The Rate Engine

US mortgage spread over the 10-year Treasury

Mortgage rates track the 10-year Treasury, but not exactly. The gap between them is what lenders charge on top — and it moves for reasons that have nothing to do with the Federal Reserve.

1.81percentage points on 2026-09-10 0.04pp above the 1990–present average of 1.77pp.
30-year mortgage spread over the 10-year Treasury1990-01-052026-09-10
Table view — 220 observations
DateSpread
2026-09-101.81pp
2026-07-091.95pp
2026-05-141.89pp
2026-03-121.84pp
2026-01-081.97pp
2025-11-062.11pp
2025-09-112.34pp
2025-07-102.37pp
2025-05-082.39pp
2025-03-062.34pp
2025-01-092.25pp
2024-11-072.48pp
2024-09-052.62pp
2024-07-032.59pp
2024-05-092.64pp
2024-03-072.79pp
2024-01-042.63pp
2023-11-023.09pp
2023-09-072.85pp
2023-07-062.76pp
2023-05-043.02pp
2023-03-022.57pp
2023-01-052.77pp
2022-11-032.81pp
2022-09-012.4pp
2022-07-072.29pp
2022-05-052.22pp
2022-03-031.9pp
2021-12-301.59pp
2021-11-041.56pp
2021-09-021.58pp
2021-07-011.5pp
2021-04-291.33pp
2021-03-041.48pp
2020-12-311.74pp
2020-10-291.96pp
2020-08-272.17pp
2020-07-022.39pp
2020-04-302.59pp
2020-02-272.15pp
2019-12-261.84pp
2019-10-312.09pp
2019-08-292.08pp
2019-06-271.72pp
2019-04-251.66pp
2019-02-281.62pp
2018-12-271.78pp
2018-10-251.72pp
2018-08-231.69pp
2018-06-281.71pp
2018-04-261.58pp
2018-02-221.48pp
2017-12-281.56pp
2017-10-261.48pp
2017-08-241.67pp
2017-06-221.75pp
2017-04-271.73pp
2017-02-231.78pp
2016-12-221.75pp
2016-10-201.76pp
2016-08-251.85pp
2016-06-231.82pp
2016-04-211.71pp
2016-02-181.9pp
2015-12-241.71pp
2015-10-221.75pp
2015-08-201.84pp
2015-06-181.65pp
2015-04-231.69pp
2015-02-191.65pp
2014-12-181.58pp
2014-10-161.8pp
2014-08-211.69pp
2014-06-191.53pp
2014-04-171.54pp
2014-02-201.57pp
2013-12-191.53pp
2013-10-171.67pp
2013-08-151.63pp
2013-06-201.52pp
2013-04-181.69pp
2013-02-141.53pp
2012-12-131.58pp
2012-10-181.51pp
2012-08-161.79pp
2012-06-142.07pp
2012-04-121.8pp
2012-02-161.88pp
2011-12-152.02pp
2011-10-131.93pp
2011-08-111.98pp
2011-06-161.57pp
2011-04-141.4pp
2011-02-101.35pp
2010-12-091.38pp
2010-10-141.67pp
2010-08-121.7pp
2010-06-101.39pp
2010-04-151.21pp
2010-02-111.24pp
2009-12-101.32pp
2009-10-081.6pp
2009-08-131.7pp
2009-06-111.71pp
2009-04-091.91pp
2009-02-052.3pp
2008-12-112.83pp
2008-10-092.1pp
2008-08-072.6pp
2008-06-052.03pp
2008-04-102.33pp
2008-02-071.93pp
2007-12-061.94pp
2007-10-041.83pp
2007-08-091.8pp
2007-06-071.42pp
2007-04-051.49pp
2007-02-011.5pp
2006-12-071.62pp
2006-10-051.69pp
2006-08-031.67pp
2006-06-011.56pp
2006-04-061.53pp
2006-02-021.66pp
2005-12-011.74pp
2005-10-061.61pp
2005-08-041.5pp
2005-06-021.73pp
2005-03-311.54pp
2005-02-031.45pp
2004-12-021.41pp
2004-09-301.58pp
2004-07-291.48pp
2004-06-031.57pp
2004-04-011.61pp
2004-01-291.46pp
2003-11-281.55pp
2003-10-031.56pp
2003-08-011.7pp
2003-05-301.94pp
2003-03-281.99pp
2003-01-311.9pp
2002-11-291.91pp
2002-09-272.3pp
2002-07-261.91pp
2002-05-311.68pp
2002-03-291.76pp
2002-01-251.86pp
2001-11-302.24pp
2001-09-282.12pp
2001-07-271.9pp
2001-05-251.68pp
2001-03-301.98pp
2001-01-261.86pp
2000-11-242.1pp
2000-09-222.05pp
2000-07-282.09pp
2000-05-262.29pp
2000-03-242.03pp
2000-01-211.47pp
1999-11-261.63pp
1999-09-242.01pp
1999-07-231.68pp
1999-05-211.71pp
1999-03-261.77pp
1999-01-222.14pp
1998-11-202.04pp
1998-09-181.96pp
1998-07-241.51pp
1998-05-221.46pp
1998-03-201.51pp
1998-01-231.29pp
1997-11-211.36pp
1997-09-191.29pp
1997-07-181.23pp
1997-05-231.18pp
1997-03-211.2pp
1997-01-171.31pp
1996-11-151.4pp
1996-09-201.29pp
1996-07-191.45pp
1996-05-171.43pp
1996-03-151.37pp
1996-01-191.48pp
1995-11-171.43pp
1995-09-151.49pp
1995-07-141.26pp
1995-05-191.22pp
1995-03-171.26pp
1995-01-131.5pp
1994-11-111.21pp
1994-09-161.14pp
1994-07-151.47pp
1994-05-131.48pp
1994-03-111.17pp
1994-01-141.21pp
1993-11-121.46pp
1993-09-101.53pp
1993-07-161.45pp
1993-05-141.39pp
1993-03-121.36pp
1993-01-081.32pp
1992-11-131.5pp
1992-09-111.47pp
1992-07-101.2pp
1992-05-081.34pp
1992-03-131.17pp
1992-01-101.38pp
1991-11-081.35pp
1991-09-061.38pp
1991-07-121.38pp
1991-05-101.35pp
1991-03-081.36pp
1991-01-041.54pp
1990-11-091.6pp
1990-09-071.38pp
1990-07-061.55pp
1990-05-041.83pp
1990-03-091.64pp
1990-01-051.84pp

