning than long bonds until geopolitical uncertainty and the Fed's rate path become clearer.
The 10-year Treasury yield hit 4.27% on March 12 — up 30 basis points in two weeks — as the Iran conflict sent oil prices spiraling and revived inflation fears the market thought it had buried. The 30-year bond pushed to 4.88%, its highest since late 2024, while even the 2-year note jumped to 3.76% as traders repriced the Fed's cutting path.
This selloff has a different character than the rate-tantrum episodes of 2023-24. Back then, yields rose on hot growth data and hawkish Fed rhetoric. This time, the catalyst is a genuine supply shock — crude oil surging from $72 to over $90 per barrel since U.S.-Israeli strikes on Iran began February 28. The bond market is telling you something: the Fed's 175 basis points of rate cuts since March 2025 may have been premature, and the next move higher in yields could stick.
With the FOMC meeting on March 18 just days away, Chair Powell faces an unenviable choice: acknowledge the inflation risk and spook markets, or downplay it and lose credibility. Either way, Treasury holders should brace for volatility.
Yield Landscape: 30 Basis Points in Two Weeks
The speed of the March yield spike is what stands out. On February 27, the 10-year sat at 3.97%. By March 12, it closed at 4.27% — a 30-basis-point move that wiped out weeks of gains for bondholders.
The entire curve shifted higher:
- 2-year note: 3.38% → 3.76% (+38 bps)
- 10-year note: 3.97% → 4.27% (+30 bps)
- 30-year bond: 4.64% → 4.88% (+24 bps)
Treasury Yields — March 2026
The 10Y-2Y spread narrowed slightly to 0.51% on March 12, down from 0.59% a week earlier. The front end moved faster than the long end — a sign the market is questioning near-term Fed policy more than long-run equilibrium rates. When 2-year yields spike 38 basis points while the 10-year gains 30, traders are pricing out rate cuts, not pricing in a structural inflation regime.
The average interest rate on total marketable U.S. debt stood at 3.355% as of February 28, according to Treasury Department data. With new issuance repricing higher, the government's interest expense trajectory just got steeper.
The Iran Oil Shock Changes Everything
Forget the soft-landing narrative. Crude oil surging from $72 to over $90 per barrel since the U.S.-Israeli strikes on February 28 is the kind of exogenous shock that rewrites economic forecasts overnight.
The bond market saw it immediately. The 10-year yield jumped from 4.05% on March 2 to 4.06% the next day, then accelerated through the week as the conflict showed no signs of de-escalation. Iran's IRGC has threatened to push prices to $200 per barrel by restricting Strait of Hormuz traffic — a scenario that would make the 1970s oil crises look modest.
Mortgage rates have already responded, surging to their highest since September. Higher energy costs feed into transportation, manufacturing, and food prices with a 2-3 month lag. By the time the June CPI print arrives, the Iran premium will be embedded in the data.
The February CPI index reading of 327.46 represented a year-over-year increase of roughly 2.4% — close enough to the Fed's target to justify patience. That number is about to look stale. Every $10 increase in crude adds approximately 0.3-0.4 percentage points to headline CPI over the following quarter. A sustained move above $100 per barrel could push headline inflation back toward 3% by summer.
The Fed's 175 Basis Points of Cuts Look Premature
Between March 2025 and January 2026, the Federal Reserve cut the fed funds rate from 4.33% to 3.64% — 175 basis points of easing delivered across multiple meetings. At the time, each cut seemed justified: inflation was falling, the labor market was softening, and financial conditions needed relief.
Now the bond market is second-guessing the entire sequence.
The Fed held rates steady at 3.64% in both January and February 2026. CME FedWatch data showed virtually zero probability of a cut at the March 18 meeting even before the Iran escalation. After it, the market began pricing a non-trivial probability of the next move being a hike, not a cut.
This is the trap supply shocks create. The Fed cut into what looked like a disinflationary trend, then an external event reversed the inflation trajectory. Raising rates now would crush an economy already absorbing higher energy costs. Holding steady while inflation accelerates erodes credibility.
The January FOMC minutes, released in February, showed officials already worried about sticky services inflation and resilient consumer spending. Those concerns have only intensified. The dot plot at the March 18 meeting will be watched more closely than Powell's press conference — if the median 2026 rate projection shifts higher, yields will extend their rally.
Fiscal Backdrop: $36 Trillion and Counting
Rising yields compound an already dire fiscal picture. The average interest rate on total U.S. interest-bearing debt hit 3.32% in February 2026, up from pandemic-era lows. With federal debt exceeding $36 trillion, each basis point higher in borrowing costs translates to billions in additional annual interest expense.
Treasury Bills carried an average rate of 3.72% in February, while Notes averaged 3.19% and Bonds 3.38%. As shorter-duration debt rolls over at current market yields — the 2-year now at 3.76%, the 10-year at 4.27% — the blended cost of government borrowing will ratchet higher through 2026.
Avg Interest Rates on U.S. Debt (Feb 2026)
The Congressional Budget Office projected net interest costs exceeding $1 trillion annually by 2026. That projection assumed rates would fall as the Fed cut. Instead, the long end of the curve is climbing, and the government's funding needs are not shrinking. Treasury auctions have shown growing signs of indigestion — the recent 20-year bond auction drew lackluster demand, contributing to the yield spike.
Foreign holders, particularly Japan and China, have been gradually reducing Treasury holdings. Domestic buyers must absorb the slack, and they're demanding higher yields to do it.
Investor Positioning: Duration Risk Is Real
For bond investors, the message is straightforward: duration is the enemy right now.
A portfolio holding 10-year Treasuries bought at 3.97% two weeks ago has already lost roughly 2.4% in mark-to-market value. Holders of 30-year bonds have fared worse. The move from 4.64% to 4.88% on the long bond translates to a price decline of approximately 4.5% — in two weeks.
Short-duration positioning makes sense until the Iran situation resolves or the Fed signals definitively. Treasury bills and 1-2 year notes offer yields above 3.7% with minimal price risk. The front end of the curve still reflects Fed policy; the long end reflects inflation uncertainty, fiscal supply, and geopolitical risk — three forces that all point higher.
TIPS deserve attention. With breakeven inflation rates climbing, inflation-protected securities offer a hedge that nominal Treasuries cannot. The average TIPS rate of 0.99% looks modest, but real yields above zero represent genuine purchasing-power preservation in an environment where headline inflation may re-accelerate.
The worst-case scenario for bond bears: oil breaks $100, the March FOMC dot plot shifts hawkish, and the 10-year tests 4.50%. The best case: a ceasefire in Iran, oil retreats below $80, and the Fed keeps its easing bias. Positioning should reflect the asymmetry — the downside in bonds is larger than the upside until one of those catalysts materializes.
Conclusion
The Treasury market is repricing for a world the Fed hoped it had left behind. Oil above $90, inflation expectations rising, and a central bank trapped between cutting too much and tightening too late — this is the macro environment that produces sustained yield increases, not temporary spikes.
The March 18 FOMC meeting will set the tone for Q2. If the dot plot acknowledges the inflation risk from energy prices, expect the 10-year to push toward 4.40-4.50%. If the Fed dismisses it as transitory (again), the market will do the tightening itself through higher long-term rates. Either path leads to higher yields in the near term. Bond investors should stay short duration, consider TIPS for inflation protection, and wait for clarity before extending maturity risk.
Frequently Asked Questions
Sources & References
www.federalreserve.gov
www.cnbc.com
www.cmegroup.com
www.federalreserve.gov
Disclaimer: This content is for informational purposes only and does not constitute financial advice. Consult qualified professionals before making investment decisions.