US 1Q GDP Solid, Core Inflation Set to Decline as Tariff Pass-Through Nears End

Core Conclusion

The US economy ended the first quarter of 2026 in markedly stronger shape than headline GDP suggests, with both the composition of growth and the forward-looking inflation picture pointing to a net positive macro environment. Real GDP rose 2.0% QoQ SAAR in 1Q26, but private domestic final purchases—a cleaner measure of underlying demand—grew 2.5%. The key investment implication is that core PCE inflation, which printed at 4.3% QoQ SAAR in 1Q, should decelerate meaningfully from 2Q onward as tariff pass-through reaches its terminal phase, residual seasonality flips from headwind to tailwind, and shelter costs continue to soften. This path suggests the bond market may be overpricing the persistence of inflation, while equity markets should focus on the broadening of business investment rather than the transitory consumption weakness.

Evidence Chain

GDP composition was far stronger than the 2.0% headline suggests. Business fixed investment surged 10.4% QoQ SAAR, accelerating sharply from 2.4% in 4Q25. Equipment investment rose 17.2%, driven by both AI-related computer spending (up 67.4% annualized) and a broadening into industrial equipment (up 3.9% after a -3.6% decline in 4Q). Intellectual property products expanded 13.0%, though software prices were unusually volatile—nominal software investment grew only 8.2% SAAR, while the price index fell 11.7%, inflating the real figure. Federal government reopening contributed approximately 0.7 percentage points to GDP growth. Consumption grew only 1.6% as real goods spending was flat, but this reflects tariff-driven price acceleration early in the quarter rather than demand collapse. Real goods spending picked up to +0.6% MoM in March after a flat 1Q.

Tariff pass-through is materially closer to completion than markets price. The cumulative impact of tariffs on core PCE through March is estimated at roughly 60bp. Total expected tariff impact is approximately 70bp, implying only 10bp of additional impulse remains for the rest of 2026. March core goods prices showed less pressure than the prior several months: the 0.21% MoM increase was down from 0.84% in February. Even more telling, the main driver of core goods inflation in March was computer software—a non-tariffed category—suggesting AI-related price changes rather than trade policy. The BEA’s methodology choice for legal services (using PPI instead of CPI) explains most of the March core PCE forecast error (0.29% actual vs. 0.22% MS estimate).

ECI data confirm the labor cost channel remains non-inflationary. The Employment Cost Index rose 0.9% QoQ in 1Q26, accelerating slightly from 0.7% in 4Q25, but the 12-month pace held steady at 3.4%. Given current productivity growth, this wage trajectory is consistent with unit labor cost growth below core inflation targets. Private-sector wages and salaries actually slowed to 0.7% QoQ from 0.8%. The sequential deceleration in goods inflation, combined with moderate ECI, means the Fed faces no urgency to tighten further despite the 1Q core PCE spike.

The disinflation pivot is structurally anchored. Three reinforcing factors will drive core PCE down from the 4.3% QoQ SAAR 1Q reading. First, residual seasonality that pushed up early-year inflation will flip to a downward bias in H2. Second, shelter inflation continues to soften (0.26% MoM in March vs. 0.30% last December). Third, the tariff impulse is exhausted—our models show only 10bp of remaining pass-through. The full-year q4/q4 core PCE forecast of 2.8% implies a rapid deceleration through the balance of 2026.

Key Risks

Oil shock persistence could spill into core inflation. The energy component jumped 11.56% MoM in March. If crude prices remain elevated, secondary effects on transportation services, petrochemicals, and airfares could re-accelerate core goods inflation beyond the current estimate of terminal tariff impact.

Services inflation may prove more sticky than modeled. Core services ex-housing ran at 3.44% YoY in March. Healthcare accelerated more than anticipated, and transportation services have been volatile. If the Quarterly Services Survey (due in the 2Q GDP release) reveals stronger services inflation than current estimates, the anticipated H2 deceleration could be delayed.

Residential investment weakness is understated by available data. Homebuilding fell 8.0% in 1Q26, far worse than the 0.0% estimate. The BEA lacks February and March construction spending data, meaning large revisions are possible. A deeper housing contraction would pose downside risk to growth, though it would also accelerate shelter disinflation.

The Fed’s delay risk is real. Following the 1Q inflation spike, the FOMC shifted to a more neutral stance. Rate cut expectations have been pushed to January and March 2027. If the disinflation narrative fails to materialize by 3Q, the first cut could be delayed into 2028, creating a hawkish tail risk for duration.

Macro Transmission and Investment Implications

For rates markets: The consensus appears to be extrapolating the 1Q core PCE trajectory forward. That extrapolation is wrong. The 3-month annualized core PCE of 4.43% will likely fall to the mid-3% range by mid-year and toward 2.8% by year-end. This creates a tactical opportunity to add duration, particularly in the 2- to 5-year part of the curve, where inflation risk premium is likely overpriced. The earlier view of four 2026 cuts has been replaced by two cuts in early 2027—any data that validates the disinflation thesis will accelerate repricing.

For equity markets: The composition shift matters more than the GDP headline. Business investment in equipment broadened beyond AI, with industrial equipment turning positive. This supports the capex theme beyond a narrow tech narrative. The consumption slowdown is transitory and price-driven, not demand-driven—real income growth remains positive. Sectors tied to commercial construction (data centers, power facilities) and industrial equipment benefit directly.

For currency and commodity markets: A Fed that delays cuts while disinflation takes hold should support the dollar on a real rate basis. The exhaustion of tariff pass-through removes a key source of upside inflation risk for the dollar, but the rate differential remains supportive. Commodities exposed to industrial demand (certain base metals) may benefit from the broadening equipment cycle.

Decision relevance for multi-asset investors: The 1Q data set provides a rare combination of stronger-than-implied growth and peaking inflation. This reduces the probability of either a recessionary dislocation or a stagflationary repricing. The margin of safety for risk assets is higher than the headline inflation number suggests. The tactical allocation tilt should favor overweight duration and selective overweight in industrial-focused equity sectors over broad market beta.