Why this number matters

When the spread is wide, borrowers pay more than the underlying bond market implies — lenders are pricing in risk, volatility, or weak demand for mortgage-backed securities. When it narrows, the mortgage market is functioning normally. It has ranged from 0.97pp to 3.26pp across 1,915 observations since 1990.

Because it is a difference, the spread strips out the interest-rate cycle. A mortgage rate of 6% means something completely different in 1994 than in 2026; a spread of 1.7pp means the same thing in both.

How it is calculated

Freddie Mac's 30-year survey rate minus the US Treasury 10-year constant maturity yield, on each date the mortgage series publishes. The survey is weekly and the Treasury series is daily, so each mortgage observation is paired with the most recent Treasury yield published at that time. We do not interpolate — every point is two numbers that were both real on that date.

A daily version

Freddie Mac's survey is weekly. Using Optimal Blue's daily locked-rate index instead gives a higher-frequency view of the same gap, currently 1.985pp as of 2026-09-11.

Daily locked-rate spread over the 10-year Treasury2017-01-032026-09-11
Table view — 220 observations
DateOBMMI spread
2026-09-111.985pp
2026-08-261.995pp
2026-08-112.001pp
2026-07-271.995pp
2026-07-101.951pp
2026-06-242.039pp
2026-06-081.941pp
2026-05-211.99pp
2026-05-061.979pp
2026-04-211.931pp
2026-04-032.033pp
2026-03-192pp
2026-03-041.903pp
2026-02-171.922pp
2026-01-301.806pp
2026-01-141.87pp
2025-12-292.016pp
2025-12-102.122pp
2025-11-212.164pp
2025-11-052.081pp
2025-10-212.172pp
2025-10-032.114pp
2025-09-182.146pp
2025-09-032.264pp
2025-08-182.25pp
2025-08-012.421pp
2025-07-172.304pp
2025-07-012.384pp
2025-06-122.421pp
2025-05-282.404pp
2025-05-122.362pp
2025-04-252.466pp
2025-04-102.413pp
2025-03-262.332pp
2025-03-112.329pp
2025-02-242.329pp
2025-02-062.335pp
2025-01-222.301pp
2025-01-062.255pp
2024-12-172.345pp
2024-12-022.483pp
2024-11-132.342pp
2024-10-282.471pp
2024-10-102.313pp
2024-09-252.287pp
2024-09-102.513pp
2024-08-222.562pp
2024-08-072.546pp
2024-07-232.521pp
2024-07-082.59pp
2024-06-202.6pp
2024-06-042.596pp
2024-05-172.502pp
2024-05-022.627pp
2024-04-172.59pp
2024-04-022.5pp
2024-03-182.561pp
2024-03-012.655pp
2024-02-142.561pp
2024-01-302.539pp
2024-01-122.616pp
2023-12-272.77pp
2023-12-112.769pp
2023-11-222.807pp
2023-11-032.89pp
2023-10-192.828pp
2023-10-032.785pp
2023-09-182.874pp
2023-08-312.982pp
2023-08-162.903pp
2023-08-012.878pp
2023-07-172.96pp
2023-06-292.93pp
2023-06-132.86pp
2023-05-263.05pp
2023-05-112.948pp
2023-04-262.974pp
2023-04-112.962pp
2023-03-272.839pp
2023-03-102.99pp
2023-02-232.746pp
2023-02-072.593pp
2023-01-232.671pp
2023-01-042.772pp
2022-12-162.784pp
2022-12-012.86pp
2022-11-142.82pp
2022-10-272.99pp
2022-10-123.029pp
2022-09-262.845pp
2022-09-092.633pp
2022-08-242.631pp
2022-08-092.646pp
2022-07-252.827pp
