When Can You Send an Invoice to Collections? Laws & Examples

Key Takeaways

• Most businesses send invoices to collections after 90 days past due, though you can act sooner if debtor communication and payment history indicate it.
• The Fair Debt Collection Practices Act primarily governs consumer debt, but commercial collections must still comply with state laws and the UCC.
• Each state sets its own statute of limitations for debt, typically ranging from 3 to 6 years for written contracts and open accounts.
• Sending a formal demand letter before engaging a collection agency strengthens your legal position and often leads to a faster resolution.
• At Southwest Recovery Services, we provide contingency-based B2B invoice recovery with no upfront costs, helping companies collect past-due invoices nationwide.

Why Unpaid Invoices Become a Collections Question

Collecting unpaid invoices is one of the more delicate challenges in B2B business, requiring a balance of patience, clear communication, and knowing when to escalate. While no single law sets a universal deadline, industry practice generally considers a 90–120-day window the threshold for referring an account to a third-party collection agency. Waiting too long works against you: the likelihood of recovering payment drops sharply after 90 days and becomes significantly harder at the six-month mark.

Before handing an account off to a collections agency, a structured internal escalation process is essential: reminders at 30 days, formal notices at 45–60 days, and a demand letter by 90 days, with every communication carefully documented. Real-world cases across industries like trucking, construction, and oil and gas show a consistent pattern: businesses that follow a clear timeline and bring in professional help early tend to recover significantly more of what they’re owed.

How Long Should You Wait Before Sending an Invoice to Collections?

There is no single legal deadline that dictates when you must send an unpaid invoice to a collection agency. The decision is a business judgment, but industry norms provide useful guidance. Most B2B companies begin escalating collection efforts internally at 30 days past due, send formal demand letters around 60 days, and consider engaging a third-party agency between 90 and 120 days.

The longer an invoice remains unpaid, the harder it becomes to collect. According to data frequently cited in the commercial collections industry, the probability of collecting on a delinquent account drops significantly after 90 days. By six months, recovery becomes considerably more difficult. This decline is why many businesses set a firm internal policy: if payment has not been received or a payment plan established within 90 days, the account moves to an outside agency.

That said, context matters. If a long-standing client communicates openly about temporary cash flow issues, you may choose to extend the timeline. If a new client ignores repeated invoices and calls, it’s reasonable to escalate sooner.

Federal & State Laws Governing Invoice Collections

The Fair Debt Collection Practices Act (FDCPA)

The FDCPA is the primary federal law regulating debt collection practices in the United States. It restricts how third-party collectors may contact debtors, prohibits harassment and deception, and requires written validation notices. However, the FDCPA applies specifically to consumer debts: personal, family, or household obligations. Commercial B2B debts are generally not covered under the FDCPA.

This does not mean B2B collections are unregulated. Ethical agencies still follow FDCPA principles as a best practice, and deceptive or abusive conduct in commercial collections can trigger liability under state unfair business practice statutes.

Statute of Limitations by State

Every state sets a statute of limitations on how long a creditor has to file a lawsuit to collect a debt. For written contracts, this period typically ranges from 3–6 years, though some states allow longer. In Texas, for example, the statute of limitations on a written contract is four years. Once the statute expires, you lose the legal right to sue for the balance, though you can still attempt to collect voluntarily.

This is one of the most important reasons not to wait too long before sending an invoice to collections. Even if you are not planning to sue immediately, engaging a collection agency preserves your options and creates a documented record of collection efforts.

UCC & Commercial Debt Rules

The Uniform Commercial Code (UCC) governs many commercial transactions, including the sale of goods between businesses. Under UCC Article 2, a seller has the right to pursue payment for delivered goods, and the statute of limitations for such claims is generally four years from the date the cause of action accrues. Many B2B invoice disputes fall under this framework, making the UCC an important reference point for commercial collections.

Steps to Take Before Sending an Invoice to Collections

Jumping straight to a collection agency without any internal follow-up can create unnecessary friction. A structured escalation process protects your relationships and strengthens your position if the account does go to collections.

1. Start with a reminder at 15–30 days past due: a simple email or phone call referencing the invoice number and amount.
   
2. If there is no response, send a second notice at 45–60 days that explicitly states the account is overdue and outlines the next steps.
   
