Floating vs Fixed Rate Structures for Thin-Liquidity CRE

The floating-versus-fixed debate is usually framed as a rate call: do you think rates go up or down. In a thin-liquidity market that framing is wrong, and expensively so.

The real question is what happens if you cannot transact on schedule. In a deep market, a business plan that runs long is an inconvenience — you sell a quarter late. In a tertiary metro with four comparable trades a year, a plan that runs long can mean holding an asset for two extra years because there is no buyer at any price you will accept. The rate structure determines whether you can survive that wait.

Why liquidity changes the calculation

Floating-rate debt in commercial real estate almost always arrives bundled with other features: a shorter term, a bridge or transitional structure, and a required rate cap. Those features, not the rate itself, are what create the risk.

A floating loan is a bet that you will complete a business plan and exit or refinance inside the term. In a liquid market, that bet has an escape hatch — if the plan slips you can usually sell into a functioning bid. In a thin market there may be no bid, and the loan matures anyway.

Fixed-rate debt costs more up front in most environments and buys you the one thing a thin market takes away: time.

What actually broke in the last cycle

The distress between 2023 and 2025 was not primarily an operating failure. Many properties were leasing, and rents in a number of markets were still growing. The failures clustered around three structural features, all of them attached to floating-rate bridge debt:

Short terms met a closed exit. Two- and three-year loans written in 2021 matured into a market where neither a sale nor a refinance was available at the assumed valuation.

Rate caps expired and repriced. A cap purchased cheaply in a low-rate environment cost multiples to replace once rates had moved. Sponsors who had budgeted the original premium as a one-time cost faced an extension requirement they had not reserved for.

Debt service ate the coverage. Floating coupons repriced upward faster than NOI could grow, and deals that penciled at a 1.25x DSCR at closing were below 1.0x within eighteen months.

None of that required a demand problem. It required a maturity date.

The decision framework

Work through these in order. The answer usually falls out of the first two.

1. How long is your business plan, honestly?

Not the plan you underwrote — the plan with the delays you have actually experienced on comparable assets. Permit timelines, contractor availability and lease-up pace are all slower in smaller markets, where there are fewer trades and fewer prospective tenants.

If your honest plan is 30 months, a 36-month loan has six months of margin. That is not enough in a market where a disposition can take two quarters just to find a buyer.

2. How liquid is the exit, measured in trades?

Count actual comparable transactions in the submarket over the last twenty-four months. Not listings — closings. If the number is in single digits, assume your disposition timeline is measured in quarters and that a forced sale carries a meaningful discount.

The bid-ask spread tracker for emerging market dispositions is the tool for this.

3. Does the deal survive the coupon at the cap strike?

This is the test most 2021 underwriting skipped. Do not model the current floating rate. Model the rate at your cap's strike price, held for the full term, and check DSCR and debt yield there. If the deal fails at the strike, you have not bought protection — you have bought a delay.

Run it through the DSCR calculator and see DSCR sensitivity design for smaller lending pools for how to structure the test.

4. What does the extension actually require?

Extension options are rarely free and rarely automatic. Read what triggers them: a minimum debt yield, a minimum DSCR, a fresh cap purchase, a fee, sometimes a paydown. An extension you cannot qualify for is not an extension.

When floating is the right answer

It is not always wrong. Floating-rate debt makes sense when:

• The asset genuinely cannot support permanent debt yet. A property at 60% occupancy will not get agency or life-company financing. Bridge is the only option, and the question becomes how to structure it defensively rather than whether to use it.
• The business plan is short and mechanical. A vacant-unit renovation with contractors under contract is a different risk from a repositioning that depends on rent growth.
• You are reserving properly. Cap replacement cost, extension fees and a debt service shortfall reserve, funded at closing rather than assumed out of cash flow.
• Prepayment matters. Fixed-rate commercial debt often carries yield maintenance or defeasance, which can make an early exit prohibitively expensive. If you have a credible near-term sale, that flexibility has real value.

When fixed is the right answer

• Stabilised assets in thin markets. If the property supports permanent debt, take it. The premium over floating is the cost of not needing the market to cooperate on a schedule.
• Long or uncertain business plans. Anything dependent on rent growth, on a single large tenant, or on absorption in a market with limited demand depth.
• When your reserve for a cap replacement would be uncomfortable. If you cannot fund the downside of floating at closing, you cannot afford floating.

Structuring for the middle ground

The choice is rarely binary. Structures worth negotiating:

• A longer fixed term than the business plan requires, accepting a prepayment penalty you can quantify rather than a maturity you cannot control.
• Fixed-rate debt with a defined open window in the final year or two, which converts the prepayment problem into a scheduling problem.
• A cap with a strike low enough to matter, priced properly. A cap struck far above your break-even coupon is decoration.
• Interest-only periods matched to lease-up, so coverage is tested when the property can actually pass the test.
• Partial fixed, partial floating across a portfolio, so a single rate path does not determine every outcome at once.

The reserve question nobody asks at closing

If you take floating-rate debt in a thin market, size three reserves explicitly and fund them at closing:

1. Cap replacement at a stressed forward price, not today's.
2. Debt service shortfall for the number of months your honest business plan exceeds your underwritten one.
3. Extension costs — fee, paydown, and any new cap required.

A sponsor who has funded all three can wait. A sponsor who has not is relying on a market that, by definition, is not reliable.

What to do next

• Stress the coupon at your cap strike, not the spot rate — cap rate, debt yield and exit cap stress test.
• Read the term sheet against the debt term sheet checklist for non-core acquisitions.
• Model what happens at maturity with how to underwrite refinance risk in non-core markets.
• Compare lender types in local bank debt vs agency debt in emerging markets.

The short version

In a liquid market, floating versus fixed is a rate view. In a thin market it is a solvency question. Ask how long your plan really takes, count the actual trades in the submarket, model the coupon at your cap's strike, and read the extension conditions as though you will need them — because in a market with few buyers, you probably will.

Sources

• Freddie Mac Primary Mortgage Market Survey
• FRED: Federal Reserve Economic Data
• Federal Reserve H.15 Selected Interest Rates