SOFR

Definition: SOFR, the Secured Overnight Financing Rate, is the benchmark index for floating-rate commercial real estate debt in the United States. Published daily by the Federal Reserve Bank of New York, it measures the cost of borrowing cash overnight collateralized by Treasury securities, based on a deep pool of actual repurchase transactions. SOFR replaced LIBOR as the market standard after LIBOR's 2023 cessation, and floating-rate CRE loans are quoted as SOFR plus a credit spread.
All-In Floating Rate = Term SOFR (or Daily SOFR) + Credit Spread

SOFR in Practice

A $10,000,000 bridge loan is priced at SOFR plus 350 basis points. If 1-month Term SOFR is 4.00% at the start of an interest period, for illustration, the all-in rate is 4.00% + 3.50% = 7.50%, and that month's interest-only payment is $10,000,000 x 0.075 / 12 = $62,500. If SOFR resets to 4.25% the following month, the all-in rate becomes 7.75% and the payment rises to $10,000,000 x 0.0775 / 12 = $64,583.33.

SOFR: What the Market Actually Requires

SOFR pricing shows up wherever CRE debt floats: bridge loans, debt fund paper, bank construction and transitional loans, and the floating tranches of larger capital stacks. The operative index for most CRE loans is 1-month Term SOFR, a forward-looking rate published by CME, rather than the daily compounded averages more common in corporate credit. Because SOFR is secured by Treasury collateral, it is a nearly risk-free rate and runs structurally below where LIBOR, an unsecured bank rate, would have printed; legacy loans that converted at LIBOR's cessation picked up a fixed spread adjustment to compensate.

Two loan terms travel with SOFR on every floating deal. The first is the floor: lenders set a minimum index level, frequently at or near the index level at closing on new originations, so their coupon cannot ride a rate rally downward. The second is the interest rate cap, which most floating-rate lenders require the borrower to purchase from a third-party provider. The cap pays out when the index exceeds a strike price, limiting the borrower's exposure; its upfront cost scales with the strike level, the notional amount, and the term, and cap pricing swings dramatically with rate volatility. Loan documents typically require replacement caps as a condition of extension options, and servicers escrow monthly for the replacement cost, a cash drag sponsors routinely forget to model.

The underwriting discipline is to stress the deal at the cap strike, not at the current index. A bridge loan that covers comfortably at today's SOFR but breaks even at the strike is a deal that only works if rates cooperate. Sophisticated sponsors also negotiate the interplay between terms: a low floor is worth little if the spread is wide, and a cheap cap at a high strike protects the lender's collateral more than the borrower's cash flow.

Why It Matters for Your Loan

Every floating-rate dollar in a capital stack reprices with SOFR monthly, so the index drives cash flow, DSCR covenants, extension tests, and the real cost of the required rate cap. On a $10,000,000 bridge loan, each 100 basis points of index movement changes annual interest by $10,000,000 x 1% = $100,000. Commercial Lending Solutions structures floating-rate requests around the full package, spread, floor, cap strike, and cap cost, because lenders quote them as separate line items that only make sense priced together.

SOFR: FAQ

LIBOR was an unsecured, survey-based estimate of what large banks thought they would pay to borrow from each other, which made it vulnerable to manipulation. SOFR is transaction-based and secured: it is calculated from actual overnight repurchase agreements collateralized by Treasuries. Because secured borrowing is cheaper than unsecured, SOFR prints structurally lower than LIBOR did, so legacy loans that transitioned at LIBOR's 2023 cessation added a fixed spread adjustment to keep all-in pricing roughly equivalent. New CRE originations simply quote a spread over SOFR.
The quote has two moving parts. SOFR is the market index, resetting each interest period, usually monthly using 1-month Term SOFR. The spread is the lender's fixed margin for credit risk, so the all-in rate equals the index plus the spread at each reset. Check three companion terms before comparing quotes: the SOFR floor, which sets a minimum index level; the required interest rate cap and its strike; and whether extensions require purchasing replacement caps, which is a real future cash cost.


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