What SOFR Is and Where It Came From
The Secured Overnight Financing Rate (SOFR) is a benchmark interest rate published by the Federal Reserve Bank of New York, based on actual overnight transactions in the Treasury repurchase (repo) market — where cash is lent overnight against Treasury securities as collateral. SOFR replaced LIBOR as the standard U.S. dollar floating-rate benchmark after regulators determined LIBOR's reliance on bank estimates, rather than observable transactions, made it vulnerable to manipulation and unreliable as trading volume in the underlying interbank market declined.
Floating-rate CRE loans — bridge loans, construction loans, and many bank and debt fund loans — are now typically indexed to Term SOFR (a forward-looking rate for a set period, such as 30 days) or to daily compounded SOFR, rather than to a fixed rate.
All-In Rate: Index Plus Spread
A floating-rate loan's all-in rate is built the same way a fixed-rate loan is, just with a different base: SOFR plus a spread. The spread is where the lender's assessment of deal-specific risk shows up — property type and business plan (stabilized versus transitional), leverage, sponsor experience and balance sheet, and whether the loan is recourse or non-recourse. A lower-risk, well-leveraged stabilized asset with an experienced sponsor generally commands a tighter spread than a heavily leveraged, transitional asset with a first-time sponsor.
Why Spreads Can Widen Even When SOFR Is Flat
SOFR reflects the broad cost of short-term secured borrowing, but the spread reflects credit risk and capital markets conditions — and those two things don't always move together. In a credit-tightening environment, lenders often pull back their risk appetite, warehouse and CLO funding costs for debt funds can rise, and fewer lenders competing for deals means less pressure to tighten pricing. All of this can push spreads wider even if the central bank hasn't moved the policy rate and SOFR itself is unchanged. This is why floating-rate borrowers can see their quoted pricing move even during periods when the base rate looks stable.
Managing Floating-Rate Exposure
Because the index component of a floating rate can rise during the loan term, many floating-rate CRE loans — especially bridge and construction loans — require the borrower to purchase a rate cap, which caps the index at a specified strike rate for a fee, protecting the borrower's debt service (and the lender's DSCR covenant) from a spike in SOFR. A rate cap only protects against the index moving; it does nothing to protect against the spread widening at refinancing or maturity.
Common Drivers of Spread Width
- Leverage: higher loan-to-value or loan-to-cost generally commands a wider spread
- Business plan risk: stabilized, cash-flowing assets typically price tighter than transitional or construction deals
- Sponsor strength: track record, liquidity, and net worth relative to loan size
- Market and capital markets liquidity: spreads widen when fewer lenders are actively competing for deals
- Recourse: full or partial recourse loans often price tighter than non-recourse loans, all else equal
Floating-Rate (SOFR-Based) Loan Pricing
All-In Rate = SOFR (or Term SOFR) + Spread
- SOFR / Term SOFR
- — The base index for the applicable period — either daily compounded SOFR or a forward-looking Term SOFR rate (commonly 1-month or 3-month) (%)
- Spread
- — Margin the lender adds to compensate for credit, property, and market risk (basis points (bps))
- All-In Rate
- — Total interest rate the borrower pays for that period; resets as the index resets (%)
A floating rate is the sum of a market-wide base rate that moves on its own schedule, plus a fixed spread that was negotiated when the loan was originated. The base rate resets periodically; the spread typically stays fixed for the life of the loan.
Worked example: If 30-day Term SOFR is hypothetically 4.85% and the lender's quoted spread is 325 basis points (3.25%), the all-in floating rate for that period is 4.85% + 3.25% = 8.10%. If Term SOFR resets to 4.50% the following month, the all-in rate resets to 7.75% while the 325 bps spread stays the same.
Illustrative Floating-Rate Loan Components
| Component | What It Reflects | Who Determines It |
|---|---|---|
| SOFR / Term SOFR | The broad market cost of secured overnight borrowing | Market-driven; published daily by the Federal Reserve Bank of New York |
| Lender Spread | Property, sponsor, and market-specific risk premium | Negotiated between borrower and lender at origination |
| All-In Rate | Total interest cost paid by the borrower each period | Sum of the index and the spread; resets as the index resets |
Module Check
What does SOFR represent in a floating-rate CRE loan?