Mortgage Spread: Latest Reading, Historical Chart & Investor Guide

Indicator Snapshot

What Mortgage Spread Measures

Mortgage-Treasury Spread measures the premium of 30-year mortgage rates over Treasury yields. The indicator is published by Freddie Mac and U.S. Department of the Treasury on a weekly basis and is one of the primary datasets used by investors and economists to monitor this area of the economy.

The difference, in percentage points, between the average 30-year fixed mortgage rate from Freddie Mac's Primary Mortgage Market Survey and the 10-year Treasury yield. It shows the premium borrowers pay over a Treasury benchmark.

Why Investors Watch Mortgage Spread

The spread captures mortgage credit and prepayment risk and funding costs beyond the Treasury yield, which is why mortgage rates do not always move one for one with Treasuries. It is watched in housing finance, mortgage-backed securities and discussions of Fed agency MBS policy.

The indicator's impact on financial markets depends on multiple factors: whether the reading was expected, the current economic regime, central bank policy stance, and investor positioning. A single data point is rarely sufficient to draw firm conclusions.

How Mortgage Spread Is Calculated

It is computed by subtracting the weekly 10-year Treasury constant maturity yield from Freddie Mac's weekly average 30-year fixed rate. Because it is derived rather than published as a single official series, the exact Treasury series and timing used can differ slightly between sources.

The official methodology documentation from Freddie Mac and U.S. Department of the Treasury describes the full calculation process including sample design, weighting and revision procedures.

Reference: Freddie Mac and U.S. Department of the Treasury: Mortgage Spread data and methodology

Release Schedule and Revisions

Mortgage Spread is typically released weekly by Freddie Mac and U.S. Department of the Treasury. Release dates are announced in advance through the official release calendar. Investors should monitor both the scheduled release dates and any unscheduled revisions.

Published values in this series are generally not revised after release. The publisher notes any correction or methodology change in its release documentation.

How to Interpret Mortgage Spread Changes

When analyzing Mortgage Spread data, investors should consider multiple dimensions simultaneously:

• A wider spread means mortgage borrowers are paying more over Treasuries, which can reflect higher rate volatility, weaker investor demand for mortgage securities or tighter credit.
• Over long stretches the spread has averaged roughly 1.5 to 2 percentage points, with wider readings in stressed or volatile periods. Compare it with that range.
• Mortgage rates can lag a sharp Treasury move, so the spread can narrow or widen briefly for timing reasons rather than any change in credit conditions.

Market Impact of Mortgage Spread

Mortgage Spread can influence multiple asset classes depending on its implications for economic growth, inflation, and monetary policy:

• Equities: Changes in Mortgage Spread can affect earnings expectations, discount rates and sector rotation preferences.
• Fixed income: The indicator may influence Treasury yields and credit spreads depending on its monetary policy implications.
• Currency markets: Divergence in Mortgage Spread across economies can affect relative currency valuations.
• Commodities: Economic activity indicators can affect commodity demand expectations and prices.

Historical Context

Mortgage-Treasury Spread has a long history that provides context for interpreting current readings. Key reference points include major economic cycles, recessions, recovery periods and policy regime changes. Historical comparison helps investors avoid placing excessive weight on any single data point outside its longer-run context.

Investors should be aware that methodology changes over time can affect comparability across long historical periods. The official Freddie Mac and U.S. Department of the Treasury documentation will note any significant definitional or methodological changes.

Limitations of Mortgage Spread

Like all economic indicators, Mortgage Spread has limitations that investors should understand before drawing conclusions:

• It is derived from two sources that differ in timing and measurement, since Freddie Mac reports a weekly survey and the 10-year yield is a market price, so small differences are artifacts.
• The 10-year is a rough proxy for mortgage duration, and prepayment behavior changes the effective maturity, so the spread can shift when refinancing activity changes.
• No single indicator captures the full complexity of economic conditions, so read this series next to the ones linked below.

Related Economic Indicators

Mortgage Spread is best interpreted alongside related indicators that provide complementary perspectives on the premium of 30-year mortgage rates over Treasury yields. Confirming or diverging signals across related indicators help investors form more robust views of the economic environment.

• 30-Year Mortgage Rate
• 10-Year Treasury Yield
• Mortgage Applications
• Fed Balance Sheet

See the Monetary Policy And Rates indicators section and the Macro & Market Regimes hub for broader context and related data.