What income a commercial lender excludes from net operating income

The cash flow analysis behind a commercial loan counts only rental income that contributes directly to value or that is stable and typical in the marketplace. It excludes income from trailer rentals — outside storage, including RV spaces within mobile home parks — along with billboards, cell towers, and any extraordinary or non-recurring source.

That single sentence decides more approvals than most borrowers expect. A property can collect the rent it says it collects, deposit every dollar, and still fail the debt service test, because a slice of that revenue never enters the calculation at all. Owners who find out at underwriting have usually already signed a purchase contract priced off the wrong number.

This page explains what comes out, why it comes out, and what to do if a meaningful share of your revenue lands in an excluded bucket.

The list, in one place

Two separate exclusion lists apply, depending on which side of the file is being analyzed.

Property income. Excluded from net operating income:

• Trailer rentals, meaning outside storage — including RV spaces within mobile home parks
• Billboards
• Cell towers
• Any extraordinary or non-recurring source

Operating business cash flow. When the business occupying the property is being analyzed, these are also excluded as non-recurring:

• Gains from asset sales
• Insurance claims
• Settlements
• Investment income

The principle behind the list

The list looks arbitrary until you read the test that generates it. Income qualifies on one of two grounds: it contributes directly to value, or it is stable and typical in the marketplace.

Both grounds are asking the same underlying question in different words. Would this income still be here if the property changed hands tomorrow, under a different owner, financed by a different lender, with no special arrangement carried over?

Rent from a leased suite survives that test. The tenant is in the space, the space is the collateral, and a buyer purchasing the building purchases the lease along with it. That income is what the loan is secured by.

A cell tower lease does not survive it the same way. The revenue depends on a carrier's network plan, on a contract that may or may not transfer cleanly, and on an antenna that can be relocated to a competing rooftop three blocks away. It is real money. It is not real estate income in the sense the analysis requires.

The same reasoning runs through the rest of the list. A billboard is a sign, not space. Outside storage is an unimproved surface being rented by the month with no lease depth behind it. An insurance settlement is a one-time event that has already happened and will not happen again next year. A gain on the sale of a piece of equipment is the liquidation of an asset, not the operation of a business.

The exclusion is not a judgment that the income is fake. It is a judgment that it is not repeatable enough to underwrite a twenty-five or thirty-year loan against.

What is included — and why the contrast matters

The guideline names the ancillary income that does count: laundry, storage, and parking.

Read that against what is excluded and the line becomes clear.

Note the storage line carefully, because it is the one that trips people. Storage counts. Outside storage does not. A self-storage facility renting climate-controlled cubicles is running an includable business. The same operator renting a fenced gravel yard to contractors for trailers and equipment is generating income the analysis will not use. The property type list says the same thing from the other direction: warehouse and self-storage are eligible as traditional self-storage only, with no credit given to outside storage income.

The exclusion can hit twice

For two property types the guideline goes further than the cash flow analysis and speaks to value directly.

So for a park, the RV income is out of the coverage ratio and the park-owned homes are out of the value conclusion. That is a two-sided reduction: a smaller NOI divided into the debt service, and a smaller value against which the loan-to-value is measured. Park owners should read the dedicated page on [park-owned homes and RV income](/blog/mobile-home-park-loan-park-owned-homes-and-rv-income) before modeling anything.

For cell towers and billboards, the guideline states the cash flow exclusion and stops there. It does not tell the appraiser how to treat a tower lease in the value conclusion. We will not invent a rule that is not written: what we can tell you is that the income will not be in the underwritten NOI, and that every appraisal report is desk-reviewed by a state-certified general real estate appraiser on our side before the value is relied on. If the appraiser capitalized tower income into the value, that is a conversation the review will have.

What this actually costs — an illustration

The figures below are invented for illustration. They are not a quote, a rate, or a promise about your property.

Assume an investor-owned strip center. Gross collections are 240,000 a year: 200,000 in base rent from five suites, 22,000 from a rooftop cell tower lease, and 18,000 from a billboard easement on the parking lot frontage. Operating expenses run 80,000.

The owner's own P&L shows NOI of 160,000. The underwritten NOI is 120,000, because the tower and the billboard — 40,000 combined, seventeen percent of gross — never enter the calculation.

At a hypothetical annual debt service of 105,000, the owner's number produces coverage of about 1.52. The underwritten number produces about 1.14. The first sails through. The second sits just under the investor minimum, and the loan gets resized or restructured.

Nothing about the property changed. Only the definition of income did.

Know which ratio you have to clear

The coverage minimum depends on the program, and the difference between them is the difference between a resize and a decline.

Owner-occupied files are measured on Global DSC — total annual global net operating income against fifty percent of total annual personal debt obligations plus business and subject-property debt. The personal side of that calculation is its own subject; the [global DSCR page](/blog/global-dscr-how-personal-debt-affects-a-commercial-loan) covers it.

Both tracks also carry a 75% minimum occupancy requirement, stabilized over a 90-day trailing underwriting period.

The operating-business side

If the property is owner-occupied and the business inside it is being analyzed, a second exclusion list applies to the business cash flow: gains from asset sales, insurance claims, settlements, and investment income.

