Chase overdue invoices without being unpleasant

Nobody enjoys chasing money, which is why it happens late, in bursts, and in a tone that has drifted from patient to terse because the person writing has been thinking about it for three weeks.

Consistency helps more than firmness. An invoice chased politely on a schedule gets paid faster than one chased angrily at random.

Write the sequence down before you automate it

Decide the steps and the words for each. A sequence that works for most small businesses looks like:

Three days after due, a gentle note that assumes it was missed. Ten days, a firmer note to the same person plus whoever handles accounts. Twenty-one days, a note that mentions the account and stops work if that is your policy. After that, a human.

The point of writing it down is that the escalation stops being emotional. Each step happens because of the calendar, not because of how you feel.

Build the job

Every weekday at 9am, look at our outstanding invoices.

For each overdue invoice, draft the next note in the sequence based on how
many days past due it is:
  3 days   assume it was missed, friendly, one line, re-attach the invoice
  10 days  firmer, copy their accounts contact if we have one
  21 days  reference the account and our terms, still civil

Never send two notes for the same invoice in the same week, and never send
a step we have already sent.

Do not chase an invoice that is disputed or that has a credit pending.
Bring those to me instead.

If nothing is overdue, say so and stop.

The disputed-invoice exception is the one that protects the relationship. A dunning note that lands while the customer is waiting on a credit you already agreed reads as either incompetence or bad faith, and it costs more goodwill than the invoice is worth. If your system does not mark disputes clearly, that is worth fixing before this runs unattended.

Hold everything at first

Run in draft for a full cycle. You are checking two things: that the amounts and dates are right, and that the tone at each step is one you would put your name to.

Tone is the one people get wrong. Read the 21-day note especially, because that is the one a customer might forward to someone.

Let the first step send itself

The three-day note is the one worth automating first and the one that recovers most of the money. It is nearly always a genuine oversight, the note is short, and getting it out on time is worth more than getting it perfectly worded.

Keep 10 and 21 held for approval for a good while longer.

What good looks like

Your average days-to-payment drops, and it drops because of the three-day note rather than the angry one.

The second thing to watch is your own calendar: chasing stops being a task you schedule and dread, and becomes a short list you approve.