How lenders assess a business loan: cash flow, debt service, customer concentration and security

An underwriter reviewing a business loan is not scoring how good your business is. They are testing whether a specific amount of money, repaid on a specific schedule, is likely to come back with interest. Four questions carry most of the weight: does the business generate cash, can that cash cover the proposed payment alongside everything already owed, does revenue depend on too few customers, and what can be recovered if the first three answers turn out to be wrong. Understanding how each is tested is most of the work in learning how to acquire a business loan on terms you can live with.

The four questions, in the order they get asked

Commercial credit decisions are made against a lender's own written policy. The weight given to each factor shifts with the industry, the loan size and the lender's appetite, and there is no single national rule that sets a required ratio for business lending in Canada. What stays constant is the sequence of the analysis.

What they examine	What it answers	What weakens the file
Cash flow	Does the business actually collect money, and how much is left after operating costs?	Profit on paper that never arrives as cash; large month-to-month swings
Debt service	Can existing obligations plus the new payment be covered with a margin for error?	Layered debt, leases and owner-guaranteed loans already consuming cash
Customer concentration	How much revenue disappears if one relationship ends?	One customer supplying most of the revenue, with no contract or notice period
Security	What can be taken and sold if repayment stops, and how quickly?	Assets that are hard to value, already pledged, or specific to your process

Cash flow: earning is not the same as collecting

Cash flow is the first filter, and it is not profit. A business can report a profit while running short of cash if receivables sit unpaid, inventory builds, or revenue is recognized before the money arrives. Lenders look for the movement itself: deposits into the operating account, how quickly customers pay, and what remains after suppliers, payroll, rent and tax remittances.

Expect what you submit to be tested against bank records and tax filings. Where the two disagree, the explanation matters more than the gap — owner draws and salary, one-time costs, and revenue booked in a different period than the cash landed are all normal reconciling items.

Three features shape how a lender reads your cash flow:

• Direction and stability. A steady pattern is easier to lend against than a spike, because the lender is underwriting the next few years, not your best quarter.
• Seasonality. If most cash arrives in a few months, a repayment schedule that falls in the slow months creates pressure that shows up as missed payments.
• Working capital drag. Growth consumes cash. A business winning larger orders often needs more financing, not less, because it funds the work before it is paid.

Debt service: can the cash carry the payment?

Debt service is where cash flow becomes a yes or no. The lender builds a schedule of every obligation the business and its guarantors already carry — term loans, equipment leases, credit lines, vehicle payments, the owner's mortgage and personal debts — then adds the proposed payment and asks what is left. The result is usually expressed as a coverage ratio: cash available for debt service divided by total annual payments. Higher is stronger, and the minimum a lender will accept is set internally rather than published nationally.

Two features make this stricter than borrowers expect. First, the calculation covers the whole picture, not just the new loan; a modest additional payment can push an otherwise comfortable file past the limit. Second, where the owner's home financing sits at a federally regulated lender, that side of the file is assessed under Guideline B-20, which sets a total debt service ratio ceiling of about 44% and applies a qualifying stress-test rate above the contract rate. The stress test asks whether the mortgage would still be affordable if rates rose, and it consumes household capacity that might otherwise support a guarantee. Canadian fixed-rate mortgages are also compounded semi-annually by law, which affects how a quoted rate translates into real cost when personal property is pledged.

The legal outer limit on cost matters here too. Section 347 of the Criminal Code sets the criminal rate of interest at 35% per year, calculated using a defined method that aggregates interest and certain charges. That ceiling marks the boundary of lawful lending in Canada. Within it, pricing is a function of risk — weaker cash flow and thin security produce fewer options and a higher price, not a hidden fee.

Customer concentration: when one relationship is the business

Concentration is the risk that losing a single relationship removes a large share of revenue. An underwriter does not need a threshold to see it: a customer list with one dominant name, or sales that all run through one distributor, reads as fragility regardless of the exact share. The question underneath is what happens to repayments in the month after that customer leaves.

