What is yield curve?

The yield curve is a graph plotting interest rates of U.S. Treasury securities across different maturities, from 1-month bills to 30-year bonds. Normally upward-sloping (longer terms pay more), an inverted yield curve — where short-term rates exceed long-term rates — has preceded every U.S. recession since 1955 with only one false signal, making it one of the most reliable recession predictors and an early warning of the financial distress cascades the American Distress Index tracks.

Photo of Ross Kilburn

Updated

Key facts

  • A March 2018 study found that the delay between the Treasury yield spread turning negative and the beginning of a recession had ranged from 6 to 24 months.
  • A March 2018 study found that an inverted yield curve had preceded all nine U.S. recessions since 1955, with only one false signal in the mid-1960s, when an inversion was followed by an economic slowdown but not an official recession.
  • The mechanism: when markets expect economic weakness, investors buy long-term bonds (pushing long-term yields down) while the Fed keeps short-term rates high to fight inflation — the resulting inversion signals that markets expect the Fed will eventually need to cut rates aggressively.
  • The yield curve affects banks directly — banks borrow short-term (deposits, interbank) and lend long-term (mortgages, business loans). An inverted curve compresses or reverses this 'net interest margin,' making lending less profitable and tightening credit availability for households.
  • The 3-month/10-year spread is the New York Fed's preferred recession predictor — their model uses this spread to generate a recession probability that has historically risen above 30-40% before recessions begin, providing 6-18 months of advance warning.

Related data

How Does the Yield Curve Work?

Treasury securities are the foundation of the U.S. financial system. The yield curve plots their interest rates by maturity:

  • Short-term (1-month to 2-year): Heavily influenced by the current federal funds rate and near-term Fed policy expectations. When the Fed raises rates, short-term yields rise quickly.
  • Medium-term (3-year to 7-year): Reflect expectations of where the Fed will be in coming years, inflation expectations, and economic outlook.
  • Long-term (10-year to 30-year): Driven by long-run growth expectations, inflation expectations, and the 'term premium' (extra yield investors demand for locking up money longer).

A normal yield curve slopes upward — investors demand higher yields for longer maturities to compensate for inflation risk and opportunity cost. A flat curve suggests economic uncertainty. An inverted curve (short rates above long rates) signals that markets expect economic weakness and future rate cuts.

Why Does Inversion Predict Recessions?

The yield curve inverts through a specific economic mechanism:

  1. Fed tightens: The Fed raises short-term rates to cool inflation, pushing up the short end of the curve.
  2. Markets expect slowdown: Bond investors, anticipating that higher rates will slow the economy, buy long-term bonds as a safe haven — pushing long-term yields down.
  3. Curve inverts: Short-term rates (set by current Fed policy) exceed long-term rates (set by market expectations of future weakness).
  4. Credit tightens: Banks' net interest margin compresses, making lending less profitable. Banks tighten lending standards — the Fed's Senior Loan Officer Opinion Survey (SLOOS) typically shows tightening during inversions.
  5. Real economy impact: Reduced credit availability can slow business investment, hiring, and consumer spending, contributing to an economic slowdown.

This creates a partially self-fulfilling dynamic: the inversion both predicts and contributes to the slowdown through the credit channel.

The Current Yield Curve and Recession Risk

The 2022-2024 inversion was historically significant:

  • The 2-year/10-year spread inverted in July 2022 and reached -108 basis points — the deepest inversion since the early 1980s
  • The inversion lasted over 25 months — one of the longest on record
  • A March 2018 study found that the delay between the Treasury yield spread turning negative and the beginning of a recession had ranged from 6 to 24 months.
  • The curve has begun to normalize (un-invert) — historically this is when recession risk is highest, not during the inversion itself

Yield Curve and the American Distress Index

The yield curve is an upstream signal that feeds into the ADI through several channels. When the curve inverts and banks tighten lending, credit becomes harder for households to obtain. Credit tightening reduces refinancing options for distressed borrowers, accelerating the path from buffer depletion to delinquency. Tighter credit conditions can limit refinancing options while delinquency is rising, but this glossary entry does not treat that mechanism as a validated ADI lead model.

Questions about yield curve

Is the yield curve inverted right now?

As of early 2026, the yield curve has largely un-inverted after being inverted for over 25 months (July 2022 through late 2024). The 2-year/10-year spread is near zero to slightly positive. Historically, the un-inversion (steepening) is when recession risk peaks — it typically means the economy is weakening enough that markets expect imminent rate cuts.

How long after inversion does a recession start?

Historically, recessions have begun 6-24 months after the initial inversion, but the timing varies significantly. The more relevant signal may be the un-inversion: recessions tend to start within 0-12 months after the curve returns to positive. The lag depends on how aggressive the Fed's tightening was and how much economic momentum exists.

Can the yield curve give a false signal?

In the post-WWII era, there has been one arguable false signal — the 1966 inversion preceded a significant economic slowdown and credit crunch but not an official NBER-designated recession. Some economists argue that quantitative easing (QE) may have distorted long-term yields, potentially affecting the signal's reliability.

How does the yield curve affect my mortgage rate?

Mortgage rates closely track the 10-year Treasury yield plus a spread (typically 1.5-2.5 percentage points). When the long end of the curve falls (during inversion), mortgage rates can actually decline even as short-term rates rise. When the curve steepens, mortgage rates tend to rise. The spread between mortgage rates and Treasuries also varies with market stress.

How does the yield curve connect to the American Distress Index?

The yield curve is an upstream recession signal. When it inverts, banks tighten lending, which makes credit harder for households to obtain and eventually shows up in the ADI's Delinquency domain. Tighter credit reduces refinancing options for distressed borrowers, accelerating the path from buffer depletion to delinquency. The ADI tracks the downstream effects of yield curve signals through its five equal-weighted domains.

Related terms

  • Federal Funds RateThe interest rate banks charge each other for overnight loans, which the Federal Reserve steers into a target range it sets.
  • Interest RateThe cost of borrowing, expressed as a percentage of the principal for a stated period. Household loan rates are priced in their own markets.
  • RecessionA significant, economy-wide decline in activity lasting more than a few months, as dated by the National Bureau of Economic Research's committee.
  • InflationA rise in the overall level of prices over time.
  • Gross Domestic Product (GDP)Gross domestic product (GDP) measures the value of final goods and services produced in the United States during a period.
  • Adjustable-Rate Mortgage (ARM)A mortgage whose interest rate changes on scheduled adjustment dates under the loan agreement.
  • Mortgage-Backed Securities (MBS)Investment bonds created by pooling thousands of home loans. Investors receive homeowners' monthly payments as returns. Central to how mortgages are funded in the U.S.
  • Financial DistressDifficulty meeting financial obligations with available income and resources.

Sources and method

We write with assistance from AI tools. Figures come from the data and sources named on this page.