Fixed-Rate vs ARM for Permanent Commercial Real Estate Financing

When Fixed-Rate Permanent Loan Is the Right Call

Fixed-rate permanent financing is the right structure when your primary objective is payment certainty over a multi-year hold, when the asset's cash flow margin over debt service is tight, or when you are financing an asset you intend to hold through at least one full rate cycle. Life companies and agencies price fixed-rate paper most aggressively on stabilized assets with strong in-place income, and the non-recourse, long-term fixed execution that life companies offer is genuinely difficult to replicate on an adjustable basis.

• Long hold strategy of 7 to 10-plus years where rate certainty protects cash-on-cash returns from reset risk
• Asset with tight DSCR cushion of 1.20x to 1.30x where a 200 basis point rate increase at reset would breach coverage
• Sponsor with a distribution obligation to passive investors who underwrite to a stable preferred return
• Rate-curve view that SOFR will remain flat or rise over the next 5 years, making the fixed coupon the cheaper option in total interest cost
• Stabilized multifamily, anchored retail, or NNN industrial where a life company offers 5.75 to 6.25 percent non-recourse fixed for 10 years, below bank ARM all-in cost when cap premium is included
• Refinance of a maturing loan where the borrower wants to eliminate rollover risk entirely and lock final financing through a target disposition date

How to Choose Between Fixed-Rate Permanent Loan and Adjustable-Rate (ARM) Permanent Loan

The starting point is hold period math, not rate opinion. If you plan to sell or refinance in 3 to 5 years, the ARM's lower initial coupon compresses interest expense during the period you actually own the asset, and the lighter prepayment after the initial fixed window lets you exit without writing a large yield maintenance check. If you plan to hold for 7 to 10 years, the fixed rate eliminates the single biggest unknown in your pro forma: what SOFR is doing in year 5 or 6 when the ARM resets. Lenders underwrite to the initial ARM rate, but your actual debt service cost resets on a schedule the market controls, not you.

The second variable is the all-in cost comparison, not just the coupon. ARM permanent loans on stabilized commercial assets frequently require an interest rate cap, particularly through agency programs and most bank lenders above 70 percent LTV. A 3-year cap with a strike 200 basis points above the initial rate on a $10M loan can cost $80,000 to $150,000 depending on volatility at the time of origination, and that cost amortizes into your effective yield. When you add cap premium to the ARM coupon, the spread advantage over fixed narrows from 50 to 75 basis points to 20 to 40 basis points in many executions. Run the total interest cost including cap premium before concluding the ARM is cheaper.

Rate-curve view is the third input, and it is the one most borrowers overweight relative to the first two. If SOFR drops 150 basis points before your first ARM reset, the adjustable loan wins decisively on total interest cost. If SOFR stays flat or rises, the fixed rate wins. The problem is that SOFR forecasts 3 to 5 years forward are close to random for most commercial borrowers. The responsible framework is to treat the ARM as a rate bet and the fixed as rate insurance, then price that insurance against your actual risk tolerance and the cash flow margin of the specific asset. An asset with 1.45x DSCR at the initial ARM rate and 1.10x at the fully-indexed worst-case rate is a very different risk profile than an asset with 1.30x at initial and 0.92x at worst case.

Lender selection and program mechanics should inform the structure decision, not follow it. Life companies are the dominant source of long-term fixed-rate permanent financing at competitive spreads, and they rarely offer ARM products. Agency multifamily ARM products have standardized cap structures and transparent index mechanics, making them more borrower-friendly than many bank ARM programs where margin and cap terms vary by relationship. Banks will do both fixed and ARM, often with recourse below $5M and sometimes above it, and bank ARM margins have historically been 200 to 275 basis points over SOFR on CRE assets outside multifamily. If the asset is multifamily and the loan is above $3M, running an agency ARM quote alongside agency fixed and a life company fixed quote is the minimum competitive process. On CRE asset types outside multifamily, the fixed versus ARM choice narrows to bank and debt fund execution, where fixed bank terms of 5 to 7 years with balloon payments and ARM bank products with shorter reset windows are both common.

The fixed versus ARM decision is a hold-period and risk-capacity question, not a rate forecast contest. Know your exit, know your DSCR floor at the worst-case reset, price the cap, and then pick the structure. Most sponsors who regret an ARM chose it because the initial rate was attractive, not because the hold period or cash flow math supported it.