What changes the answer:

• Whether the revenue is contractual or at will, and how much notice is required to end it.
• How long the relationship has run and whether payment has been consistent.
• The customer's own financial health — a large buyer under pressure transfers that pressure to you.
• Whether the work is recurring supply or service, or a project that simply ends.

Concentration rarely kills a file by itself. It changes the structure: a smaller amount, a shorter repayment period, more security, a personal guarantee, or covenants requiring diversification. Where a contract exists, lenders may ask for notice of assignment so they are informed directly if it ends. Where the relationship is informal, expect the risk to be priced in.

Security: the lender's second way out

Security is what a lender can take and sell if the loan stops performing. Treat it as a second way out rather than a substitute for cash flow — an asset-backed loan still needs a repayment source, because enforcing security is slow, costly and often recovers less than book value. Typical security includes a general security agreement over business assets, specific charges on equipment or vehicles, assignment of receivables, a mortgage over commercial property, and a personal guarantee supported by a charge on the owner's home.

Home equity has a hard ceiling. At federally regulated lenders, home equity lines of credit are generally limited to 65% of appraised property value, with total secured lending usually capped at 80%. That limits how much of a home can be pledged, and provincial rules may differ for provincially licensed lenders. Before signing, understand that a guarantee is a legal commitment that can outlive the business; commitments of that size are worth reviewing with a regulated professional.

How to acquire a business loan: preparing the file

1. Reconcile your own numbers. Make sure your statements, tax filings and bank deposits tell one story before a lender spots the discrepancy.
2. Build a complete debt schedule. List every obligation of the business and the guarantors, with balances, payments and what secures each one.
3. Show the cash. Business bank statements, deposit history and a simple schedule of when money comes in and goes out carry more weight than a projection alone.
4. Document the revenue base. Contracts, purchase orders, notice periods and a customer list with revenue split by account.
5. Check your personal credit file. Canada has two national credit reporting bureaus, Equifax Canada and TransUnion Canada, and a free copy of your report is available from each. Because a guarantee ties the business loan to your personal credit, errors there cost real money.
6. Ask what security and guarantees are being taken. The answer determines what you are risking beyond the business itself.
7. Compare on total cost, not the headline rate. Fees, conditions and covenants decide what the loan actually costs you. The Government of Canada's business financing guidance is a reasonable starting point for the range of channels and programs that exist.

When the answer is no

A decline usually points at one of the four questions, and the useful move is to find out which. Thin cash flow may work at a smaller amount. A debt service problem may be solved by retiring or consolidating an existing obligation. A concentration problem may be answered with a contract, an assignment or a guarantor. A security problem may simply mean a different lender's appetite fits better.

If the constraint sits on the personal side, the rules are specific. Only a licensed insolvency trustee can administer a consumer proposal or bankruptcy, and trustees are regulated by the Office of the Superintendent of Bankruptcy Canada. A consumer proposal stays on a credit report for three years after completion, or six years from filing, whichever comes first, and a first bankruptcy stays for six years after discharge. Both affect the personal credit that often sits behind small business borrowing. If you have a complaint about how a lender handled your file, federally regulated financial institutions' consumer complaints go to the Financial Consumer Agency of Canada, while provinces license and supervise most other lenders and each has a consumer protection office.

Why the same file gets different answers

Two lenders can read identical financial statements and reach different conclusions, because each applies its own policy, industry appetite and security requirements. Comparison is how you see that range before you commit, and the Government of Canada's financing information explains the broader landscape of business funding in Canada. None of it replaces the underwriter's four questions, but it tells you where to look when one of them is the obstacle.

loanloon.ca is a matching and comparison service for Canadian borrowers. It is not a lender: it does not make loans, set rates or make credit decisions. The lowest rates and most flexible terms are only ever available to the most qualified applicants — those with documented cash flow, comfortable debt service, a diversified revenue base and acceptable security. If your file is weaker in one of those four areas, expect fewer options and a higher price, and treat any offer that suggests otherwise with suspicion.

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• Government of Canada — business financing — Government of Canada