Trepp | August 2026 Rates and Spreads: Tight Spreads Amid Treasure Volatility

With commercial real estate (CRE) loans continuing to reach final maturities and some facing more difficult refinancing conditions, movements in rates and spreads remain important for the near-term financing outlook.

In August, Treasury yields ended only modestly higher despite substantial volatility, while Trepp-i balance sheet lending spreads remained tight. Trepp-i is a weekly spread survey that offers insights into capital availability and underwriting trends across the major property types, with data going back to 2010.  Commercial mortgage-backed securities (CMBS) secondary spreads tightened noticeably across bond ratings. For CRE, elevated benchmark rates keep borrowing costs high, partially cushioned by tight balance sheet lending spreads and tighter CMBS pricing, though both continue to face risk from the same macroeconomic volatility.

Significant Volatility for Treasuries

The Treasury curve moved modestly higher in August following the significant rise in long-term yields over July. The modest net moves masked significant volatility within the month. Long-term yields rose into mid-August on concerns of persistent inflation, large federal borrowing needs, and heavy corporate bond issuance competing for funds. The Treasury Department announced a significant expansion of its buybacks of long-dated securities, prompting a sharp decline in long-term yields that was only partly sustained. Late in the month, pressure shifted toward shorter and intermediate maturities. A more hawkish than expected speech from Federal Reserve Chair Kevin Warsh increased expectations for a near-term rate increase, pushing those yields higher.

August therefore combined two different rate moves. Long-term yields came under pressure first on inflation, fiscal, and supply concerns. Later, changing expectations for Federal Reserve policy pushed shorter and intermediate yields higher, leaving the curve only modestly higher and somewhat flatter by month end.

Balance Sheet Lending Spreads Remain Tight

Despite volatility in the Treasury market, balance sheet lending spreads were essentially unchanged in August and remained tight. Table 1 shows that Trepp-i balance sheet lending spreads moved by 3 basis points or less over the month across property types, indicating little change in lender pricing from already compressed levels. Retail saw the largest move at roughly 3 basis points tighter. Industrial, multifamily, and office each tightened about 1 basis point.

This is consistent with continued competition among lenders as banks and alternative lenders remain active in CRE financing. That competition is broad-based as banks, debt funds, and insurance companies have expanded CRE lending volume over the past year. Banks have also stepped up financing to debt funds directly, increasing non-bank lending capacity. With multiple capital sources competing for the same pool of deals, pricing has stayed compressed even as Treasury yields moved.

CMBS Secondary Spreads Drift Noticeably Lower

CMBS secondary spreads tightened broadly across ratings, with the largest moves in the lower-rated tranches. Figure 2 shows that BBB-, BBB, and A tightened the most at around 30 basis points, while AA tightened by 19 basis points and AAA spreads moved 2-4 basis points lower.

The concentration in lower-rated tranches suggests investors are reaching further down the credit stack for yield. With corporate bond spreads also sitting near historic tights, the extra spread on lower-rated CMBS looks more attractive by comparison, pulling in demand from investors seeking yield elsewhere.

What This Means for CRE

For balance sheet lending, August largely preserved the tight pricing environment already in place, despite volatility in Treasury yields. However, the same macroeconomic forces that created Treasury yield volatility also increase the risk that these tight spreads could widen. For the CMBS market, tighter CMBS secondary spreads can support more competitive CMBS loan pricing and terms. For borrowers approaching refinancing, elevated Treasury yields keep fixed-rate borrowing costs high, with risk that benchmark rates could drift higher. Tight lending spreads partially cushion elevated benchmark rates, while macroeconomic volatility introduces risk that could bring borrowing costs higher.

The Bottom Line

August ended with Treasury yields little changed on net despite substantial volatility, while balance sheet lending spreads remained tight. The clearer shift came in CMBS secondary markets, where spreads tightened broadly across risk tiers. For CRE, borrowing costs remained elevated due to elevated benchmark rates, partially cushioned by tight lending spreads, with both still exposed to the same underlying volatility.

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