The Floating-Rate Hedge That Doesn't Hedge: How Lenders Underwrite Interest-Rate Swap Mechanics, Counterparty Risk, and Basis Mismatch in Covenant Compliance

The Floating-Rate Loan With a Hedge Is a Loan Without a Hedge

A borrower draws a floating-rate loan at SOFR plus 300 basis points. Rates spike. The borrower enters an interest-rate swap, paying a fixed rate and receiving floating, to lock in costs. On the surface, the hedge works. Below the surface, the hedge doesn't exist where covenant compliance lives. The lender's legal documents contain no language requiring the borrower to maintain the swap, no language requiring the swap to be "in the money," and no language tying swap cash flows to debt service calculations. The swap is a separate instrument, held by a separate counterparty, governed by separate documentation. When rates move, when spreads widen, when the swap counterparty falters, the borrower discovers that the hedge was never actually hedging the covenant constraint that matters. This is not accident. It is structural design.

The Covenant Calculation That Ignores the Swap

Loan agreements define DSCR, interest coverage, leverage, and other covenant ratios using the actual interest expense paid on the debt, not the all-in cost after hedging. This distinction is foundational. If a borrower's debt service reserve account is sized to cover 12 months of interest at the current floating rate, the reserve reflects only the coupon, not the swap. If the borrower's DSCR covenant requires a minimum ratio of 1.25x, the lender calculates that ratio using the debt service line item in the operating agreement, which records only the loan payment, not the swap payment. The swap lives in the financial statements as a derivative asset or liability. The covenant lives in the cash flow model as a debt service obligation.

When rates rise sharply, the borrower's swap counterparty may owe cash to the borrower, improving the borrower's balance sheet. But that swap cash flow does not reduce the debt service line item that the lender uses to calculate the DSCR covenant. The lender's legal agreement does not require the borrower to apply swap cash flows to debt service. The borrower must make the full floating-rate payment, on time, to avoid default. The swap payment is separate. If the swap is in the money, the borrower receives the benefit in cash, but that cash is not contractually dedicated to debt service. This creates a structural mismatch: the hedge protects economics, but it does not protect covenant compliance.

Basis Risk and the Spread That Moves Independently

Most floating-rate loans are indexed to SOFR. Most interest-rate swaps are also indexed to SOFR. But the loan coupon is SOFR plus a credit spread. The swap is indexed to SOFR only. The swap hedges the index risk, not the spread risk. When credit spreads widen, the borrower's all-in cost rises, but the swap does not move. The borrower's DSCR deteriorates. The covenant cushion compresses. The lender has explicitly designed the underwriting assumption to exclude spread widening as a stress scenario in the swap documentation, because lenders know that swap hedges do not protect against spread compression.

This is path-dependent and structural. Over decades, the credit markets have evolved to allow floating-rate lending with swaps as a standard practice, but the swap documentation has never been rewritten to include basis-risk protection. Lenders argue that basis risk is a borrower issue, not a lender issue, because the borrower selected the credit spread at origination. But the lender controls the loan documents. The lender controls the covenant definitions. The lender could require the borrower to maintain a swap that hedges the full coupon, including spread, but does not. The lender could define covenant calculations to include swap cash flows, but does not. The lender could require the swap to be "in the money" at all times, with automatic margin calls tied to covenant compliance, but does not. The absence of these protections is not a drafting oversight. It is a structural choice that preserves lender optionality.

Counterparty Risk and the Hedge That Vanishes in Stress

The swap is a contract between the borrower and a counterparty, typically a bank or dealer. The counterparty has a credit rating. The counterparty has capital constraints. The counterparty has counterparty risk. When rates fall sharply, the swap is out of the money, and the borrower owes cash to the counterparty. When rates rise sharply and credit spreads widen simultaneously, the swap is in the money, and the counterparty owes cash to the borrower. But the counterparty's balance sheet has deteriorated. The counterparty's credit rating has fallen. The counterparty is at risk of default. The borrower's hedge, which was supposed to protect against rising rates, now exposes the borrower to counterparty default risk in the exact scenario where the hedge is most valuable.

Lenders do not require the borrower to include swap counterparty credit risk in the loan underwriting. The lender does not require the borrower to obtain a guarantee from the counterparty's parent company. The lender does not require the borrower to maintain a minimum counterparty credit rating in the swap documentation. The lender does not require the borrower to post collateral or establish a backup counterparty. The lender does not include counterparty default as a stress scenario in the covenant sensitivity analysis. This is not because counterparty default is unlikely. It is because counterparty default risk is a constraint that lenders have accepted as structural and permanent. The swap documentation has been written the same way for 30 years because the industry has normalized the risk. Over cycles, swap counterparties have failed, borrowers have lost hedges at critical moments, and lenders have continued to underwrite floating-rate deals with swaps as if counterparty risk does not exist. The structural design persists because it does not affect the lender's position.

The Loan Agreement Language That Preserves Lender Flexibility

Loan agreements typically require the borrower to maintain an interest-rate swap for a floating-rate loan, but the requirement is often stated as a "soft" covenant or a condition to funding that lapses after closing. The lender's legal team drafts language like "Borrower shall maintain, or shall cause to be maintained, an interest-rate swap or other hedging instrument with respect to no less than 50% of the outstanding principal balance of the Loan, provided that such swap shall be with a counterparty reasonably acceptable to Lender." This language contains multiple escape clauses. "Reasonably acceptable" gives the lender veto power over the counterparty. "No less than 50%" allows the borrower to leave half the exposure unhedged. "Or other hedging instrument" allows the borrower to substitute a cap, floor, or swaption, each with different mechanics and different risk profiles. "Provided that such swap shall be maintained" does not explicitly require the swap to remain in place or to be "in the money." If the swap is terminated early, the lender has no contractual remedy. If the swap moves out of the money, the lender has no contractual remedy. If the counterparty downgrades, the lender has no contractual remedy.

The lender preserves the option to declare a covenant breach if the swap is terminated or if the counterparty downgrades below a certain threshold, but the lender does not exercise that option uniformly across deals. The lender's decision to enforce the swap covenant is discretionary. This discretion is valuable to the lender because it allows the lender to negotiate a workout, a repricing, or a prepayment without triggering a formal default. The borrower, facing the threat of a discretionary default, agrees to terms that are favorable to the lender. The structural design of the swap covenant, with its soft language and discretionary enforcement, is not a constraint on the lender. It is a tool that the lender uses to expand optionality.

What I'm watching next

• Whether lenders will move toward "dynamic hedging" requirements that tie swap mark-to-market values to covenant cushion calculations, or whether the industry will continue to treat the swap as a separate instrument with no contractual linkage to covenant compliance.
• How counterparty default risk will reshape swap documentation after the next significant dealer failure, and whether borrowers will demand collateral agreements or backup counterparty provisions that are not currently standard.
• Whether basis-risk compression will eventually force lenders to redefine floating-rate covenant calculations to include spread widening as an explicit stress scenario, or whether the structural design will persist because it continues to favor lender optionality over borrower protection.