Commercial loan underwriting weighs two things at once: the value of the property or asset that secures the loan, and the operating cash that will repay it. A small business loan leans on cash flow alone. A commercial loan adds collateral, guarantors and a longer term, so the review has more parts.
How is commercial loan underwriting different from small business underwriting?
Commercial loan underwriting differs from small business underwriting in size, security and depth. The loans are larger, they are usually secured by real estate or major assets, and the lender tests the borrower, the property and every guarantor, not just recent deposits. The review also takes longer.
The two share a goal and many documents. Both ask whether the business can repay, and both read bank statements. The differences come from what is at stake.
| Feature | Small business loan (typical) | Commercial loan (typical) |
|---|---|---|
| Size | Tens of thousands to low hundreds of thousands | Hundreds of thousands to many millions |
| Security | Often unsecured or a blanket lien | Real estate or major assets, with a recorded lien |
| Main repayment test | Deposits and balances | Debt service coverage on operating income |
| Collateral review | Light | Appraisal, title, sometimes environmental review |
| Guarantors | One owner, personal guarantee | One or more, each with a personal financial review |
| Term | Months to a few years | Often 5 to 25 years |
| Time to decision | Hours to weeks | Weeks to months |
Each row follows from the size. A lender making a $1,000,000 loan for 25 years cannot rely on six months of deposits. It needs to know that the property will hold its value, that the business will still earn enough in year eight, and that the people standing behind the loan can cover a shortfall.
Bank statements keep a place in this process, but their role changes. In a small business file they are the main evidence. In a commercial file they confirm the financial statements and tax returns, test cash behavior and show how the borrower and guarantors actually move money. Statements catch what a tidy financial statement can hide.
Commercial lenders also tie terms to the review. They may set covenants, such as a minimum coverage ratio tested each year, a reporting schedule or a requirement to keep operating accounts with the lender. Those terms are a form of ongoing underwriting.
If you want the small business side first, the process is laid out in what documents start business loan underwriting. The rest of this guide covers the parts that are specific to commercial files.
DSCR and LTV in commercial loan underwriting
DSCR and LTV are the two core ratios of commercial loan underwriting. Debt service coverage ratio (DSCR) divides the income available for debt payments by the debt payments themselves. Loan-to-value (LTV) divides the loan amount by the property's appraised value. One tests repayment, the other tests the cushion.
DSCR is net operating income divided by annual debt service. Net operating income is the income left after operating expenses and before debt payments. Annual debt service is the total principal and interest due in a year. A DSCR of 1.00 means the income exactly covers the payments. Above 1.00 leaves a margin. Lenders set minimums in their own policies, and the minimum varies with property type, borrower strength and the lender's appetite. Treat any figure in a blog post, including the ones below, as an example.
LTV is the loan amount divided by the lesser of the purchase price or the appraised value. A 75% LTV means the lender finances three quarters of the value, and the owner supplies the rest. Lower LTV leaves more room if the lender must sell the property to recover the debt. Lenders also set LTV limits by property type, since a general-purpose building is easier to resell than a special-purpose one.
The two ratios catch different problems. A loan can show a strong DSCR and a high LTV: the business earns well today, but the lender has little cushion if values fall. A loan can show a low LTV and a thin DSCR: plenty of collateral, but income that barely covers the payment. Most policies require both to pass.
Here is how each ratio is built in practice.
- Find the income figure. For an investment property, this is rent less operating costs. For an owner-occupied property, it is the operating business's earnings before interest, taxes, depreciation and amortization (EBITDA), adjusted for any rent the business will no longer pay.
- Calculate the debt service from the loan amount, rate and amortization. Include existing debt that stays in place.
- Divide income by debt service to get DSCR.
- Divide the loan by the property value to get LTV.
The worked example in the next section uses all four steps. For how a statement-based screen compares with this ratio, see the note on debt payments as a share of deposits. That screen is a rough proxy. DSCR is built from operating income, not from deposits.
Global cash flow in commercial loan underwriting
Global cash flow combines the income and debts of the business and every guarantor into one coverage figure. Commercial loan underwriting uses it when the owner stands behind the loan, because the owner's personal income and personal debts affect whether the business debt gets paid.
A business DSCR looks only at the company. Yet an owner who guarantees the loan will, in a bad year, pay from personal resources, and an owner who carries a heavy personal mortgage has less to give. Global cash flow brings both sides into one calculation.
The method has four steps:
- Add the business's cash flow available for debt service.
- Add each guarantor's personal income, such as wages, rental income and distributions not already counted in the business.
- Subtract personal taxes and a living expense allowance for each guarantor.
- Divide the result by all debt service: the new loan, other business debt and the guarantors' personal debt payments.
Each line needs a source. Business income comes from tax returns and financial statements. Personal income comes from personal returns and pay records. Debt payments come from the credit report and, importantly, from the bank statements. Statements show what is actually paid each month, which sometimes differs from what the credit report lists.
