Using an interest rate swap with multifamily debt

An interest rate swap can convert a specified floating-rate exposure into a more predictable interest profile. It does so through a separate exchange of payments, not by rewriting the mortgage into a fixed-rate loan. The owner must evaluate the combined economics, legal obligations and exit requirements of both contracts.

Begin with the reason for fixing exposure. The property may need stable payments during an extended hold, protection against a financing stress or certainty for investor distributions. Match the hedge to the intended exposure and period rather than select the swap solely because its displayed rate appears attractive.

Reconcile the swap quote with the loan spread

In a straightforward pay-fixed, receive-floating swap, the borrower pays the agreed fixed swap rate and receives the specified floating benchmark on the hedge notional. With a fully matching loan, the floating benchmark receipts offset that portion of loan interest, leaving the fixed swap rate plus the loan's credit spread.

Chatham's CRE swap FAQ explains that a quoted swap rate can contain a mid-market component and a transaction-specific credit charge, and that an all-in quotation can also include loan spread.^[1] Ask the provider to label each component. Adding a loan spread twice or omitting a credit charge distorts the comparison.

Consider an original hypothetical $120 million interest-only loan with a 2.1% spread and a matching swap paying 4.25%. Assume the swap rate comprises a 4.10% mid-market reference plus a 0.15% credit charge. All figures are invented examples, not current pricing.

At a 5.3% benchmark, simplified annual loan interest is $8.88 million over 360 days. The swap's net receipt is $1.26 million, leaving $7.62 million, equivalent to 6.35%. At a 3% benchmark, loan interest is $6.12 million and the swap's net payment is $1.5 million, again leaving $7.62 million under matching conventions.

Verify the conventions that make the offset work

Match benchmark definition, rate-fixing dates, resets, accrual periods, day counts and payment schedules. A loan and swap can both mention SOFR while using different observations or forms of the rate. Any difference should be identified as residual exposure and modeled separately.

The ARRC's SOFR conventions distinguish Term SOFR, published averages, observation periods and interest periods.^[2] The conventions are voluntary recommendations, while the signed documents control the transaction. Use them to frame questions rather than assume a common benchmark label guarantees a complete offset.

Prepare one period's gross loan payment, gross swap legs and net settlement using the actual confirmation. Establish whether settlement occurs before or after the loan bill is paid. If receipts arrive later, retain liquidity for the gross payment even when the combined annual cost is predictable.

Analyze the loan floor explicitly

A floor in the mortgage can prevent its benchmark component from falling while an unmatched swap continues to receive the actual lower benchmark. The result can be an increase in the combined interest cost when rates fall below the floor.

Chatham's floor explanation illustrates this mismatch and potential ways to address it.^[3] A matching floor in the swap, a negotiated loan-floor change or a different hedge can have different costs. Obtain approved terms and compare complete scenarios; do not assume a floor is waived because the loan is described as swapped.

In the hypothetical example, assume the loan has a 3.5% benchmark floor but the swap has none. At a 2% benchmark, loan interest is $6.72 million and the swap's net payment is $2.7 million. Combined interest becomes $9.42 million, equivalent to 7.85%, rather than the intended 6.35% profile.

The $1.8 million increase equals the 1.5% floor mismatch on $120 million over 360 days. This is a cash-flow sensitivity, not a prediction that rates will reach that level. The floor deserves analysis even when current rates are comfortably above it.

Set the notional and term for the real exposure

A swap's notional profile should be compared with outstanding and expected principal. If only $100 million of the hypothetical $120 million loan is hedged, $20 million remains exposed to benchmark changes, subject to its floor. A 1% increase above the floor adds $200,000 of simplified annual interest on that unhedged balance.

Chatham's FAQ discusses the risk that a swap's fixed notional profile can exceed uncertain construction draws.^[1] It also describes proportionate hedging as one potential approach. For a stabilized mortgage, compare the swap schedule with amortization, expected paydowns and any planned partial collateral releases.

Match the protected period with both loan maturity and the intended sale or refinancing date. Chatham's FAQ describes shorter swap terms and later renewal as matters to negotiate with the lender.^[1] A shorter swap leaves later exposure and may require renewal under the loan. A longer swap can create an obligation after the original financing is retired unless the agreed structure addresses that outcome.

Read the legal package as a financing obligation

Review the ISDA Master, Schedule, confirmation, any credit support annex, security documents and guarantees with qualified counsel. Identify who owes payments, who provides support and what events can cause termination before the planned date.

Chatham's July 2021 legal training distinguishes the swap documentation from the loan and identifies additional termination events, affiliate provisions and credit-support linkages.^[4] These are issues to inspect and negotiate, not a claim that every ISDA contains the same elections. A broad affiliate definition can change the exposure of otherwise separate property entities.

The same training discusses how incorporation of loan covenants and payoff-related termination provisions can affect the swap.^[4] Reconcile cure periods, modifications and releases across documents. Ownership should understand whether a loan covenant breach, guarantor event or lender transfer changes its hedge obligations.

Include exit settlement in the investment plan

A swap can have positive or negative market value to the borrower. Early termination economics depend on the contract and market replacement terms for the remaining exposure, not merely the current overnight rate or original principal amount.

Chatham's FAQ describes two-way termination economics and the importance of modeling an early sale or refinance.^[1] It also discusses transfers and cancellability as conditional possibilities. Obtain a transaction-specific scenario and do not count a future termination receipt or assume transfer without approval.

If a refinancing model assumes a $1.7 million termination payment, include it as a funded closing use. If another scenario produces a $900,000 receipt, show the timing, conditions and uncertainty separately. These invented amounts demonstrate how settlement changes liquidity; they are not swap valuations.

The completed swap decision should identify the fixed component, loan spread, matching conventions, floor treatment, notional schedule, legal support and exit scenarios. A swap is useful when that package fits the property and ownership plan. Payment certainty should be evaluated together with the obligations that create it, so today's hedge does not become an unplanned constraint at the next capital event.