C&I Lending: How Banks Underwrite a Commercial & Industrial Loan

C&I lending is commercial and industrial lending: bank credit extended to operating businesses for working capital, equipment and growth, repaid out of the company's cash flow rather than the sale of real estate. Banks underwrite a C&I loan by spreading the borrower's financial statements and tax returns, rebuilding cash flow from the bank statements, calculating debt service coverage and leverage, and weighing the 5 Cs of credit before assigning a risk rating. This guide walks through how that underwriting works, the benchmarks underwriters use, and where credit teams cut the slow part of the analysis.

What is C&I lending?

C&I lending is bank financing to businesses for operating and capital needs, secured mainly by the company's cash flow and operating assets rather than by commercial real estate. It is one of the largest categories on most bank balance sheets and the FDIC examines it as its own discipline. The three common structures are revolving lines of credit for working capital, term loans for equipment and expansion, and asset-based lines that advance against receivables and inventory. What ties them together is the repayment source: a C&I loan is paid back from the borrower's ongoing cash flow, so the entire underwriting turns on whether that cash flow is real, durable and large enough to cover the debt.

How do banks underwrite a C&I loan?

Banks underwrite a C&I loan by analyzing the borrower's cash flow and balance sheet, calculating coverage and leverage ratios, and grading the result against the 5 Cs of credit. The underwriter spreads the income statements, balance sheets and tax returns into a standard format, reconstructs operating cash flow, cross-checks it against several months of business bank statements, then computes debt service coverage, leverage and liquidity. Those numbers, plus the qualitative read on management, collateral and industry conditions, drive the risk rating that sets approval and pricing. C&I underwriting is cash-flow-first: collateral matters, but a C&I loan is repaid from operations, not from selling a building, so the cash flow has to stand on its own.

What is the C&I underwriting process step by step?

The C&I underwriting process moves from documents to spread to decision. An underwriter collects and verifies the borrower's financials, spreads them, builds the cash flow and ratios, weighs the qualitative factors, and writes a credit memo that recommends a structure and rating. Each step feeds the next, and the slow part lives at the front, in pulling the numbers off the documents.

Step	What the underwriter does
1. Collect and verify	Gather business and personal tax returns, year-end and interim financial statements, an accounts receivable and payable aging, a business debt schedule, and several months of bank statements
2. Spread the financials	Key revenue, expenses, assets and liabilities into a standard spread so multiple years are comparable side by side
3. Build cash flow	Reconstruct operating cash flow, add back non-cash and discretionary items, and cross-check against bank-statement deposits
4. Calculate ratios	Compute debt service coverage, leverage (debt-to-worth), liquidity and trend versus the bank's benchmarks
5. Weigh the 5 Cs	Score capacity, capital, collateral, character and conditions, and assign a credit risk rating
6. Write the credit memo	Recommend a loan amount, structure and covenants, with every figure traceable to its source document

How do banks analyze cash flow in a C&I loan?

Banks analyze C&I cash flow by rebuilding the borrower's true operating cash flow and dividing it by total debt service. The underwriter starts from net income, adds back depreciation, amortization, interest and one-time or owner-discretionary items, and confirms the result against the deposits and balances in the business bank statements. That cross-check matters: tax returns understate cash flow through non-cash deductions, and bank statements show what actually moved. The output is cash flow available for debt service, the numerator of the debt service coverage ratio. For the mechanics of the add-backs, see our guide to calculating add-backs in business cash flow, and for the combined business-plus-guarantor view, global cash flow analysis.

What DSCR do C&I lenders require?

Most C&I lenders look for a debt service coverage ratio of 1.25x or higher, meaning the business generates at least $1.25 of cash flow for every $1.00 of debt payments. Some banks accept a lower floor on stronger, well-collateralized credits and push for more on thinner ones, and many also calculate a global DSCR that folds in the guarantor's personal cash flow. The exact threshold belongs to each bank's credit policy, but 1.25x is the common benchmark for a clean Pass. Below it, the loan needs a compensating strength, more collateral, a stronger balance sheet, a guarantor with surplus cash flow, or it gets declined or repriced.

Metric	What it measures	Typical C&I benchmark
Debt service coverage (DSCR)	Cash flow available to cover total debt payments	1.25x or higher for a clean Pass
Global DSCR	Combined business and guarantor capacity	Around 1.10x to 1.25x
Leverage (debt-to-worth)	Total debt relative to tangible net worth	Lower is stronger; varies by industry
Current ratio	Current assets to current liabilities	Generally above 1.0x, more cushion is better
Time in business	Operating history a lender wants to see	Roughly two years or more

The benchmarks are guidelines, not formulas; a bank weighs them together and against the borrower's industry. For the full mechanics of the coverage figure, see our debt service coverage ratio guide.