This one catches honest operators constantly, because those items sit on a real tax return with real supporting documents. A contractor who sold two trucks and a trailer in the tax year, or a restaurant that collected on a fire claim, shows a strong bottom line — and the strength is in a line that will not recur.

The practical consequence: if your best recent year is best because of a one-time event, that year will not carry the file. Plan on the underwritten figure being closer to your ordinary operating year than to your reported one.

The bank statement program excludes a different list

If income is being derived from twelve consecutive months of business bank statements, a third exclusion list governs — this one at the deposit level. The following deposits are not counted as income:

• Credit back from credit or debit returns
• Transfers from another account, including personal-to-business transfers
• Interest paid
• Payroll advance or working capital
• Rental income, which is excluded from the monthly business deposits
• Gift funds
• Interested-party contributions of 3% regardless of LTV on a purchase, and seller concessions
• SBA loans, COVID assistance, or any other kind of loan

Only the business operating account is used, only one account may determine qualifying income (up to two accounts for the operating business), and combining personal and business accounts is not permitted. Personal bank statements and personal digital wallet statements such as Venmo or Cash App personal are not acceptable — though deposits originating from Cash App Business, Venmo Business, or similar payment-processing platforms may be considered business revenue when the statements and documentation are sufficient to verify the deposits come from the borrower's business operations.

The rental income line deserves a flag. If you own the building through a holding company and rent to your own operating business, that rent is not income twice. It comes out of the deposit analysis.

What to do when a meaningful share of your revenue is excluded

Rebuild the statement before you apply

Take your own operating statement and produce a second version with the excluded lines stripped out. That second number is the one the file will be built on. Everything downstream — the loan amount you request, the price you offer, the cash you expect at closing — should be modeled off it.

Doing this yourself has a second benefit. When your submitted statement already segregates the excluded lines, there is no argument later about what a category contains, and no round of conditions asking you to break out "other income."

Size the request off qualifying NOI

The loan amount is constrained by whichever binds first: LTV or coverage. Maximum LTV runs to 80% for purchases with a 725 or higher FICO and 75% on cash-out or refinance, but those are ceilings, not entitlements. When excluded income is a large share of gross, coverage usually binds well before LTV does. Solve for the debt service your qualifying NOI supports, then work backward to the loan amount.

Document what does count, properly

For investor properties and multi-tenant owner-occupied files: two years of property operating statements or Schedule E plus year-to-date, a current rent roll, and executed leases with addenda for commercial tenants. On a purchase where the seller will not produce a rent roll or operating statements, reliance is placed on the appraiser's analysis — and the guideline is explicit that the seller's failure to produce historical data is not treated as a policy exception. The file still has to stand up; it just stands up on the appraisal.

Consider the program that changes the test

There is a defined path when coverage fails. An owner-occupied file under the complete or bank statement program that does not meet 1.20x Global DSC may be converted to No Doc Streamline. An investor file under the complete or lite program that does not meet 1.15x DSCR may be converted the same way.

The trade is real. No Doc Streamline requires a minimum FICO of 700, caps LTV at 75% on a purchase and 70% on a rate-and-term or cash-out refinance, and uses market rents for qualification purposes in all cases. That last point matters here more than anywhere: under this program the coverage test is built on the rents the appraiser used to derive value, so the ancillary income question largely stops being the deciding factor.

For context, the standard credit floor outside that program is a minimum FICO of 650 for the primary guarantor, with all other guarantors required to be at 640 or above. Pricing and leverage follow the guarantor with the highest middle score.

Do not relabel

The most expensive mistake is cosmetic reclassification — booking billboard revenue as "signage rent," or outside storage as "storage income," and hoping the category name carries it through. It does not. The analysis reads the lease, the rent roll, and the appraisal, and a fenced yard is a fenced yard in all three. A relabeled line that gets caught costs credibility across the whole file, not just that line.

If the excluded income is genuinely large — a park where RV pads are a third of revenue, a yard where outside storage carries the property — that is not a documentation problem. That is a structure problem, and it is better raised in the first conversation than discovered in the third week.

What this page does not do

This is not an approval, a pre-qualification, a rate, or a quote. Nothing here commits us to a loan amount or a structure on your property.

It does not tell you how your appraiser will treat any of these income streams in the value conclusion. The guideline addresses value directly only for park-owned trailers and outside storage income; for cell towers and billboards it is silent, and we have left it silent rather than fill the gap.

It does not cover expenses. Everything above concerns the income side of NOI. How operating expenses, management fees, replacement reserves and vacancy are underwritten is a separate analysis and is not addressed here.

It does not resolve the personal side of a Global DSC calculation, the park-owned-home question, or the loan amount and exposure limits that sit above all of this.

And it does not answer legal, tax, zoning or permitting questions — whether a billboard easement is assignable, how a settlement is characterized on a return, whether outside storage is a permitted use on your parcel. Those go to your attorney, your accountant, and your municipality.

Guideline SBC 08/03/2026 · Reviewed August 31, 2026

Published September 1, 2026 · Updated September 1, 2026