Up: Dispute Infrastructure See also: Handling Dispute Surges
Monitoring Dispute Ratios
Definition
The Dispute Ratio (or Chargeback Rate) is the key health metric for any merchant. It is typically calculated as Count of Disputes / Count of Sales. Breaching 0.9% (Visa) or 1.0% (Mastercard) triggers monitoring programs.
Why it matters
It is the "Risk Scoreboard." Staying below the threshold keeps you safe. Breaching it leads to fines ($25k+), reserves, and eventual termination (TMF).
Signals to monitor
- Monthly Ratio: The official metric used by networks.
- Daily Trend: The leading indicator (moving average).
- Sales Volume: The denominator. (Dropping sales volume causes the ratio to spike even if disputes stay flat).
- Vintage Ratio: Disputes divided by the sales from the same month they occurred (Cohort view).
Breakdown modes
- Denominator Shock: Turning off marketing reduces sales, causing the dispute ratio to skyrocket (Math problem).
- Program Entry: Entering the "Visa Monitoring Program" (VFMP) or "Mastercard ECP."
- Fine Assessment: Unexpected debits for program fees.
Where observability fits
- Forecasting: "At this rate, we will hit 1.1% on the 25th."
- Attribution: "The spike is coming from the affiliate 'Summer_Promo_2024'."
- Denom Management: Identifying the need to push safe volume to dilute the ratio.
Note: observability does not override processor or network controls; it provides operational clarity to navigate them.
FAQ
Is it by Count or Value?
Almost always by Count. A $1 dispute hurts you exactly as much as a $1,000 dispute.
What is the "Lookback" window?
Networks typically compare "Disputes Received this Month" vs "Sales Processed this Month."
Can I ignore Won disputes?
No. The ratio counts all disputes filed, regardless of whether you win or lose. The damage is done at the filing.