A negative swap spread (swap rate below the matching-tenor Treasury) has been the normal long-end SOFR-swap condition, driven by dealer balance-sheet cost and a near-risk-free floating leg. It is not, by itself, a funding-stress signal. When the swap rate sits below the matching Treasury, bank perm priced over swaps can be relatively cheaper than life-co perm priced over Treasury.
Why swap spreads invert and what it means for sponsor selection
A negative swap spread has been the normal long-end SOFR-swap condition, driven by dealer balance-sheet cost and a near-risk-free floating leg. It is not, by itself, a funding-stress signal. Standard swap spreads are not positive merely because of counterparty credit risk.
Swap-priced bank perm (priced as swap rate plus spread) becomes cheaper in absolute terms when swap spreads invert. Treasury-priced life-co perm (priced as Treasury plus spread) is unaffected. The relative-value calculation between bank perm and life-co perm can flip during inversion periods.
A negative long-end swap spread has been a normal post-2020 condition, not a standalone signal of funding stress. Sponsors with active perm placements should monitor swap spreads alongside Treasury and SOFR.
Sources
- Secured Overnight Financing Rate (SOFR) · Federal Reserve Bank of New York · daily
- Treasury Constant Maturity Series (DGS5, DGS10) · Federal Reserve Bank of St. Louis (FRED) · weekly
- Daily Treasury Par Yield Curve Rates · U.S. Department of the Treasury · daily
- Financial Stability Report · Board of Governors of the Federal Reserve System · 2025-11