How banks assess revenue composition and customer concentration before lending
High revenue does not necessarily mean stable cash flow. If sales depend heavily on one customer, contract or related customer group, losing that counterparty can sharply change the business’s ability to service debt.
Banks reconcile reported revenue to account receipts, analyse sales by customer, contract, activity and period, then test whether repayment sources survive a decline in the largest customer’s purchases. There is no universal acceptable concentration percentage: sector, contract stability, margins, customer payment behaviour and liquidity all matter.
Why banks analyse more than revenue totals
Two businesses with identical annual revenue can present very different credit risks. One has hundreds of regular customers, short payment terms and even receipts; the other has one major customer, long credit terms and a contract expiring before the loan matures.
Losing one customer will not usually destroy the first business’s entire cash flow. For the second, late payment, reduced purchasing or contract termination may simultaneously cut revenue, create a cash flow gap and remove the main repayment source.
Dependence on one customer
Losing the largest buyer may leave insufficient cash flow for bank payments.
Short contract horizon
The main current revenue contract does not cover the planned loan term.
Misleading turnover
Internal transfers, loans and refunds are mistakenly treated as operating receipts.
Related customers
Several legal entities may actually represent one group and one risk source.
How revenue can be broken down
An aggregate revenue line is insufficient for credit analysis. Banks may request management breakdowns to establish who generates sales, what customers pay for and the stability of each source.
| Breakdown | What is checked | Risk identified |
|---|---|---|
| Customers | Largest customer and top-five shares | Dependence on a limited set of counterparties |
| Contracts and projects | Term, volume, milestones and termination rights | Whether the revenue source expires before the loan |
| Goods and services | Activities generating sales and margin | Dependence on one product or an unstable segment |
| Customer sectors | Who the company sells to | Simultaneous weaker demand among customers in one sector |
| Regions and countries | Sales and settlement geography | Logistics, currency and regional restrictions |
| Periods | Monthly and quarterly trends | Seasonality, one-off spikes and sustained decline |
| Sales channels | Direct contracts, marketplaces and dealers | Dependence on one platform or intermediary |
Related parties are checked separately. If five customers belong to one group, depend on one owner or pay for one project, apparently diversified revenue may remain economically concentrated.
How to calculate customer concentration
Calculate each customer’s share of substantiated revenue for a comparable period. For seasonal businesses, also calculate peak- and off-season shares; for project businesses, analyse completed and current contracts.
Shows the share of sales dependent on one counterparty.
Shows whether sales extend beyond a narrow key-customer group.
Shows whether the main sales source is growing or shrinking.
There is no single regulatory threshold automatically making a business too concentrated. Banks apply their own methods and assess relationship history, contract quality, margins, diversification and cash reserves together.
Why the same customer share can receive different assessments
Concentration is more than a percentage. One large customer may underpin a stable business; another may create unpredictable risk. Banks assess the commercial substance of the relationship.
- Relationship history. Several years of stable deliveries carry more weight than one large contract.
- Contract term. It should support cash flow throughout debt servicing.
- Actual performance. Shipments, completion records, invoices, payments and material disputes are checked.
- Payment discipline. Actual delays matter, not only credit terms on paper.
- Termination provisions. The ability to cancel volume quickly increases uncertainty.
- Customer’s financial condition. A financially strong customer reduces non-payment risk but not dependence on it.
- Customer-level margin. Large low-margin sales may leave less for debt service than a smaller diversified portfolio.
- Replaceability. The bank assesses how quickly capacity could be redirected to other customers.
How concentration affects cash flow and loan limits
Revenue follows accounting rules; loans are repaid with cash. Banks therefore reconcile sales, statements, receivables and customer payment schedules. A key concern is whether the main customer generates most profit but pays on long or unpredictable terms.
Prepare base and conservative scenarios. In the conservative case, delay, reduce or temporarily exclude the largest customer’s receipts. Recalculate free cash flow, peak shortfalls and coverage of existing and proposed loan payments.
If funding is needed specifically while awaiting that customer’s payment, the bank also checks product suitability. Substantiated receivables may suit factoring; regular purchases supporting stable sales may suit a revolving facility; a brief business account gap may suit an overdraft.
