What is Dunning?
Written by Arnon Shimoni
✓ Expert
Last updated on:
What is Dunning?
Dunning is the process of communicating with customers whose payments have failed or are overdue, with the goal of recovering the revenue before it's lost to churn. In subscription businesses, it's one of the highest-leverage activities in the entire revenue stack because the customer hasn't chosen to leave, their card just didn't work.
Dun comes from the 1620's phrase meaning "to insist on payment of debt," 1620s, also as a noun, "agent employed to collect debts". The modern version is considerably more sophisticated than its origins suggest: automated retry logic, personalised messaging sequences, and payment method update flows that recover revenue that would otherwise quietly disappear at the end of a billing cycle.
Why Failed Payments Happen
Understanding the failure mode shapes the recovery strategy. Not all payment failures are the same, and treating them identically leads to over-contacting customers with solvable problems and under-pursuing ones who've genuinely churned.
Failure type | Common cause | Recovery approach |
|---|---|---|
Insufficient funds | Timing issue; funds available later in the month | Retry on a different day |
Card expired | Customer hasn't updated details | Prompt card update via email or in-product |
Card reported lost/stolen | Issuer blocked the card | Customer must add new card |
Hard decline | Bank rejected transaction for fraud or credit reasons | Contact required; retry unlikely to work |
Soft decline | Temporary issue at the issuer | Retry after short interval |
Payment method removed | Customer deleted the card | Prompt to re-add payment method |
Billing infrastructure that can distinguish hard from soft declines, and route them into different recovery flows, recovers materially more revenue than systems that retry everything on the same schedule.
The Dunning Sequence
Most dunning processes follow a staged structure. The first stage is automated retries attempting the charge again, often at different times of day or on different days of the month, to catch temporary issues like insufficient funds that resolve themselves. Well-designed retry logic considers the specific decline code returned by the gateway rather than retrying blindly.
The second stage is customer communication. An email or in-app notification lets the customer know a payment failed and asks them to update their details. The tone here matters: customers with a genuine payment method issue are not trying to churn, and aggressive messaging at this stage damages a relationship that can be saved with a simple prompt.
The third stage is escalation. If retries and communication haven't resolved the failure after a defined period, the account is flagged for service interruption or cancellation. The timing of this threshold is a business decision. If it's too short, you're cancelling customers who would have paid; too long and you're delivering service to customers who won't.
Dunning and Revenue Recovery
The revenue impact of involuntary churn
In subscription businesses, a meaningful share of churn is involuntary - where customers whose subscriptions lapse because a payment failed, not because they decided to leave. Estimates vary, but involuntary churn commonly accounts for 20-40% of total subscription churn. A well-run dunning process recovers a significant portion of this.
Smart retry timing
The day of the month matters. Retrying a payment on the day after it failed often produces the same result. Retrying mid-month, when customers are more likely to have funds available, recovers more. Some billing systems use machine learning to predict the optimal retry time per customer based on historical payment behaviour. Others use simpler heuristics. Both outperform fixed-interval retries.
Account updater services
Card networks offer account updater services that automatically refresh stored card credentials when a customer gets a new card number. This prevents a category of failures entirely the customer never knows their card expired, because their payment credential was updated in the background. Payment gateways that support account updater pass the updated credentials to the billing system before the next charge attempt.
Dunning Metrics to Track
Metric | What it measures | Why it matters |
|---|---|---|
Recovery rate | % of failed payments ultimately collected | Overall dunning effectiveness |
Retry success rate | % of retried charges that succeed | Quality of retry logic |
Days to recovery | Average time from failure to collection | Cash flow impact |
Involuntary churn rate | % of cancellations from payment failure | Revenue at risk from billing failure |
Hard decline rate | % of failures that are unrecoverable | Indicates fraud or credit risk concentration |
Frequently Asked Questions
What is dunning?
Dunning is the process of recovering failed or overdue payments through a sequence of automated retries and escalating customer communications, before the account is suspended or sent to collections.
Why do subscription payments fail?
Most commonly expired or replaced cards, insufficient funds, and issuer fraud blocks. A meaningful share are soft declines that succeed on a retry, which is why retry timing matters more than retry count.
What is involuntary churn?
Customers lost because a payment failed rather than because they chose to leave. It is often a large share of total churn and is far cheaper to fix than voluntary churn, because the customer still wants the product.
What does a good dunning sequence look like?
Retries timed to when funds are likely available rather than at fixed intervals, a first message that reads as helpful rather than threatening, an easy path to update the payment method, and a defined end state so accounts do not retry indefinitely.
What is an account updater?
A card network service that automatically supplies updated card details when a customer's card is reissued. It prevents a large share of failures before any retry is needed and is usually the highest-return dunning investment.
What dunning metrics should you track?
Recovery rate by failure reason, time to recovery, involuntary churn as a share of total churn, and the proportion of failures that are unrecoverable, which indicates fraud or credit risk concentration.
Related
Recurring payments. The mechanism that fails and needs recovery.
Revenue leakage. Uncollected revenue as a category.
Invoice. The document being chased.
Payment gateway. Where the decline actually happens.
Quote to cash. Collection as a stage in the revenue process.
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