Credit limits are one of the most uncomfortable conversations in distribution. Set them too low and you slow down your best accounts. Set them too high and you're financing customers who may never pay. Get the communication wrong and a routine policy decision turns into a lost account. Most distributors either avoid the conversation entirely — extending unlimited credit to anyone who asks — or handle it so bluntly that accounts feel like they're being accused of something. There's a better way.
Why Credit Limits Matter More Than You Think
The average small distributor carries 30 to 45 days of accounts receivable on the books at any given time. For a business doing $2 million in annual revenue, that's $165,000 to $247,000 tied up in unpaid invoices. When one or two accounts stretch to 60 or 90 days — or go dark entirely — the cash flow impact is immediate and painful. A $40,000 bad debt write-off can wipe out six months of net profit for a business operating on 3% margins.
Credit limits aren't about distrust. They're about managing risk exposure to any single account the same way a bank manages loan exposure to any single borrower. Framing it this way — internally and externally — changes the entire nature of the conversation.
How to Assess Creditworthiness
Before you set a limit, you need information. For new accounts, that means a credit application. A basic credit application should collect: business legal name, years in operation, three trade references (suppliers they currently buy from on terms), banking information (bank name and account type — you don't need the account number), and authorization to run a business credit check.
For business credit checks, the main sources are Dun & Bradstreet (D&B PAYDEX score), Experian Business, and Equifax Business. D&B is the most widely used in distribution. A PAYDEX score above 80 indicates the business pays on time. Below 70 is a yellow flag. Below 50 is a red flag that warrants either a lower limit or prepay terms until a payment history is established.
For existing accounts, your own payment history is the best data you have. An account that has paid every invoice within terms for 24 months has demonstrated creditworthiness through behavior. An account that regularly stretches to 45 days on a net-30 agreement is already showing you what to expect at higher exposure.
Credit Limit Formulas That Work
The most common formula used by distributors is the 2x monthly average order rule: calculate the account's average monthly order volume over the past 3 to 6 months, then set the credit limit at 2x that number. This gives the account enough room to place orders and have invoices outstanding simultaneously without hitting the limit under normal operating conditions, while capping your exposure at roughly 60 days of their purchase volume.
Example: An account places $8,000 in orders per month on average. Their credit limit is set at $16,000. At any given time, they might have one invoice from 30 days ago ($8,000) and a new order being processed ($8,000). They're at their limit, which means a new order triggers a payment conversation before it ships — exactly what you want.
For new accounts with no history, start conservative: $2,500 to $5,000 depending on your average order size, with a clear path to a higher limit after 90 days of on-time payment. Communicate this explicitly: "We start new accounts at $5,000 and review for increases after the first quarter based on payment history."
A second formula used by larger distributors is 10% of the account's annual revenue — the idea being that no single supplier should represent more than 10% of a business's annual purchasing, so your credit exposure should be proportional to their size. This requires knowing or estimating the account's revenue, which is feasible for established businesses but difficult for smaller or newer accounts.
When to Require Prepay Instead of Terms
Some accounts shouldn't get net terms at all, at least initially. Require prepay when any of the following are true:
- The business has been open less than 12 months
- The credit application reveals no trade references or references that don't check out
- A credit check shows a PAYDEX score below 50 or significant derogatory payment history
- The account has previously gone delinquent with you or another distributor
- The order is for an unusually large one-time purchase with no established relationship
Prepay is not a punishment — frame it as a starting point. "We require prepayment for first orders from new accounts while we establish a credit history together. After 90 days of activity, we'll review for a credit line." This is standard practice at major distributors and most professional buyers understand it.
How to Communicate Limits Without Losing Accounts
The communication matters as much as the decision. Three principles:
1. Be proactive, not reactive. Tell accounts what their limit is when you set it — don't wait for an order to be declined. Send a short note when an account is approved: "Your account has been set up with a $10,000 credit line on Net 30 terms. Orders that would exceed this limit will require partial prepayment or payment of outstanding invoices before release." No surprises means no anger.
2. Give accounts agency. If an account wants a higher limit, have a process: updated credit application, 90 days of payment history with you, or a personal guarantee for smaller businesses. Framing it as "here's how you qualify for more" is far better than "no."
3. Separate the credit conversation from the relationship conversation. When an account hits their limit, have your accounting team make the call — not the sales rep. The rep's job is to protect the relationship. The accounting team's job is to collect. Mixing these roles creates awkward conversations that damage both.
Building Credit Limits Into Your Ordering System
A B2B ordering portal can enforce credit limits automatically: when an account's outstanding balance plus their pending order exceeds their limit, the portal flags it before the order is submitted — not after it hits your warehouse. The account sees a clear message ("Your current balance is $9,200. Adding this $1,500 order would exceed your $10,000 credit limit. Please pay outstanding invoices or contact us to adjust your limit.") rather than placing an order that gets silently held.
This removes the most uncomfortable part of the conversation — catching the situation early, in the system, before product has been picked — and turns a potential conflict into a routine administrative step.