The Fed kept interest rates higher for months due to economic uncertainty caused by Donald Trump's tariff policies. This directly increased borrowing costs for consumers on credit cards, car loans, and variable-rate mortgages, creating a tangible financial impact from political actions.

Instead of immediately passing tariff costs to consumers, US corporations are initially absorbing the shock. They are mitigating the impact by reducing labor costs and accepting lower profitability, which explains the lag between tariff implementation and broad consumer inflation.

The Federal Reserve Chair has explicitly stated that current inflation above the target is driven by tariffs on goods. This is being masked by disinflation in the services sector, suggesting that underlying, broad-based inflationary pressures in the economy are actually quite weak.

The inflation market's reaction to tariff news has fundamentally shifted. Unlike in the past, recent tariff threats failed to raise front-end inflation expectations. This indicates investors are now more concerned about the negative impact on economic growth and labor markets than the direct pass-through to consumer prices.

The inflationary impact of tariffs is appearing slower than economists expected. Companies are hesitating to be the first to raise prices, fearing being publicly called out by politicians and losing customers to competitors who are waiting out the trade policy uncertainty.

The negative economic impact of tariffs was weaker than forecast because key transmission channels failed to materialize. A lack of foreign retaliation, a depreciating dollar that boosted exports, and a surprisingly strong stock market prevented the anticipated tightening of financial conditions.

Robert Kaplan cautions against dismissing inflation risks. Many businesses are still absorbing tariff costs or working through pre-tariff inventory. He believes the full price impact will be passed on to consumers in 2026, potentially keeping inflation stickier than markets currently expect.

The economic impact of tariffs is not an immediate, one-time price adjustment. Instead, Boston Fed President Collins characterizes it as a "long one-off" process where the full effect can take months or even a year to filter through the economy. This prolonged adjustment period extends uncertainty and complicates inflation forecasting.

Tariffs are creating a stagflationary effect on the economy. This is visible in PMI data, which shows muted business activity while the "prices paid" component remains high. This combination of slowing growth and rising costs acts as a significant "speed break" on the economy without stopping it entirely.