Consumer debt has a rulebook. Your B2B invoice doesn't.

If you've ever been chased for a personal debt, you know there are rules. A collector can't call you at 6 a.m. or at midnight. They can't ring you fifteen times in a day. They can't harass you, and they can't blast your debt across social media for the world to see. Most business owners assume some version of those same guardrails applies when a customer stops paying an invoice — either protecting the customer, or constraining what you're allowed to do to get paid. They don't. The federal rulebook that governs debt collection was written for consumers, and a B2B invoice sits entirely outside it.

What the consumer rulebook actually says

The main federal law here is the Fair Debt Collection Practices Act, implemented through the Consumer Financial Protection Bureau's Regulation F. It's specific and strict. Collectors are generally barred from contacting a person before 8 a.m. or after 9 p.m. They may not harass anyone "over the phone or through any other form of contact, including text or email," in the CFPB's words. And under Regulation F's call-frequency rule, a collector is presumed to be violating the law if they place more than seven calls within seven consecutive days about a particular debt, or call again within seven days of actually speaking with the person about it.

That's a real, enforceable structure — times of day, contact methods, a hard cap on how often the phone can ring. It exists because Congress decided individuals needed protection from abusive collection tactics.

Your invoice isn't in it

Here's the part that surprises people. Regulation F defines a "debt" as an obligation "arising out of a transaction in which the money, property, insurance, or services … are primarily for personal, family, or household purposes." The CFPB says it plainly: the law "covers the collection of debts that are primarily for personal, family, or household purposes. It doesn't cover business debts."

An unpaid invoice between two companies is, by definition, a business debt. It was never for personal, family, or household use. So the 8-a.m.-to-9-p.m. window, the seven-calls-in-seven-days limit, the federal harassment definitions — none of the FDCPA's specific machinery attaches to a commercial account. The rulebook you were picturing simply doesn't apply to the money your customer owes you.

Why that cuts both ways

It's tempting to read "no federal rulebook" as good news for the creditor — more latitude to press. That's a trap, for two reasons.

First, "outside the FDCPA" doesn't mean "anything goes." Commercial collection is still shaped by state licensing and unfair-practices laws, by contract terms, and by ordinary tort law. The federal script is just absent; the legal and reputational exposure isn't.

Second, and more important for a business you'd like to keep as a customer: the FDCPA's guardrails don't only restrain collectors, they also set expectations for how a legitimate collection process behaves. When you hand a commercial account to a third-party agency, you're moving it into a space where none of that familiar structure governs the interaction — and the relationship with that customer is the collateral. Aggression that's technically available to you can quietly end an account you spent years earning.

The discipline has to come from you

Because there's no federal template for B2B collection, the professionalism has to be self-imposed. Nobody is going to hand you a compliant, relationship-safe script for chasing an overdue invoice. The businesses that recover the most — without torching accounts — build their own discipline: contact the right person promptly, communicate clearly and respectfully, and escalate on a deliberate schedule rather than in a burst of frustration once an invoice is badly aged.

That discipline is exactly what the pre-collections window is for. Working an overdue invoice in the 30-to-120-day range — steadily, professionally, before it's handed off to an outside agency operating under different rules — is how you get paid while the account is still worth keeping. The absence of a rulebook isn't a license to be aggressive. It's a reason to be systematic.