Dunning

What Is Dunning?

Dunning is the structured process of recovering a failed or overdue payment through scheduled retries and escalating customer communication. It runs after a card decline, a bank return, or a missed invoice due date, and its job is to collect the money before an accidental payment failure turns into a lost customer.

How Dunning Works

A dunning cycle starts the moment a charge fails or an invoice passes its due date. Two tracks run in parallel.

The first track is the payment retry schedule. The billing system attempts the charge again on a defined cadence, commonly on days 1, 3, 5, and 7 after the failure, sometimes shifting the attempt to a different hour or day of the month to catch a refreshed balance or a new pay cycle. The second track is customer communication: a first dunning email that reads as a helpful notice, a second that names the amount and the deadline, and a third that states what happens if the balance stays open.

Escalation ends somewhere. Most companies define a terminal step at 21 to 30 days: service suspension, downgrade, or handoff to collections. Defining that step in advance is what keeps dunning management from becoming an indefinite series of ignored emails.

Dunning in Plain English

Dunning is the polite chasing that happens when a payment does not go through. Most of the time nothing is wrong with the customer relationship. A card expired, a balance was short for two days, or an invoice landed in the wrong inbox. Good dunning fixes the plumbing without making the customer feel like a debtor.

Why Payments Fail, and Which Failures Are Worth Retrying

Not every failed payment is the same, and treating them identically wastes attempts.

A soft decline is temporary: insufficient funds, a velocity limit, an issuer fraud flag. These are worth retrying, and a well timed second or third attempt recovers a large share of them.

A hard decline is permanent: a closed account, a reported stolen card, an invalid number. Retrying a hard decline will never succeed and adds to the decline ratio that card networks monitor. The only fix is new payment credentials, which is why account updater services from the card networks are worth enabling. They refresh stored card details automatically when an issuer reissues a card.

Bank debits follow different rules. An ACH return arrives with a return code, and Nacha permits only two reinitiation attempts after a return for insufficient or uncollected funds. Retrying past that limit creates compliance exposure, not revenue.

In B2B, the most common failure is not financial at all. The invoice went to a person who left, the purchase order was exhausted, or the AP portal needed a field nobody filled in. No retry cadence fixes that. Someone has to call.

Dunning and Involuntary Churn

Involuntary churn is the customer you lose to a payment failure rather than a decision. The customer still logs in, still gets value, and still intends to pay. Losing that account is pure revenue leakage.

Consider a company with 4,000 subscribers at $200 per month. If 3 percent of monthly charges fail and half of those accounts are never recovered, that is 60 accounts lost per month, roughly $144,000 of annual recurring revenue walking out the door for reasons unrelated to product quality. Moving recovery from 50 percent to 75 percent gets half of that back without a single new sale.

Dunning vs Collections

Dunning is pre-delinquency work aimed at preserving the relationship. Collections is post-delinquency work aimed at recovering the balance, whether or not the relationship survives. Dunning is automated, cheap, and friendly. Collections is manual, expensive, and adversarial, and third party agencies typically keep a meaningful percentage of whatever they recover. The economic argument for investing in dunning management is simply that every dollar recovered there is a dollar that never has to be recovered the hard way.

Dunning and the Closing Motion

Dunning lives in the Collect stage of the Closing Motion, and it quietly threatens Renew. A customer who has received four escalating dunning emails is a customer whose renewal conversation starts on the back foot. The deeper problem is structural: the seller closed the deal months ago but is still carrying the payment risk and the follow-up work. Ratio changes who holds that burden. With Ratio Trade, the buyer pays monthly or quarterly while the seller collects the full total contract value upfront, and Ratio underwrites the buyer and manages the payment schedule. A decline in month seven becomes Ratio's operational problem rather than a finance team's Friday afternoon.

Common Questions About Dunning

How many dunning emails should a sequence include?

Three to four messages over 21 to 30 days is the common pattern, paired with a retry schedule. More than that produces diminishing returns and starts to damage the relationship with customers who simply need a phone call instead.

Does dunning apply to invoiced B2B customers or only card subscriptions?

Both, but the mechanics differ. Card based dunning leans on retries and credential updates, while invoice based dunning depends on reaching the right approver, confirming the purchase order, and matching remittance details inside an accounts payable system.

What is a realistic recovery rate for failed payments?

It varies by customer base and payment method, but soft declines recover far better than hard declines. Track recovery separately by decline type; a blended number hides whether the problem is funding, credentials, or process.

Key Takeaways

• Dunning recovers failed and overdue payments through timed retries plus escalating communication.
• Separate soft declines, which are worth retrying, from hard declines, which need new payment credentials.
• ACH returns follow Nacha reinitiation limits, so bank debits cannot be retried like cards.
• Involuntary churn is revenue leakage from customers who never chose to leave, and dunning is the primary defense.
• Define a terminal escalation step so dunning does not drift into indefinite, ignored reminders.