Key Commercial Loan Terms and Definitions

Commercial loan terms decide whether a deal closes, at what size, and who's personally on the hook if it goes sideways. Misread a DSCR covenant or skip past a carve-out clause, and the risk profile of the whole transaction flips before anyone notices, usually right around the time the wire goes out.

That's not an abstract problem this year. The Mortgage Bankers Association put roughly $957 billion in CRE loans maturing in 2025, with another $936 billion coming due in 2026. Most of that volume isn't getting a quiet payoff. It's getting renegotiated, extended, or refinanced into a rate environment that looks nothing like the one the loan was born in, and the terms below are the language people are actually using on live deals right now to figure out what happens next.

How a commercial real estate loan is structured before any metrics are applied

A commercial real estate loan is a mortgage secured by a lien on commercial property, built for income-producing or business-use assets, and it runs on underwriting logic that has almost nothing to do with how a residential mortgage gets approved. Lenders sort deals into five property buckets: office, retail, industrial, hospitality, and residential (multifamily, plus one- to four-family development and construction). Inside those buckets, loans split into three flavors: acquisition, development, and construction financing (ADC, if you like acronyms), income-producing real estate held for lease, and owner-occupied nonresidential real estate, where the business itself is the tenant.

Here's where smart people trip: loan term and amortization schedule sound like the same thing and are not, and mixing them up is how borrowers get blindsided. The loan term is how long until the loan matures, usually five to ten years for a conventional commercial mortgage. The amortization schedule is the period used to size the monthly payment, often stretched to 20 or 25 years. Put those two numbers together and you get the balloon payment: a borrower pays as if they had 25 years to pay the loan off, but the full remaining balance comes due at year seven or year ten, whatever the term says.

Run it with real numbers. A loan carries a 7-year term and a 25-year amortization schedule. The monthly payment gets calculated as though the borrower has 25 years to pay it down, small and manageable. But at the end of year seven, whatever principal is left doesn't roll forward or get forgiven. It's due, in full, that month. The gap between what you're paying and what you still owe is the balloon, and it's why refinancing is built into the structure from day one, not an afterthought you deal with later.

Different products carry different term shapes. SBA 7(a) loans can run up to 25 years for real estate purchases, which is long for commercial paper. SBA 504 loans typically run 10 or 20 years at a fixed rate. Conventional commercial mortgages sit in that five-to-ten-year window with a balloon waiting at the end. Bridge loans are the short-fuse option, one to three years, meant to get a property from a transitional state (recently vacated, mid-renovation, waiting to stabilize) to something a permanent lender will actually touch.

Net Operating Income and why it anchors every downstream metric

Net Operating Income, or NOI, is total property income minus operating expenses, and it excludes debt service and capital expenditures on purpose. NOI is supposed to measure how the property performs on its own, stripped of however it happens to be financed, so a lender can compare deals with completely different loan structures on the same terms.

What counts and what doesn't matters more than it should. NOI includes gross rents and other income, minus vacancy loss, minus the cost of running the place: taxes, insurance, management fees, maintenance. It does not include the mortgage payment, and it does not include reserves set aside for a new roof or an HVAC replacement. Before you get to NOI there's a step called Effective Gross Income, or EGI: gross potential income adjusted down for vacancy and credit loss, giving you a realistic read on what the property actually brings in before operating expenses come out.

Lenders don't take a borrower's word for what NOI is. They pull the T-12, the trailing twelve months of actual operating history, and check the presented NOI against what the property has actually produced. Think of the T-12 as the referee between what the rent roll promises and what the bank statements prove.

Why does NOI get its own section before any ratio shows up? Because it sits upstream of everything. Move the NOI assumption by even a small margin and DSCR moves, debt yield moves, cap rate moves, the whole chain shifts with it. That's exactly why NOI is one of the most contested points in lender-borrower negotiation. Nudge an expense line or a vacancy assumption two percentage points and loan proceeds can swing by real money.

And here's what makes 2025 different from 2021: a property's NOI that comfortably supported a loan at 3.9% might not clear the lender's DSCR requirement at 6.6%. The income hasn't changed. Rents look the same, tenants are still paying, the building hasn't gotten worse. The debt service required to carry that loan got more expensive, and the constraint tightened underneath cash flow that never moved.

DSCR: the ratio lenders use to decide whether a property can carry its debt

Debt Service Coverage Ratio is NOI divided by annual debt service, principal plus interest. It's the one number lenders lean on hardest to answer a plain question: does the income this property generates actually cover what it owes?

