A card expires. The charge fails. The subscription stops. The customer does not notice straight away, and by the time they do they have often found something else.
That scenario accounts for a significant share of what most businesses record as Churn rate. It is avoidable loss, and the easiest kind to recover.
Definition
Dunning is the automated sequence of payment retries and messages triggered when a recurring payment fails.
Its goal is not to apply pressure but to inform: in the vast majority of cases the customer does not know their payment failed.
Why payments fail
| Cause | Recoverable? |
|---|---|
| Expired card | Yes, nearly always |
| Limit reached | Yes, by retrying later |
| Authentication not completed | Yes, with a direct link |
| Card lost or replaced | Yes, with an update |
| Persistently insufficient funds | Rarely |
The first four rows have nothing to do with customer satisfaction. They are mechanical accidents, and they make up most failures.
The sequence that works
- Day 0: automatic retry, no message. A share of failures clear on the second attempt.
- Day 1: a neutral, factual email with a direct link to update the payment method.
- Day 3 and day 7: further retries, further reminders.
- Day 10: a final message stating the suspension date.
- Day 14: suspension, with one-click reactivation.
Tone matters more than people think. A message saying "your payment did not go through, here is how to update it" recovers; one talking about payment incidents or arrears puts people on the defensive, when the customer did nothing wrong.
Retry timing is not neutral
When you retry matters nearly as much as how often. Two rules come out of how card limits actually work.
Avoid retrying immediately after a limit decline. The card will decline again for the same reason. Waiting three to five days lets a monthly limit reset, which turns a certain failure into a likely success.
Prefer the start of the month. Personal accounts are most funded just after payday. A retry scheduled for the 2nd succeeds noticeably more often than the same one on the 28th, at no extra cost.
Most processors let you configure this schedule. It is worth ten minutes of setup, because it applies to every failure from then on.
Frequently asked questions
What recovery rate should I expect?
A complete sequence commonly recovers half the failures, sometimes more when automatic card updating is enabled at your Payment processor. Against a cost of nothing once set up, it is the most profitable automation a subscription can have.
Should I cut access immediately?
No. A grace period of a few days leaves time to react and avoids losing a customer over an expired card. Cutting on the first failure turns a technical incident into a permanent cancellation.
How many retries?
Three or four, spaced several days apart. Beyond that the success rate becomes negligible and some banks treat repeated attempts as suspicious.
How do I measure the effect?
Separate voluntary churn, where the customer cancelled, from involuntary churn, where the payment failed. Many people do not make that distinction, and blame their product for a loss caused by their payment mechanics. Our n8n course covers this kind of sequence, where the difficulty is not the tooling but the right gap between two messages.