What documents are needed for C&I underwriting?

A C&I credit file is several document types, not one form. The underwriter needs enough to build a defensible cash flow and balance-sheet picture and to see what debt the business already carries. A typical C&I package includes the items below.

Document	What it tells the underwriter
Business tax returns (2 to 3 years)	Reported revenue, margins and the starting point for cash flow
Personal tax returns of the guarantors	Outside income and obligations for the global cash flow
Interim financial statements	Current-year performance between tax filings
Business bank statements (3 to 6 months)	Actual deposits, average daily balance, NSF activity and existing payments
Accounts receivable and payable aging	Collection quality and short-term obligations
Business debt schedule	Existing loans, payments and collateral already pledged

The aging and the business debt schedule tell the underwriter what is already competing for the borrower's cash flow, which is exactly what determines how much new debt the company can carry.

How do the 5 Cs apply to C&I lending?

The 5 Cs of credit are the qualitative frame around the numbers. Capacity is the cash flow question: can the business service the debt, measured by DSCR. Capital is how much the owner has at risk; a thin balance sheet with little equity is a weaker credit. Collateral on a C&I loan is usually the company's operating assets, receivables, inventory and equipment, rather than real estate, so its value and liquidity matter. Character is the management track record and credit history. Conditions are the industry and economic environment the business operates in. A strong C&I credit clears all five; a weakness in one has to be offset by strength in another, and that trade-off is the heart of the credit memo.

What is the difference between C&I and CRE lending?

C&I and CRE (commercial real estate) lending differ in repayment source and what the loan is underwritten against. A C&I loan is repaid from the borrower's business operations and underwritten on operating cash flow, with operating assets as collateral. A CRE loan is repaid from property income, rent on an investment property or the operating cash flow of an owner-occupied building, and underwritten on the property's net operating income and value, with the real estate as collateral. The ratios overlap, both lean on DSCR, but a CRE underwriter also weighs loan-to-value, lease quality and the property itself, while a C&I underwriter is focused on the strength and durability of the business's cash flow. For the property side of that analysis, see how commercial real estate underwriting software turns operating statements and rent rolls into net operating income and debt service coverage; ground-up projects add a third variant with their own sponsor tests, covered under construction loan underwriting software.

How can banks speed up C&I underwriting?

The slow part of C&I underwriting is not the credit judgment; it is the data entry that comes first. Spreading several years of tax returns and financial statements and rebuilding cash flow from bank statements can take an underwriter 30 to 60 minutes per borrower before any analysis happens, and one transposed figure flows straight into the DSCR and the rating. Pulling those line items automatically removes the bottleneck and the transcription risk. Credit analysis software reads the returns, financial statements and bank statements, extracts every figure, and computes the cash flow, debt service coverage and leverage a C&I decision turns on, with each value traceable to its source so a reviewer verifies instead of re-keys. The same extraction feeds cash flow analysis software, financial spreading software and the broader loan underwriting software workflow, so the underwriter spends time on structure and judgment, not on building the spread.

Once a C&I credit is approved, the file still has to close. Many teams export the borrower's statements to a clean workpaper with a bank statement to Excel converter, track the borrower's insurance as a closing condition on secured equipment and asset-based facilities with certificate of insurance tracking software, and get the executed loan agreement signed through an online document e-signing tool. Each step sits downstream of the credit decision, so the underwriting stays the focus and the rest is mechanical.

Frequently asked questions

What does C&I stand for in lending?

C&I stands for commercial and industrial. C&I loans are bank credit extended to operating businesses for working capital, equipment and growth, repaid out of the company's cash flow rather than from real estate. It is a distinct category from CRE (commercial real estate) lending and consumer lending, and banks track and examine it separately.

What is the most important factor in C&I underwriting?

Cash flow is the most important factor in C&I underwriting. Because a C&I loan is repaid from business operations, the underwriter's central question is whether the company generates enough durable cash flow to cover the debt, measured by debt service coverage. Collateral, capital and the qualitative 5 Cs all matter, but they support or offset the cash flow conclusion rather than replace it.

What credit score do C&I borrowers need?

There is no single cutoff, but banks generally want the business owners and guarantors to have solid personal credit, often a FICO in the 680 or higher range, alongside strong business financials. The owner credit score is one input into the character and capacity assessment, not the decision itself; a strong score will not carry a loan whose cash flow does not cover the debt, and a clean, well-capitalized business can clear a softer score.

Can C&I underwriting be automated?

The data work behind C&I underwriting can be automated; the credit judgment stays with the underwriter. Software extracts the tax returns, financial statements and bank statements and computes the cash flow, DSCR and leverage automatically, so the underwriter applies the bank's credit policy to clean, traceable numbers instead of building the spread by hand. That removes the slow, error-prone keying while leaving the decision with the credit team.