A DSCR of 1.0x means the property breaks even, income exactly matching the debt payment, with zero cushion if a tenant leaves or an expense spikes. Below 1.0x, the property's cash flow can't service the debt on its own, full stop. Above 1.0x is where the safety margin lives, and how much margin a lender wants depends on what kind of asset sits behind the loan.

As of 2025, per capitalfunding.com, stabilized lower-risk assets like multifamily and industrial tend to need a minimum DSCR around 1.25x. Riskier property types, hotels especially, or speculative office space in a market still figuring out what office demand even looks like these days, often need 1.30x to 1.50x or higher before a lender feels comfortable signing off.

Here's what's reshaping deals right now: in a higher-rate environment, DSCR often becomes the binding constraint on loan size, ahead of appraised value or the equity the sponsor's bringing to the table. If NOI can't clear the coverage threshold at current rates, the loan gets sized down, period, no matter what the appraisal says the building is worth. A deal that penciled out fine at a lower rate might not clear a 1.25x DSCR test at 6.6%, and the fix is a smaller loan, not a better appraisal.

DSCR doesn't clock out after closing either. Lenders build DSCR covenants into ongoing loan monitoring, with specific breach triggers written into the documents. Fall below the threshold mid-loan and, depending on the document, that can mean a cure obligation (fix it within a set window) or, worse, an event of default. The ratio that got you the loan keeps grading your performance for as long as you owe money on it.

LTV and debt yield: the two other tests that size every institutional loan

Loan-to-Value, or LTV, is the loan amount divided by the appraised value, and what it really measures is the equity cushion: how far the collateral's value could drop before the lender is underwater. As of 2025, lenders have tightened up meaningfully, generally sitting in the 60% to 70% range for most property types, down from the 75% to 80% that was normal when rates were lower and risk appetite was higher.

One catch worth sitting with: LTV is only as trustworthy as the appraisal underneath it. If the appraised value at origination runs hot, the equity cushion the ratio implies is thinner in reality than the math on paper suggests. The ratio itself is fine; the input feeding it might not be.

Debt Yield is NOI divided by the total loan amount, expressed as a percentage, and it exists because of a hard lesson from 2008. CMBS lenders realized DSCR and LTV could both get quietly distorted, DSCR by artificially low rates making debt service look cheap, LTV by inflated appraisals making the collateral look worth more than it was. Debt yield strips both variables out. It asks a blunt question: if the lender foreclosed today, what unlevered cash return does the loan amount represent? A 10% debt yield means NOI equals one-tenth of the loan balance, full stop, no interest-rate assumptions anywhere in the math.

Most institutional lenders want 8% to 10% minimum debt yield on a stabilized commercial loan, and CMBS lenders typically hold the line at 9% to 10%.

Lenders run LTV, DSCR, and debt yield all at once, and the loan gets sized to whichever test spits out the smallest number. Figuring out which of the three is actually binding on a given deal, the one quietly setting the ceiling while the other two have room to spare, takes practice. It's a real skill, and it's the difference between negotiating from understanding and just guessing at what the bank will say yes to.

Cap rate: how the market prices income-producing property

Cap rate, short for capitalization rate, is NOI divided by property market value, expressed as a percentage. Flip the formula and it becomes a valuation tool: take NOI, divide by the cap rate, get implied value. A property throwing off a given NOI at a 6% cap implies a proportionally higher value. That inversion is the everyday move appraisers and brokers use to turn income into a price tag.

Where does the cap rate itself come from? Appraisers pull it from comparable sales, meaning what similar properties actually traded for relative to their income. That makes cap rate selection one of the most argued-over inputs in a valuation, and lenders scrutinize it closely, because a slightly different cap rate assumption can shift implied value by millions of dollars on a single building.

Cap rate and DSCR answer two different questions, worth being precise about. Cap rate speaks to what the asset is worth; DSCR speaks to whether the cash flow can carry the debt. A property can carry a low cap rate, implying a rich value, and still fail a DSCR test, because a high valuation says nothing about whether the income comfortably covers the loan payment.

There's also the exit cap rate: the cap rate an underwriter projects at the eventual sale, used to estimate future value. It's baked into return models as a core assumption, and because it's a guess rather than a fact, it's one of the more consequential guesses in the whole exercise. When rates climb, cap rates tend to follow, and a building that appraised at a lower cap rate in a low-rate world might trade at a noticeably higher cap today, which compresses implied value even though the NOI itself hasn't moved an inch.

