Fed Policy Regime

THE INPUTS AND WHAT THEY MEAN. The federal funds rate is the overnight rate on unsecured loans of reserve balances between banks. The FOMC sets a TARGET RANGE for it; the effective federal funds rate is a market outcome within that range, steered by administered rates such as interest on reserve balances. So the target range is the policy instrument and the effective rate is the result of implementing it - a distinction worth keeping, because they are not the same number.

INFLATION. The FOMC's 2% objective is defined on the overall PCE price index. CORE PCE excludes food and energy - the two most volatile components - and is one of the measures policymakers use to read the underlying trend, not the formal target. CPI is a separate index built on a different basket and weighting method, which is why CPI and PCE inflation routinely differ by several tenths and must be read as two measures rather than one.

YIELDS. The 2- and 10-year Treasury yields are market-determined RATES implied by bond prices. Both reflect expected future short rates over their horizon plus a term premium - compensation for bearing duration risk. The 2-year is especially sensitive to the expected near-term policy path; the 10-year also carries expectations and risk compensation over a much longer horizon.

THE YIELD CURVE. The 2s10s spread is the 10-year yield less the 2-year. When it is negative that segment is INVERTED. Read the interpretation carefully, because this is one of the most over-read relationships in macro: an inversion is consistent with the market expecting future short rates to fall, and it is ALSO consistent with a change in term premia, so it does not identify expectations uniquely. In postwar US data several curve measures, 2s10s among them, preceded many recessions - but not every inversion was followed by one, and lead times have ranged from months to over two years. The Federal Reserve Bank of New York's published recession-probability model uses the 10-year minus 3-month spread rather than 2s10s, which is a useful reminder that the choice of maturity pair changes the result.

WHY TIGHTENING/EASING/PAUSE IS A DISCRETISATION. Policy is a continuum of rate level, direction, pace and communicated intent. Three labels compress all of that, so the boundary between 'pause' and 'easing' is a choice about where a threshold sits, not an observation.

THE PART WORTH LEARNING MOST. This analysis SKIPS when its macro data is unavailable or stale. It never falls back on a model's own recollection of the rate path, dot plot and Fed tone: such a reply would be non-deterministic, unauditable, silently stale against a training cutoff, and rendered identically to a data-computed one, so a reader could not tell them apart. A model's memory of a rate path is a snapshot of when it was trained; the rate path moves. Refusing to answer without current data is the correct behaviour for a research instrument, and a student should recognise it as a strength rather than a gap.