How does 10y–3m differ from 10y–2y?

The 10y–3m spread is the traditional academic and New York Fed measure of yield-curve shape. The 10y–2y is more common in market commentary. Both invert before recessions; they can diverge in timing because the 3-month rate hugs the fed funds rate more closely than the 2-year.

What does a negative 10y–3m spread mean?

A positive spread (10-year above 3-month) is normal. When the spread turns negative — short-term yields above long-term — every US recession since the late 1960s has followed, typically within about 6 to 18 months.

Why do some sites still say Very High after the curve un-inverts?

Because since the 1980s the recession often starts after the curve steepens again. Cycle-based models therefore keep risk rated "very high" for about six months after un-inversion and fade it by about twelve months. Our verdict is only a z-score of the current spread; if you recently left a deep inversion, treat that hangover window as extra context beyond the headline label.

Why do researchers prefer the 10y–3m spread?

The New York Fed publishes a model that maps the 10y–3m Treasury spread into a probability that the US will be in recession 12 months ahead. That is why this particular tenor pair is often treated as the canonical recession yield-curve gauge.

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Recession

Yield curve (10y–3m)

The classic 10-year vs 3-month Treasury spread.

0.73pp

Caution

As of July 24, 2026

The Yield curve (10y–3m) is 0.73pp as of July 24, 2026. Longer-term yields sit comfortably above short-term ones — a roughly normal upward-sloping curve.

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Historical crashes marked on this chart (4)

The dashed red lines flag major US market crashes within this indicator’s history. Here is what happened at each and what followed.

Black Monday (1987): On October 19, 1987 the Dow fell 22.6% in a single day — the worst one-day drop in history — driven partly by program trading. The economy avoided recession and markets recovered within two years.
Dot-com crash (2000): The tech bubble burst in March 2000; the Nasdaq lost about 78% by 2002 as internet valuations collapsed. A mild recession followed and tech stocks took roughly 15 years to reclaim their peak.
Global Financial Crisis (2008): The subprime mortgage meltdown and Lehman Brothers' collapse cut the S&P 500 about 57% into March 2009. It triggered the Great Recession, sweeping bailouts, and a decade of near-zero interest rates.
COVID crash (2020): Pandemic lockdowns caused the fastest bear market ever in February–March 2020, a roughly 34% plunge in weeks. Unprecedented Fed and fiscal stimulus sparked a rapid recovery to new highs.

The gray line is the trend baseline; the ±2σ bands are the standard deviation bands used to assign the verdict. This gauge is inverted: a low reading can still signal overvaluation.

Overview

The 10-year minus 3-month Treasury yield spread is the classic yield-curve recession indicator — the tenor pair behind the New York Fed's recession-probability model. Normally the 10-year yield sits above the 3-month rate; when short-term yields rise above long-term ones the curve inverts, and every US recession since the late 1960s has followed within roughly 6 to 18 months — often after the curve has already un-inverted. We also publish the more market-familiar 10y–2y spread alongside it.

How to read it

A positive spread is the healthy, normal state (historically averaging a bit over 1 percentage point). As the gap shrinks toward zero, markets are pricing a flatter path for rates; below zero the curve is inverted — the classic recession warning. Deep or sustained inversions matter more than a brief dip. Crucial nuance: the recession often arrives after the spread has turned positive again, so do not treat the first months of un-inversion as an all-clear. Our verdict is an inverted z-score of today's level (low = more stressed); pair it with the cycle notes below.

The inversion cycle vs. today’s z-score

The 10y–3m spread is the classic academic gauge (and the input behind the New York Fed's recession-probability model). Same two-act story as the 10y–2y: inversion first, then un-inversion. Every US recession since the late 1960s has followed an inversion of this spread, typically within about 6 to 18 months — and in recent decades the NBER start date often lands after the spread has already turned positive again.

That is why some published models keep a "Very High" recession rating for the first ~6 months after the curve un-inverts, then gradually lower it so the inversion's influence is gone by about 12 months. They are scoring the cycle, not today's level. Our headline verdict instead asks: how many standard deviations is the live 10y–3m spread from its historical average? Negative / far-below-average readings look stressed; a spread back near ~1%+ looks calmer on that scale even if you are still inside a post-inversion window.

How to use both without mixing them up: use the chart and z-score to see how extreme the spread is right now (and to keep this gauge comparable to the rest of the site). Separately, if a sustained inversion has only recently ended, keep elevated recession caution for roughly the next two to four quarters regardless of a softer z-score. Very wide positive spreads — far above the long-run mean — have often coincided with aggressive Fed easing into or after a downturn, closer to a recovery backdrop than a late-cycle peak.

How it's calculated

This indicator is judged against a flat historical mean. The current reading is expressed as a z-score — standard deviations from that baseline.

The spread is published daily by the Federal Reserve as the difference between the 10-year and 3-month Treasury constant-maturity yields (FRED T10Y3M).
We store the daily value in percentage points and judge it against its flat historical mean with standard-deviation bands — the same presentation many valuation sites use for this series.
Because an inverted (negative) or unusually low spread is the warning, the verdict is inverted: low readings register as elevated recession / stress risk.
We do not encode a fixed post-un-inversion "Very High for N months" score into the headline; that timing rule is explained in the reading notes so you can apply it without breaking equal-weight comparability in the composite.

Criticisms

The lead time between inversion and recession is long and variable.
Quantitative easing and other non-traditional Fed policies can distort the long end of the curve, so an inversion today may not mean exactly what it meant in the 1970s–90s.
A z-score of the current spread can look calm shortly after un-inversion even though cycle-based models would still rate recession risk as high.
It is a recession signal, not a direct measure of stock valuation — and it says nothing about how severe a downturn will be.

Frequently asked questions

How does 10y–3m differ from 10y–2y?: The 10y–3m spread is the traditional academic and New York Fed measure of yield-curve shape. The 10y–2y is more common in market commentary. Both invert before recessions; they can diverge in timing because the 3-month rate hugs the fed funds rate more closely than the 2-year.
What does a negative 10y–3m spread mean?: A positive spread (10-year above 3-month) is normal. When the spread turns negative — short-term yields above long-term — every US recession since the late 1960s has followed, typically within about 6 to 18 months.
Why do some sites still say Very High after the curve un-inverts?: Because since the 1980s the recession often starts after the curve steepens again. Cycle-based models therefore keep risk rated "very high" for about six months after un-inversion and fade it by about twelve months. Our verdict is only a z-score of the current spread; if you recently left a deep inversion, treat that hangover window as extra context beyond the headline label.
Why do researchers prefer the 10y–3m spread?: The New York Fed publishes a model that maps the 10y–3m Treasury spread into a probability that the US will be in recession 12 months ahead. That is why this particular tenor pair is often treated as the canonical recession yield-curve gauge.