Setting Customer Credit Limits in Wholesale: A Working System for Small Distributors

Wholesale runs on trade credit the way engines run on oil, and most small distributors manage that credit the same informal way: limits that exist vaguely in the owner's head, enforced whenever the owner happens to be paying attention, stretched whenever the customer's buyer is persuasive. The result shows up in every distribution book I have reviewed: two or three accounts quietly holding exposure equal to a month of the company's payroll, on terms nobody formally decided.

A credit limit system does not need enterprise software. It needs four components and the will to enforce them.

Component one: the starting limit formula

For a new account that passes a proportionate credit check, set the initial limit at 1.5 to 2 times expected monthly purchase volume. The logic: on net 30 terms with normal reorder rhythm, a customer naturally carries about one month of purchases as open balance; the multiplier leaves room for a growth order without leaving room for a runaway. A customer projecting $8,000 a month starts at $12,000 to $16,000. Thin files start lower with a deposit on the first order; flagged files start at prepayment until they build history with you, not with the credit bureau.

Write the limit into the account record and, crucially, into the customer's onboarding: "Your account is set up with a $15,000 credit line on net 30 terms." Stated limits get respected; secret limits get discovered mid-argument.

Component two: graduation, on behavior

Limits should move, in both directions, on data. My triggers: three consecutive on-time cycles earns a 25 to 50 percent increase, offered proactively ("we have raised your line to $20,000"), which customers experience as a relationship upgrade and which quietly rewards exactly the behavior you want. The first invoice past 15 days late freezes the limit; a second within six months cuts it toward current exposure. The aging report by customer is the input, reviewed on the same Friday rhythm, and the whole system runs on the payment-behavior file, who pays when, whose lateness is drifting, that your DSO trend aggregates and that we obsessively maintain per customer at RevCollect (bias disclosed).

Component three: the over-limit moment

The system's entire value concentrates in one moment: the order that would breach the limit while old invoices sit unpaid. The weak response is to ship it quietly, which converts your limit into fiction. The strong response is not refusal; it is a trade, delivered as routine operations:

"Tom, happy to get this $6,000 order moving. Your account is at $14,800 against the $15,000 line, with two invoices past due totaling $9,200. Clear those two and the order ships same day."

No apology, no drama, maximum leverage, because the moment a customer wants product is the one moment their AP urgency matches yours. Most over-limit conversations end with a payment that afternoon. For the customer who genuinely cannot clear and genuinely needs stock, structured options on your terms: partial payment releases partial order, or prepayment for the new order while the old balance goes on a written schedule. What never happens is silent shipping into a growing balance, because every silent exception re-teaches the account that the limit is decorative.

Component four: concentration review

Quarterly, one extra question over the same report: what share of total AR sits with the top three accounts? Past roughly 50 percent, your receivables are really three relationships wearing a ledger, and the response is deliberate: tighter monitoring on those accounts, credit insurance if the exposure justifies it, and a sales conversation about broadening the base, because the distributor who loses a 40-percent account to insolvency does not have a bad quarter, they have an existential event. Concentration is the risk the limit system cannot see one account at a time; someone has to look at the whole board.

Four components, one Friday habit, zero new software required to start. The distributors who run this system do not have fewer difficult customers. They have difficult customers with defined, priced, enforced boundaries, which in trade credit is the entire difference between a lending business and a hoping business.

FAQ

How do I calculate a credit limit for a new wholesale customer? Start at 1.5 to 2 times expected monthly purchases after a proportionate credit check; lower with a deposit for thin files; prepayment for flagged files. Graduate on payment behavior, not on requests.

What do I do when a customer exceeds their credit limit? Hold the new order and trade: clearing the past-due balance releases the shipment same day. Deliver it as routine process, and use the moment of purchase urgency, which is your maximum leverage.

Should I tell customers their credit limit? Yes, at onboarding and at every change. Stated limits function as shared rules; unstated limits function as ambushes and get litigated emotionally at the worst moment.

When should a distributor consider credit insurance? When any single account exceeds roughly a third of AR, or when top-three concentration passes half. Insurance prices the concentration risk you cannot diversify away quickly.