3. At 60–90 days, issue a formal demand letter. This letter should state the amount owed, the original payment terms, and a deadline to pay before the account is referred to a third-party agency.

Document every communication. Emails, call logs, and letters all serve as evidence that you made reasonable efforts to resolve the matter before escalating. This record is valuable both to the collection agency handling your account and in any potential legal proceedings.

Examples of Invoice Collection Scenarios

Example 1: Trucking Company With a 120-Day Outstanding Invoice

Consider a mid-size trucking firm that delivered a $45,000 load for a logistics broker. After 30 and 60-day reminders went unanswered, the trucking company sent a formal demand letter at 75 days. When payment still did not arrive, they referred the account to a contingency-based collection agency for 120 days. The agency’s omnichannel outreach of phone, email, and formal letters, if efficiently applied, will likely result in a payment arrangement within three weeks of placement.

Example 2: Contractor Facing Partial Payment Dispute

Suppose a commercial contractor completes a $120,000 project but receives only $80,000. The client disputes the remaining $40,000, citing unfinished punch-list items. After documenting the completed scope and sending a demand letter at 60 days, the contractor engages a collection agency experienced in construction receivables. The agency would then facilitate a negotiated settlement, likely recovering the majority of the disputed balance without litigation.

Example 3: Oil & Gas Supplier With Multiple Small Invoices

Take, for example, an oil and gas supply company with 15 outstanding invoices from a single distributor, each under $5,000, totaling over $60,000. Rather than pursuing each individually, they bundle the accounts and send them to a collection agency after 90 days. The bundled approach would allow the agency to negotiate a single resolution covering all invoices.

These scenarios illustrate a common pattern: businesses that document their efforts, follow a clear escalation timeline, and engage professional help within 90–120 days tend to see stronger outcomes.

Why Southwest Recovery Services Leads in B2B Invoice Recovery

At Southwest Recovery Services, we specialize in recovering past-due business invoices for companies with $10M–$100M in revenue. With over 20 years of experience and 12 offices across seven states, we understand that collecting commercial debt requires more than phone calls; it requires strategy, persistence, and professionalism.

We operate on a contingency-only model, which means you pay nothing up front and only pay when we collect. Our contingency fees typically range from 10–25%, depending on the age and complexity of the accounts. This structure aligns our incentives with yours: we succeed only when you recover your money.

Our veteran collectors use AI-guided tracking software that monitors every promise-to-pay across phone, email, text, and mail. We serve priority sectors, including trucking, logistics, contractors, and oil and gas industries, where relationships matter, and aggressive tactics do more harm than good.

Southwest Recovery Services takes a compliance-first approach. We use respectful, omnichannel outreach to recover what you are owed without damaging your business relationships.

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Frequently Asked Questions (FAQs)

Can you send an invoice to collections immediately after it’s past due?

Yes, there is no legal minimum waiting period. However, most businesses wait 90 to 120 days and exhaust internal follow-up first to preserve the client relationship and demonstrate good faith efforts.

Does the FDCPA apply to business-to-business debts?

No. The Fair Debt Collection Practices Act applies to consumer debts only. B2B collections are governed by state commercial laws and the Uniform Commercial Code, though ethical agencies follow FDCPA standards voluntarily.

What happens to a debt after the statute of limitations expires?

You lose the right to file a lawsuit to collect the debt. The debtor still owes the money, and voluntary payment is still possible, but you can no longer use the courts to enforce payment.

Can sending an invoice to collections hurt your business relationship?

It can, which is why choosing an agency that uses professional, respectful outreach matters. Many commercial relationships survive the collections process when handled with transparency and clear communication.

What makes Southwest Recovery Services different from other collection agencies?

Southwest Recovery Services operates on a contingency-only basis with no upfront fees. We use AI-guided tracking across all communication channels and specialize in B2B recovery for industries like trucking, logistics, and oil and gas, all with a compliance-first approach.

*Note: Recovery rates mentioned are for general reference only and not guaranteed. Actual results vary by account and industry. Contact Southwest Recovery Services for a customized quote.