Every business with invoice terms eventually faces the same moment: a payment is late, and someone has to decide what to do next. Done ad-hoc, that decision gets made differently every time, usually by whoever happens to remember. A dunning schedule replaces the guesswork with a planned sequence of reminders that starts before the due date and escalates in clear, pre-agreed steps. This guide explains what a dunning schedule is, how to design a cadence, how to match tone and channel to each stage, and when to pause or escalate — without burning the relationship.
What is a dunning schedule?
Dunning is the process of communicating with customers to collect money they owe on overdue invoices. A dunning schedule is the planned sequence of those communications — what you send, when you send it, through which channel and in what tone — from a gentle courtesy note before the due date through to a formal final notice. The word sounds old-fashioned, but the idea is simple: decide the steps once, in calm, so that nobody has to improvise under pressure when an invoice slips.
Why plan it instead of chasing ad-hoc?
Ad-hoc chasing has three problems. It is inconsistent, so similar customers get treated differently and nobody can predict what happens next. It is forgettable, so reminders get skipped exactly when the team is busy — which is exactly when cash matters most. And it is stressful, because every overdue invoice becomes a fresh judgement call. A schedule fixes all three. It makes collection predictable for customers, repeatable for the team, and measurable for the business, so over time you can see which steps actually recover money and which just annoy people.
A sample dunning cadence
Treat the following as a starting template, not a rule. Anchor every step to the due date and adjust the gaps to your payment terms and your customers.
- 3 days before due. A friendly courtesy reminder that an invoice is coming due, with the amount and a payment link. This is a service, not a chase.
- On the due date. A neutral “due today” note confirming the amount and how to pay.
- +7 days. A polite first reminder that the invoice is now overdue, assuming it was simply missed.
- +14 days. A firmer second reminder that references the agreed terms and asks for a specific payment date.
- +30 days. A direct notice, ideally backed by a phone call, that states the consequences of continued non-payment.
- +45 days. A formal notice, often from a manager, warning that the account is close to escalation.
- +60 days. A final notice before the debt is passed to a collections agency or to legal, with a firm deadline.
Matching channel and tone to each stage
The early steps should be low-friction and warm: email or SMS, short and helpful, written as if the customer simply forgot — which is usually true. As the days pass, the tone firms up and the channel gets more personal. A phone call around the +30 mark often recovers more than any email, because it surfaces disputes and lets you agree a plan on the spot. Reserve formal, letter-style notices and any mention of an agency or legal action for the late stages. Escalate the firmness gradually; never open with a threat, and never let the language turn personal or shaming.
Segmenting by customer value and risk
One schedule rarely fits everyone. A long-standing strategic account that is three days late deserves a softer, slower touch than a brand-new customer with a history of late payment. Segment by value and by risk: large or high-risk balances get earlier phone contact and tighter deadlines, while small or reliable accounts can run the gentle track almost on autopilot. Always give each account a single named owner, so follow-ups never fall between people.
When to pause and when to escalate
A schedule needs a stop rule as much as a start rule. Pause the sequence the moment a customer raises a genuine dispute, and route it to whoever can resolve it — chasing a disputed invoice destroys goodwill and wastes effort. Pause it too when a payment plan is agreed, and track that plan separately. Escalate, on the other hand, when reminders are ignored, promises are broken, or the balance crosses a threshold: move it to a manager, then to an agency or legal, according to a pre-agreed rule rather than a bad mood on the day.
Common mistakes to avoid
- The same message every time. If the +7 and the +45 notice read identically, customers learn that nothing changes and ignore both.
- No owner. A schedule with nobody responsible for each account quietly stops running.
- No stop rule. Chasing disputed or already-paid invoices is the fastest way to lose a good customer.
- Burning the relationship too early. Opening firm, or threatening legal action on day seven, costs you far more than the invoice.
- No escalation path. If nothing ever happens after the last reminder, the whole sequence loses its weight.
- Never measuring. If you do not track which step recovers payment, you cannot improve the cadence.
Start with the template above, run it for a quarter, and tune the timing and tone from what actually gets your invoices paid.
Frequently asked questions
What does dunning mean?
Dunning is the process of contacting customers to collect payment on overdue invoices. A dunning schedule is simply the planned sequence of those reminders, from a pre-due nudge to a formal final notice.
How many reminders should a dunning sequence have?
Most businesses use five to seven steps, anchored to the due date. A common pattern is a reminder before due, one at due, then follow-ups at roughly 7, 14, 30, 45 and 60 days overdue, escalating in tone.
When should I escalate to a collections agency or legal?
Escalate when reminders are repeatedly ignored, a promise to pay is broken, or the balance crosses a value you set in advance, usually around 60 days overdue after a final notice.
Should I pause reminders if a customer disputes an invoice?
Yes. Pause the sequence as soon as a genuine dispute or an agreed payment plan exists, and track it separately. Chasing a disputed invoice wastes effort and damages the relationship.
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