How to Set Credit Limits for B2B Customers

Credit limits protect cash flow. A limit set too low costs revenue; one set too high exposes the business to write-offs. Neither error is obvious until it's too late.

This guide covers how credit teams at distributors and manufacturers set limits: the inputs, the formulas, and the judgment calls that don't fit into a spreadsheet.

What a credit limit is (and what it isn't)

A credit limit is the maximum outstanding balance you'll extend to a customer at any point. It is not a spending cap per order. A customer who pays on time can carry balances up to their limit across multiple open invoices simultaneously.

Conflating the two creates customer service problems. A sales rep promises a $50,000 order to a customer with a $30,000 limit who already has $25,000 outstanding. Someone has to make an awkward call.

The inputs that matter

Three categories of information drive most credit decisions.

Financial strength. Pull the customer's financial statements if they'll provide them. Look at current ratio, total debt, and net profit margin. A customer with $10 million in revenue and $9.8 million in debt carries a different risk profile than one with the same revenue and clean books.

If financials aren't available (common with smaller buyers), look at trade references, bank references, and UCC lien filings. A string of liens suggests other creditors already got there first.

Payment history. For existing customers, your AR data tells you more than a credit bureau report. A customer who pays at 45 days on 30-day terms isn't slow. They're running a predictable float. Build that into the limit.

For new customers, trade references show how they pay in practice.

Industry concentration. A customer operating in a single industry or geography carries concentrated risk. When that sector turns, it turns fast. That doesn't disqualify them, but it should compress the initial limit until you've seen a payment cycle or two.

Two methods for setting the number

Percentage of net worth. Some credit managers set limits at 10–20% of a customer's tangible net worth. This anchors the limit to what the customer could absorb in a worst-case scenario. The limitation: private companies rarely share financials, so the calculation rests on estimates.

Projected spend. Estimate the customer's expected annual spend and divide by payment cycles. A customer planning $480,000 per year on 30-day terms carries roughly $40,000 outstanding at any point. Set the limit at $40,000–$50,000 with room for variance.

This method is practical and easy to explain to sales. It breaks down when customers don't know their own volume, which happens often with new accounts.

When to revisit limits

A limit set at onboarding shouldn't stay static for three years. Review limits annually at minimum, or trigger a review when:

• The customer requests an increase
• DSO for this account climbs more than 15 days above their baseline
• A credit monitoring tool surfaces a public event (bankruptcy filing, lawsuit, new lien)
• The customer's business changes materially (ownership, expansion, contraction)

Most credit teams operate in reactive mode: they raise limits when sales asks and review only when a payment misses. A proactive review calendar changes the posture.

Where software fits in

Setting limits for a small customer base by hand is manageable. At scale, with hundreds of accounts, varying payment histories, and financial data that changes quarterly, spreadsheets become a liability.

Credit management software consolidates the inputs and gives credit teams a structured way to set, track, and enforce limits across the portfolio. See how credit teams use software to manage limits at scale.

The judgment call no formula captures

Every method above produces a number. That number should inform the decision, not make it.

A startup with no financial history and a $200,000 initial order requires a judgment call based on industry knowledge, management credibility, and how much exposure the business can absorb. A formula that outputs $25,000 isn't wrong. It tells you what the data knows. The credit manager brings what the data doesn't.

The number is a floor for the conversation, not a ceiling.