Documents supporting revenue composition
| Document | What it should show |
|---|---|
| Trial balances and sales account analyses | Customer-level revenue reconciled to financial statements |
| Sales register | Counterparty, contract, date, amount, goods or services and payment status |
| Statements for every account | Actual operating receipts excluding internal transfers and loans |
| Contracts and schedules | Subject, volume, term, payment procedures and termination conditions |
| Russian universal transfer documents (UPD), delivery notes and completion certificates | Actual performance of customer obligations |
| Receivables breakdown | Unpaid sales, terms and overdue balances for each customer |
| Management profit and loss statement | Margins by activity, project or key customer |
| Sales plan and order book | Revenue sources after the reporting date and throughout the loan term |
Breakdowns should reconcile at the same date. Explain differences between accounting revenue, sales registers and account receipts in advance: VAT, advances, returns, intra-group revenue, exchange differences and credit sales.
Example: a company with RUB 120 million in revenue
A company requests RUB 12 million for working capital. Substantiated revenue over the last 12 months is RUB 120 million. Sales appear sufficient, but their composition reveals material dependence.
| Customer | Revenue | Share | Feature |
|---|---|---|---|
| Customer A | RUB 54 million | 45% | Contract expires in 8 months |
| Customer B | RUB 18 million | 15% | Relationship exceeds three years |
| Customer C | RUB 12 million | 10% | Payments regularly delayed |
| Others | RUB 36 million | 30% | 18 small customers |
The largest customer contributes 45% and the top three 70%. This does not itself mean rejection. However, the main contract is shorter than the proposed loan term and customer C pays inconsistently.
Strong preparation includes performance history for customer A, planned renewal evidence or new orders, customer-level margins and a stress scenario excluding some A receipts. If loan payments are not covered, reduce the request, increase own funding or choose financing tied to a specific operating cycle.
Preparing revenue composition for an application
Use consistent periods and exclude non-revenue transactions.
Show the economic group even where contracts involve different legal entities.
Compare periods and explain sharp changes.
Separate revenue from loans, refunds, internal transfers and advances.
The repayment source should remain throughout the financing horizon.
Assess large sales alongside profitability and actual payment timing.
Test business cash under reduced or delayed key-customer receipts.
Show new customers, current negotiations and substantiated orders.
Mistakes that weaken a loan application
Showing only total revenue
Without customers and contracts, the bank cannot assess income source stability.
Treating every receipt as revenue
Loans and internal transfers inflate turnover without generating operating income.
Splitting one group into several customers
Formal diversification does not remove a shared economic risk.
Ignoring contract duration
Past revenue does not substantiate future cash flow after expiry.
Omitting margins
High turnover may leave almost nothing for debt service.
Promising diversification without evidence
Letters, orders and signed contracts are more persuasive than a general forecast.
Need to prepare revenue for bank analysis?
NG Finance can help reconcile revenue and turnover, assess customer concentration, test cash flow resilience and substantiate the funding amount.
Request an assessmentFrequently asked questions
Does a high single-customer share mean rejection?
No. Banks assess relationship history, contract quality, payments, margins, replaceability and resilience in a stress scenario.
Which periods should revenue composition cover?
Monthly figures for at least 12 months are useful; use a longer comparable period for seasonality or sharp changes.
What counts as revenue in the analysis?
Sales of goods, work or services supported by accounts and source documents. Remove loans, refunds and internal transfers from bank receipts.
Must end customers be disclosed when using an agent?
It depends on the model and bank requirements. A clearer actual demand and cash source helps assess both intermediary and end-customer risk.
How should marketplaces be treated?
Distinguish the platform as payer from actual sales diversification. Show fees, deductions, returns and dependence on one channel.
Are different companies within one group separate customers?
Legally they are separate, but the bank may aggregate them for concentration analysis if they share control or a project.
What if the main contract expires soon?
Show renewal, a new contract, substantiated orders or a conservative calculation demonstrating debt service without the former volume.
Can factoring reduce concentration risk?
Factoring can accelerate cash from substantiated receivables but does not remove dependence on one sales source.
Conclusion
Revenue quality matters more than a large total. Clear customer composition, contract terms, actual payments, margins and cash flow under a key-customer loss allow a more accurate credit assessment. Explain concentration rather than conceal it, showing that debt remains serviceable under reasonable deterioration.
Official materials
- Bank of Russia: guidance on borrower financial assessment and Regulation No. 590-P
- Federal Tax Service of Russia: state accounting statements information resource
- FSBU 4/2023 “Accounting (Financial) Statements”
This material is for information. Documents, internal assessment methods, acceptable concentration and financing decisions depend on the bank, product, sector and transaction.