A worked example
The numbers below are an example for an owner-occupied building with one guarantor. They are not market figures.
The loan. A business buys the building it operates from. The appraised value is $1,500,000. The loan is $1,125,000, which gives an LTV of 75%. The rate is 7% with a 25-year amortization, so the payment is about $7,951 a month, or about $95,400 a year.
Business DSCR. The business earns $210,000 EBITDA, counting the rent it will no longer pay. It also carries an equipment loan with $24,000 in annual payments.
| Line | Amount (example) |
|---|---|
| Business EBITDA | $210,000 |
| New loan debt service | $95,400 |
| Existing equipment loan | $24,000 |
| Total business debt service | $119,400 |
| Business DSCR | 1.76 ($210,000 / $119,400) |
Global cash flow. The guarantor adds $60,000 of income from outside the business. Personal taxes are $18,000 and the living expense allowance is $36,000. The guarantor's personal mortgage and other loans cost $30,000 a year.
| Line | Amount (example) |
|---|---|
| Business EBITDA | $210,000 |
| Guarantor outside income | $60,000 |
| Less personal taxes | ($18,000) |
| Less living expenses | ($36,000) |
| Cash available for debt service | $216,000 |
| New loan | $95,400 |
| Equipment loan | $24,000 |
| Guarantor personal debt | $30,000 |
| Total debt service | $149,400 |
| Global DSCR | 1.45 ($216,000 / $149,400) |
Both ratios clear a 1.25 cutoff, which is a common example of a minimum but not a universal one. The global figure is lower because personal debt and living costs share the same income. If the guarantor's personal mortgage were $70,000 a year instead, global DSCR would fall to about 1.14, and the file would need a second look even though the business ratio stayed at 1.76.
That is the point of the exercise. A business can look strong while its owner is stretched, and the loan is only as safe as the weaker of the two.
Operating account statements in commercial loan underwriting
Operating account statements show the cash the borrower's business actually received and spent. In commercial loan underwriting they confirm the tax returns and financial statements, test the income figure behind the DSCR and reveal obligations that other documents leave out.
An underwriter does five things with them.
Reconcile revenue. Monthly deposits, less transfers and non-revenue credits, should line up with the revenue on the financial statements. A gap of a few percent is normal, since deposits follow cash timing while statements follow accounting periods. A large gap needs an explanation.
Test the income trend. The financial statements may give annual figures. Statements give monthly ones, so they show whether the latest quarter is stronger or weaker than the year. A DSCR built on last year's income overstates capacity if deposits are falling.
Find the debt. Recurring debits to lenders, lessors and finance companies should match the debt schedule. A payment with no match is an undisclosed obligation, and it belongs in the debt service line.
Check liquidity. The lowest balance each month, overdraft events and NSF items show whether the business runs tight. A building loan with a payment of $7,951 a month needs the account to hold that amount on payment day.
Look at owner activity. Draws, personal expenses paid from the business account and transfers to related entities show how much cash leaves for the owners. Those flows matter to the global cash flow figure.
Reading 12 or more months of statements across several accounts is slow by hand. TrueBankFlow lines them up month by month, calculates total and qualifying deposit averages, labels transfers between uploaded accounts and flags unusual transactions, each total linked to its lines; the DSCR and the credit decision stay with the underwriter. Teams comparing tools can read the guide to cash flow analysis software for lenders.
When do operating statements mislead commercial loan underwriting?
Operating statements mislead when they show only part of the business, when deposits include money that is not revenue, or when the account does not reflect the real cost structure. In commercial files, a misleading statement can inflate DSCR enough to turn a decline into an approval.
Watch for these cases.
- Related-party revenue. Deposits from an affiliate owned by the same people can be genuine, but may not continue after closing. Ask who the largest payers are, and whether any are related.
- Rent changes after purchase. In an owner-occupied purchase, the business stops paying rent to a landlord. If the former landlord is a related party, the rent saved is counted in EBITDA, but the lender should confirm that the rent line in the statements is what the file says it is.
- Pass-through and trust funds. A property manager, escrow agent or title company may move client money through the account. Those deposits are not the owner's revenue.
- Multiple entities. The operating company, the real estate company and a management company may each hold accounts. Statements from one entity understate or overstate the group.
- Cash timing. Large customer prepayments or a late-paying client can swing a month. Compare several months, not one.
- Owner-paid costs. Costs paid from a personal account never appear on the business statement, so business income looks better than it is.
- Window mismatch. The statements stop before a known event, such as the loss of a major customer.
The fix for most of these is a plain question to the borrower, followed by a document that answers it. Agreement between the tax return, the financial statements and the statements is a good sign. Disagreement without an explanation is the signal to slow down.
Where a commercial borrower also uses short-term advances, the statements show the debits, and the guide to merchant cash advance underwriting explains how those positions are spotted. Lenders who fund smaller operators from deposits alone may prefer business loans based on bank statements.