Compare compatible instruments
An upward-sloping curve has higher longer-maturity yields than shorter ones across the specified comparison. An inverted segment has the opposite relationship. A curve can also be flat or have different slopes in different sections. Saying the curve inverted is incomplete without identifying the maturities.
A Treasury curve and a corporate curve need not be interchangeable. Credit quality, tax treatment and instrument construction can differ. The comparison is clearer when it holds those features as steady as possible.
Calculate the sign explicitly
Imagine a fictional ten-year yield of 4.2% and a two-year yield of 4.6%. The ten-year-minus-two-year spread is −0.4 percentage points, or −40 basis points. Reversing the subtraction would produce +40 basis points, so the order must be labeled.
Now suppose the ten-year yield stays 4.2% while the two-year falls to 4.0%. The spread becomes +20 basis points. That steepening came from a lower short yield, not a rising long yield. Different movements can create similar changes in a slope measure.
A slope summarizes several forces
Longer yields incorporate expectations about future short rates and additional compensation for holding longer-duration exposure, among other influences. A curve movement should therefore not be translated mechanically into one single explanation.
The New York Fed’s published recession-probability model uses a specific ten-year-minus-three-month term spread. It is a model with a stated horizon, not an official recession forecast or a substitute for examining the broader economy. Another maturity pair is not automatically the same input.
A warning signal has no guaranteed timetable
A historical association between inversion and later weakness does not guarantee a recession on a particular date. Model estimates depend on data, specification and changing conditions. A curve returning to positive slope does not by itself establish that economic risk has disappeared.
When reading a headline, identify the maturity pair, observation date and whether the statement describes a level, change or probability. Then separate that evidence from the writer’s broader view. Yield curves are useful because they organize market information, not because they eliminate uncertainty.
The ten-year yield is 4.5% and the two-year yield is 4.0%. What is the ten-year-minus-two-year spread?
Show the explanation
Positive 0.5 percentage points, or +50 basis points. It is not an inverted spread for that maturity pair.
Sources and editorial notes
Original explanations and hypothetical examples prepared with AI assistance. Primary references checked October 16, 2026. Numerical examples are hypothetical unless explicitly identified otherwise.
- New York Fed: Yield Curve as a Leading Indicator
Specific term-spread model, twelve-month horizon and forecast limitations.