2022-07-082.739pp
2022-06-222.744pp
2022-06-062.46pp
2022-05-192.583pp
2022-05-042.595pp
2022-04-192.414pp
2022-04-042.446pp
2022-03-172.309pp
2022-03-022.225pp
2022-02-142.169pp
2022-01-281.999pp
2022-01-121.852pp
2021-12-271.864pp
2021-12-091.852pp
2021-11-221.683pp
2021-11-041.704pp
2021-10-201.621pp
2021-10-041.669pp
2021-09-171.715pp
2021-09-011.748pp
2021-08-171.794pp
2021-08-021.757pp
2021-07-161.766pp
2021-06-301.705pp
2021-06-151.651pp
2021-05-271.55pp
2021-05-121.504pp
2021-04-271.536pp
2021-04-121.575pp
2021-03-261.634pp
2021-03-111.662pp
2021-02-241.738pp
2021-02-081.658pp
2021-01-221.734pp
2021-01-061.768pp
2020-12-181.824pp
2020-12-031.883pp
2020-11-171.956pp
2020-10-301.994pp
2020-10-152.145pp
2020-09-292.233pp
2020-09-142.24pp
2020-08-272.186pp
2020-08-112.234pp
2020-07-272.358pp
2020-07-102.375pp
2020-06-242.486pp
2020-06-092.37pp
2020-05-222.589pp
2020-05-072.707pp
2020-04-222.773pp
2020-04-072.694pp
2020-03-232.681pp
2020-03-062.518pp
2020-02-202.15pp
2020-02-042.07pp
2020-01-172.039pp
2020-01-022.034pp
2019-12-162.059pp
2019-11-292.098pp
2019-11-132.117pp
2019-10-282.176pp
2019-10-092.256pp
2019-09-242.265pp
2019-09-092.139pp
2019-08-222.236pp
2019-08-072.124pp
2019-07-231.981pp
2019-07-081.98pp
2019-06-201.976pp
2019-06-052.014pp
2019-05-201.96pp
2019-05-031.911pp
2019-04-181.909pp
2019-04-031.925pp
2019-03-191.964pp
2019-03-042.003pp
2019-02-142.037pp
2019-01-302.051pp
2019-01-142.051pp
2018-12-262.089pp
2018-12-102.113pp
2018-11-231.972pp
2018-11-061.993pp
2018-10-221.96pp
2018-10-041.912pp
2018-09-191.931pp
2018-09-041.962pp
2018-08-171.988pp
2018-08-021.931pp
2018-07-181.955pp
2018-07-021.97pp
2018-06-151.924pp
2018-05-311.963pp
2018-05-151.86pp
2018-04-301.884pp
2018-04-131.904pp
2018-03-291.971pp
2018-03-131.864pp
2018-02-261.817pp
2018-02-081.809pp
2018-01-241.775pp
2018-01-081.794pp
2017-12-201.816pp
2017-12-051.887pp
2017-11-171.866pp
2017-11-011.861pp
2017-10-171.88pp
2017-09-291.843pp
2017-09-141.942pp
2017-08-291.994pp
2017-08-141.961pp
2017-07-281.949pp
2017-07-131.936pp
2017-06-272.002pp
2017-06-121.997pp
2017-05-241.985pp
2017-05-091.917pp
2017-04-242.011pp
2017-04-071.979pp
2017-03-232.006pp
2017-03-081.927pp
2017-02-211.969pp
2017-02-031.918pp
2017-01-191.979pp
2017-01-031.976pp

Sources

Source
Freddie Mac
Observation date
Retrieved

Freddie Mac, Primary Mortgage Market Survey®, retrieved from FRED, Federal Reserve Bank of St. Louis.

Source disclaimer

Data are provided "as is" by Freddie Mac®, with no warranties of any kind, express or implied, including but not limited to warranties of accuracy or implied warranties of merchantability or fitness for a particular purpose. Use of the data is at the user's sole risk. Copyright, 2016, Freddie Mac. Reprinted with permission.

Full terms

Source
U.S. Department of the Treasury
Observation date
Retrieved

U.S. Department of the Treasury, Daily Treasury Par Yield Curve Rates.