From SOFR to Spend: Translating Forward Curves, Basis, and Hedging Friction into Underwritten All-In Carry for Transitional Loans

The Rate Quote You See Versus the Rate You Underwrite

A transitional lender sends a term sheet: "300 basis points over three-month SOFR, 30-year amortization, 18-month initial term." A borrower reads this as a fixed cost of capital. Neither is wrong, but both are incomplete. The lender has priced the loan against a forward curve snapshot taken on the day the term sheet was issued. The borrower will draw funds over 90 to 180 days. Between the quote date and the funding date, the forward curve moves, basis spreads widen or tighten, and the all-in rate the borrower actually pays can drift materially from the term sheet number.

In practical terms, this is the hidden cost of transition. A lender quoting a margin (the 300 bps) is anchoring to an assumption about where three-month SOFR will reset over the life of the loan. But a borrower in execution mode is asking a different question: what will I actually pay when I draw, and how much of the rate risk do I own versus the lender?

How Forward Curves Create Timing Risk in Transitional Underwriting

When a lender underwrites a transitional loan, they model cash flows using a forward curve. That curve reflects market expectations for three-month SOFR at each reset date over the loan term. If the curve is flat, the lender assumes SOFR will stay roughly where it is today. If the curve is steep, the lender is pricing in rate increases down the road.

The problem: that curve is live. It changes daily. A lender underwrites the deal on Monday morning using the Monday curve. By Thursday, when the borrower's sponsor board approves the business plan, the curve has shifted. Rates may have moved 15 basis points higher, or the spread between SOFR and the broader funding curve has widened. If the lender has not locked the forward curve (through a rate cap, swap, or other hedge), the borrower's true cost of capital has changed, even though the margin has not.

For a transitional sponsor executing over 120 to 180 days, this timing lag matters enormously. The longer the execution window, the greater the exposure to curve movement. A sponsor who locks a rate early gains certainty but may overpay if rates fall. A sponsor who delays locking waits for better pricing but risks being locked out if spreads widen or the lender's risk appetite shifts.

Translation: the term sheet margin is only half the story. The other half is the forward curve assumption embedded in the underwriting, and whether that curve is hedged, partially hedged, or left naked to market movement.

Basis Risk: The Gap Between What the Lender Hedges and What the Borrower Pays

Here is where the mechanics get real. A lender funding a transitional loan typically finances itself in the repo market, the debt capital markets, or both. The lender's cost of funds is not exactly three-month SOFR plus a fixed spread. It is something more complex: SOFR plus a credit spread, plus a liquidity premium, plus a term premium if the lender is issuing longer-dated debt to fund shorter-dated resets.

When a lender quotes "300 over SOFR," they are implicitly assuming they can fund themselves at SOFR plus some internal spread. If their actual funding cost is SOFR plus 80 basis points, the lender pockets 220 basis points of margin. But if market conditions tighten and their funding cost rises to SOFR plus 120 basis points, the lender's margin shrinks to 180 basis points, even though the borrower's rate quote remains unchanged.

This is basis risk. The lender may hedge it by locking in their funding cost (through a swap or term debt issuance) at the time of the term sheet. Or they may leave it unhedged, betting that their funding costs stay stable. Either way, the borrower should know whether the quoted rate assumes a hedged or unhedged lender balance sheet.

In practice, most transitional lenders do hedge their funding cost, but the hedge is imperfect. A lender who funds via a floating-rate term loan indexed to SOFR plus 50 bps has basis risk between their cost and the SOFR index they pass through to the borrower. When spreads widen, the lender's cost rises faster than the SOFR index, and the lender absorbs the loss. When spreads tighten, the lender benefits.

What this means: a borrower should ask whether the lender's quoted margin includes compensation for basis risk. If the lender is fully hedged, the margin is pure profit. If the lender is partially hedged, the margin includes a buffer for basis widening. If the lender is unhedged, the margin is volatile relative to the lender's true cost of capital.

Hedging Friction: The Cost of Certainty in Execution

A borrower who wants to lock a rate early must hedge the forward curve. The most common instruments are interest rate caps (a call option on rates) and swaps (a fixed-for-floating exchange). Both have costs. A cap costs an upfront premium. A swap costs nothing upfront but commits the borrower to a fixed rate regardless of where rates fall.

For a transitional loan with a 120-day execution window, the cost of a cap or swap is material. A 300 basis point cap might cost 40 to 80 basis points upfront, depending on volatility and the cap strike. A swap might commit the borrower to paying an all-in rate of 6.50% when the current market rate is 6.20%. Both reduce the borrower's downside if rates rise, but both reduce upside if rates fall.

The friction is real. A borrower who caps the rate early has peace of mind but foregoes the benefit if rates decline during execution. A borrower who delays hedging keeps optionality but risks being unable to hedge at all if volatility spikes or spreads widen sharply.

For lenders, this friction shows up in the underwriting. A transitional sponsor who hedges early signals confidence in the business plan and reduces the lender's rate risk. A sponsor who leaves the rate unhedged is betting on rate stability or is capital-constrained and cannot afford the hedge premium. Lenders price this optionality into the margin.

All-In Carry: What the Borrower Actually Pays, and Who Owns What

When a lender underwrites a transitional loan, they model the all-in carry to the lender. This includes the margin, the reinvestment of prepayment proceeds, the cost of reserves, and any incentive fees or exit fees. For a borrower, all-in carry is the true cost of capital: the margin plus the forward curve assumption plus the cost of any hedges, divided by the loan amount and time to stabilization.

Here is the key insight: the lender's underwritten carry and the borrower's actual cost of capital diverge when the forward curve moves, spreads widen, or the borrower hedges. A lender who quoted 300 bps over SOFR on a forward curve that assumed SOFR at 5.50% will earn a different carry if SOFR resets at 5.80%. The borrower will pay more. The lender will earn more, unless the lender has hedged and locked in the original curve assumption.

Translation: the all-in carry is not fixed at closing. It is dynamic, determined by the interaction of the margin, the forward curve, the hedge decision, and the actual path of rates over the execution window and loan term. A borrower who understands this can make smarter decisions about when to lock, how much to hedge, and whether to accept a higher margin in exchange for a longer lock period.

For lenders, the discipline is to separate the margin (the compensation for credit risk, servicing, and capital) from the rate risk (the exposure to forward curve movement). A lender who conflates the two will either underprice credit risk in a rising-rate environment or overprice it in a falling-rate environment. The best transitional lenders are explicit about which risks they are hedging, which they are pricing, and which they are transferring to the borrower.

What I'm watching next

• Curve inversion and term premium: if the forward curve inverts or flattens sharply, borrowers will face a choice between locking long-term rates at historically high levels or accepting near-term rate resets with execution risk. This will reset sponsorship economics for transitional deals with longer stabilization timelines.
• Basis blowouts and lender funding costs: if spreads between SOFR and lender funding costs widen materially (e.g., during a credit event or liquidity squeeze), lenders will either reduce capacity or reprice margins upward. Borrowers who have not yet locked will face a materially different cost of capital mid-execution.
• Hedge ratio optimization: as volatility rises, borrowers and lenders will become more granular about which portions of the loan to hedge (e.g., hedging only the first 12 months, or only the portion drawn in the first 60 days). This will create opportunities for sponsors who can model the trade-off between certainty and cost.