The rent roll, extension options, and the terms that govern loan life after origination

The rent roll is the tenant-by-tenant ledger of every lease in the building: names, square footage, rent, lease start date, expiration, renewal options. Lenders read it as a risk map, not paperwork, because lease expirations that fall inside the loan term represent real rollover risk. A tenant that doesn't renew becomes a vacancy, and vacancy is exactly what NOI underwriting exists to guard against.

A rent roll that looks rock-solid at closing doesn't stay frozen. It's a living document, and as leases expire and tenants decide whether to stay, the lender's confidence in the property's cash flow moves right along with it, for better or worse.

Extension options are provisions letting a borrower push the maturity date out under specified conditions, usually a performance test (DSCR clearing some threshold), an extension fee, and confirmation there's no existing default on the loan. These show up often in agency and floating-rate structures, and given the maturity wall coming due in 2025 and 2026, plenty of borrowers will lean on extension options rather than refinance into a market that's gotten a lot less forgiving.

In construction lending, there's the draw schedule: a timeline for releasing loan funds tied to project milestones. Lenders don't hand over the full amount on day one; they release money as work gets verified, which caps how much exposure they're carrying against a half-finished building.

And then there's SOFR, the Secured Overnight Financing Rate, the benchmark that took over pricing on variable-rate loans after LIBOR got phased out. Floating-rate CRE loans are typically priced as SOFR plus a spread, so when SOFR moves, debt service moves with it, dollar for dollar. That's exactly why DSCR modeling on floating-rate debt has to stress-test a range of rate scenarios rather than lean on one static number. A DSCR that looks fine today can look a lot less fine if SOFR climbs another point from here.

Recourse, non-recourse, and the carve-outs that determine personal exposure

A non-recourse loan is secured only by the property itself. If the borrower defaults, the lender's recovery stops at the collateral, and the borrower's personal assets stay untouched. This is the standard structure across institutional CRE lending, and CMBS loans are commonly written this way.

"Non-recourse" doesn't mean full protection, though, and that's where carve-outs, sometimes called bad boy guarantees, come in. These are specific exceptions written into the loan documents that flip on personal liability if certain things happen: fraud, misrepresentation, an unauthorized transfer of the property, environmental violations, filing for voluntary bankruptcy. The nickname is unusually casual for a legal term; the consequence attached to it is not.

Here's the practical risk worth sitting with: a borrower who genuinely believes they've got a non-recourse loan can trigger personal liability through actions that feel like ordinary operating decisions, nothing predatory, nothing that feels like fraud from the inside. Carve-out language isn't standardized across the industry either; it varies loan to loan, lender to lender. Reading it clause by clause, rather than assuming it works the way the last deal's documents did, is the difference between knowing your actual exposure and believing in protection that was never really there.

Which structure applies also tells you something about the deal itself. Recourse loans show up more in smaller commercial transactions, in construction lending, and in bridge financing, where the lender wants the borrower to have real skin in the game personally. Knowing which one you signed is a decent proxy for how much risk the lender thinks it's actually carrying.

The capital stack: how debt and equity layers interact in a deal's structure

The capital stack is the full structure of financing behind a real estate deal, organized by priority of repayment: who gets paid first if things go well, and who eats the loss first if they don't.

At the bottom, first in line to get repaid, sits senior debt: the first-lien mortgage, lowest risk, and correspondingly the lowest return. This is the layer that DSCR, LTV, and debt yield are all underwriting; every ratio covered so far in this piece exists to size and monitor senior debt specifically.

Above that sits mezzanine financing, subordinate debt secured not by a mortgage on the property but by a pledge of the borrower's equity interest in the entity that owns it. That distinction matters structurally: mezz lenders can't foreclose on the building directly, but they can often step into the ownership entity if things go sideways, and mezz debt frequently carries a right to convert into equity on default. It sits between senior debt and equity in both risk and return, and it tends to show up in deals where the senior loan alone doesn't provide enough proceeds and the sponsor doesn't want to sell off equity to close the gap.

At the very top, last in line to get paid and carrying the highest risk alongside the highest potential return, sit preferred equity and common equity, the layers that only see money once everyone below them has been made whole.

Why does any of this belong in a piece about loan terms instead of a piece about deal structure? Because mezzanine debt in the capital stack doesn't stay contained to its own layer. It can shape the senior lender's covenants and requires an intercreditor agreement spelling out exactly how the senior lender and the mezz lender behave toward each other if the borrower defaults. The capital stack sits alongside DSCR, LTV, and debt yield as the structure those ratios are quietly built to protect.