Collections agency vs. doing it yourself: the real math on an overdue invoice

A collections agency typically keeps 25% to 50% of what it recovers, recovers a fraction of what it is handed, and usually ends your relationship with that client. Doing it yourself keeps all the money and the relationship but depends on someone actually doing it, consistently, for every invoice. For most B2B service businesses the right answer is a third path: a fixed, escalating follow-up sequence sent in your own name, which recovers the large majority of collectible invoices before an agency would ever see them, at close to zero marginal cost. Agencies are for the residue, not the process.

Here is the math on each option, when each one is right, and how to decide for a specific invoice.

What does a collections agency actually cost?

Most commercial collection agencies work on contingency: they keep a percentage of what they collect and charge nothing if they collect nothing. Typical ranges are 25% to 35% for invoices under a year old and 40% to 50% for older or smaller balances. Some charge flat fees for a letter-writing service at the low end. Debt buyers, a different animal, pay pennies on the dollar up front and then own the debt.

So on a $10,000 invoice at a 30% contingency, a successful collection nets you $7,000. That is the best case. Commercial recovery rates on placed accounts are far below 100%, and they fall steeply with age, which is the part the fee percentage does not tell you.

The 'recovery rate' column is the one to stare at. An agency's fee is only paid on success, which sounds safe. But the accounts most businesses send to collections are the ones that already sat unworked for 90 or 120 days, and those are exactly the ones agencies recover least often. You are paying a high rate on a small number.

What does doing it yourself actually cost?

Less than an agency and more than zero. The cost is time and, more importantly, consistency. A business with 60 open invoices on mixed terms needs someone to look at the aging report every week, send the right email to each late invoice at the right stage, read the replies, fix the paperwork bounces, and escalate the ones that go quiet. Done properly that is several hours a week. Done improperly (which is the norm) it is a burst of activity when cash gets tight and silence the rest of the time.

The hidden cost is not the hours. It is that inconsistent follow-up teaches clients your invoices can wait, which lengthens every future invoice too. The business that follows up on day 31 every single time gets paid ahead of the one that follows up on day 60 sometimes.

The option most businesses skip

Between 'ignore it' and 'hand it to an agency' sits the thing that actually recovers most overdue invoices: a fixed sequence of follow-ups, escalating in tone, sent from your own name, starting the day after the due date. It is not sophisticated. It works because most late invoices are not refusals; they are sitting in a queue, and the vendor who asks consistently moves to the front.

Those numbers are why the agency math looks bad for most invoices. The agency is being paid 30% to do, in a worse tone and from a stranger's email address, what a direct note from you would have done for free. The agency is not the wrong tool; it is the wrong first tool.

When is a collections agency the right call?

• The sequence is finished and the client has gone silent. You sent five escalating notes over 60-plus days, including one to a decision maker, and got nothing. That is the residue an agency exists for.
• The client is insolvent or disappearing. Agencies have skip-tracing and legal escalation you do not.
• The relationship is already over. If you will never work with them again, the main cost of an agency (the relationship) is zero.
• The balance is large enough to justify the fee. On a $900 invoice, a 40% fee plus your time to place it is not worth it. Write it off or keep nudging.

And one hard rule: never place an invoice with an agency that has not first received your own full sequence. Not because of the fee, but because a client who gets an agency letter as the first firm contact will, reasonably, feel ambushed, and you lose the account over an invoice that a direct email probably would have collected.

How to decide for a specific invoice

1. 1Has it received the full sequence? If not, run it. Five touches over 60 days, escalating, from your name. Most invoices end here.
2. 2Did the client engage at all? A reply, even an unhelpful one, means the invoice is alive. Keep working it directly. Silence after a decision-maker escalation is the signal to move on.
3. 3Is the balance worth 30% to 50% plus your time? Under roughly $1,500, usually not. Decide between one more direct attempt and a write-off.
4. 4Do you want to keep the client? If yes, one more attempt: a phone call from the owner, not an email. If no, place it.
5. 5Set a date and act on it. The worst outcome is the invoice sitting on the over-90 line of the aging report for another six months while you decide. Decide.

An agency should get what your process could not collect, not what your process never tried to.

Where Reeve fits

Reeve is the middle path, automated. It runs the full sequence on every open invoice in your name, from your own email, escalating on schedule, pausing on disputes, and stopping on payment, for a flat monthly price with no percentage of anything. The invoices that finish the sequence unpaid are flagged for your decision: one more call, an agency, or a write-off. In practice that residue is small, and it is the only part an agency ever needs to see.