The 10-year Treasury yield sits at 4.69% while the 30-year mortgage rate is 6.65%, producing a 1.96% spread as of August 24, 2026.
As of the most recent FRED release (August 20, 2026), the 10-year Treasury yield closed at 4.69% and the 30-year fixed mortgage rate averaged 6.65%, resulting in a 1.96-percentage-point spread. The 15-year mortgage stood at 5.95%, 1.26 points above the same Treasury benchmark.
Over the past twelve months the 10-year note has traded in a narrow band just below 4.20%, according to MBA Newslink. Despite that stability, the mortgage spread has widened. In March 2026 the 10-year briefly spiked above 4.70% after an unexpected inflation print, pushing the spread above 2.00% for the first time since late 2023. Since then the spread has eased only modestly; the latest 1.96% reading remains roughly 40 basis points wider than the long-term average of 1.55%.
1. Risk Premium Expansion: Lenders continue to price in higher credit, prepayment, and liquidity risk after the 2023 banking-sector stress. Fannie Mae notes that investors now demand an extra 25–30 basis points relative to pre-pandemic levels.
2. Servicing and Regulatory Costs: Ongoing CFPB and Basel III-related expenses are capitalized into mortgage pricing, adding another 10–15 basis points.
3. Fed Policy Path: Markets have repriced the federal-funds rate to remain between 3.5% and 4.0% through year-end 2026, reducing the likelihood of a sharp drop in long-term yields.
The Federal Reserve’s H.15 Selected Interest Rates release for August 21, 2026 shows the following daily closes:
| Maturity | Aug 15 | Aug 18 | Aug 19 | Aug 20 | Aug 21 |
|---|---|---|---|---|---|
| 10-year | 4.68% | 4.72% | 4.71% | 4.65% | 4.69% |
| 20-year | 5.25% | 5.30% | 5.28% | 5.17% | 5.20% |
| 30-year | 5.25% | 5.31% | 5.28% | 5.19% | 5.23% |
The 10-year yield’s five-day range of 7 basis points underscores the low-volatility regime that has kept mortgage rates anchored near 6.65%.
While national averages dominate headlines, state-level pricing can diverge. In California, where average credit scores skew higher, the 30-year conforming rate was 6.54% on August 20—11 basis points below the national figure. Conversely, Texas posted 6.78%, reflecting a larger share of cash-out refinances. These differentials are driven more by originator mix and loan-purpose composition than by Treasury movements.
A 1.96% spread means that for every 10-basis-point decline in the 10-year Treasury, the average borrower can expect only a 6–7 basis-point improvement in the 30-year mortgage quote, assuming the spread holds constant. Conversely, any re-widening—say, to 2.20%—would erase the benefit of a Treasury rally.
Homeowners evaluating rate-and-term refinances should therefore model scenarios in which the spread remains above 1.80%. You can run live scenarios at HomeRates.ai to see how different spread assumptions affect monthly payments and break-even periods.
MBA’s 2026 forecast keeps the 10-year Treasury between 4.10% and 4.30%. If the spread compresses back toward its long-term mean of 1.55%, the 30-year mortgage rate could fall to the mid-5% range without any further decline in Treasury yields. However, persistent fiscal-supply concerns and regulatory costs suggest the spread may settle closer to 1.75%–1.85%—still historically wide.
The 10-year Treasury mortgage rate spread stands at 1.96% as of August 24, 2026. Until that gap narrows meaningfully, mortgage rates will remain disproportionately high relative to Treasury benchmarks, and borrowers should underwrite at today’s 6.65% level rather than hoping for a quick reversion.
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