When To Send an Unpaid Invoice to Collections

By the time a founder googles this question, the invoice is usually 90-plus days old, the emails have gone unanswered for a month, and the anger has hardened into something colder. I understand the impulse. Before you act on it, let me give you the finance leader's view of what a collections agency actually is, what it costs beyond the fee, and the checklist that should be exhausted first, because in my experience roughly half the invoices that get sent to agencies could still have been recovered in-house for free.

What a collections agency actually is

An agency is a specialist in applying pressure you cannot: credit bureau reporting, persistent professional contact, and the implicit threat of legal escalation. For that, contingency agencies take 25 to 50 percent of whatever they recover, with older debts commanding the higher cuts because recovery odds fall off a cliff with age. Industry recovery rates on commercial debt are sobering: agencies successfully collect on a minority of placed accounts, and what they do recover arrives months later, minus their share.

Two costs never appear on the agency's rate card. The relationship ends permanently and publicly; nobody buys again from a vendor who sent them to collections, and small industries talk. And you lose control of tone; the agency's methods become your brand's methods in the debtor's mind.

None of this means never. It means the decision deserves a trigger, not a temper.

The right triggers

Send an account to collections when the record, not the feeling, shows the conversation is over. My tests, and I want all three:

A broken written commitment. Not just late payment, but a payment plan or dated promise, in writing, that was missed and then not repaired after a next-morning follow-up. A customer who breaks a written plan and goes silent has told you, in data, that goodwill is exhausted.

A final notice with a deadline, ignored. One clear letter: amount, history of attempts, a specific date, and the stated consequence. If the deadline passes in silence, the consequence must actually happen, or every future deadline you ever set is fiction.

The math clears. On a $2,000 invoice, an agency's 40 percent cut plus your admin time makes even successful recovery a near-wash; small-claims court or a tax write-off may serve you better. On $15,000, the math works. Run it coldly.

If any of the three is missing, you are not at the agency stage. You are at the un-exhausted-options stage, which is better news than it feels like.

What to exhaust first (the free recovery ladder)

The phone. Astonishing how often the account that ignored five emails resolves in one seven-minute call. Email is easy to ignore; a calm human voice asking "help me understand what happened" is not. Call before any nuclear step, always.

A different human. Your contact may be the blockage: departed, overruled, or embarrassed. One professional note to the owner or finance lead ("I have been unable to resolve this with Tom and wanted to reach you directly before we escalate") reroutes around dead contacts and often produces payment within days.

Structure instead of surrender. Full payment may genuinely be impossible; a front-loaded written installment plan converts an unrecoverable lump into a probable stream. Sixty cents collected calmly beats a coin-flip on forty cents through an agency.

The pre-collections letter. The final notice that names the date and the consequence recovers a remarkable share by itself, because it converts abstract nagging into a concrete fork. Many businesses pay at the brink who would not pay before it.

Small claims court, for mid-size balances. Filing fees are modest, lawyers usually unnecessary, and the summons itself frequently produces settlement. Jurisdiction limits vary (commonly $5,000 to $25,000 in US states); for balances inside the limit, it often beats an agency on both recovery percentage and speed.

The habit that makes this article irrelevant

Here is the pattern behind every AR book I have ever cleaned up: invoices do not arrive at day 90 because the customer was a criminal. They arrive there because days 3 through 45 were quiet. The reminder skipped in a busy week, the reply nobody logged, the "paying Friday" nobody tracked, the second follow-up that went out three weeks late and apologetic. Collections agencies are, overwhelmingly, a tax on inconsistent follow-up.

The businesses that never need this article share one boring habit: every invoice gets a friendly nudge at day 3, every reply gets read and classified, every promise gets a date and a watcher, and escalation happens on a calendar instead of a mood. Whether that discipline comes from an exceptional bookkeeper or from software, the effect is identical. It is the reason we built RevCollect, which runs that entire ladder automatically with a human approving each send, and it is the reason our best customers describe the collections-agency question as one they simply stopped having.

Send the account if all three triggers are met; you owe your business that spine. Then fix the quiet weeks, so the next one never gets old enough to ask.

FAQ

What percentage do collection agencies take? Contingency fees typically run 25 to 50 percent of the amount recovered, rising with debt age and difficulty. Flat-fee services exist for earlier-stage accounts at lower cost and lower intensity.

How old should an invoice be before collections? As a rule of thumb, 90-plus days and only after a broken written commitment, an ignored final notice with a deadline, and math that clears the agency's cut. Recovery odds fall sharply after six months, so decide deliberately, not slowly.

Will sending a client to collections hurt my business? It permanently ends that relationship and can ripple through a small industry's reputation network. Price that cost into the decision alongside the fee.

Can I write off an unpaid invoice instead? If you use accrual accounting, an uncollectible invoice can generally be written off as bad debt, which recovers the tax component of the loss. Cash-basis businesses typically cannot deduct unpaid invoices since the income was never recognized. Confirm treatment with your accountant.