MID Health Monitoring
Beast's AI-powered MID health monitoring tracks every MID against Visa and Mastercard limits in real time, so you fix problems weeks before they turn into fines, reserves or a closed account.
MID healthEvery MID, every program · Oct so far
LiveThe problem
Your overall ratio looks fine while one MID is close to the limit.
Visa and Mastercard count differently, so one ratio never tells you where you stand.
Networks flag a MID after the month ends, too late to fix that month.
On new MIDs, Mastercard adds refunds to chargebacks.
Why it matters
1.5%
Visa's limit for merchants, down from 2.2% on 1 April 2026
100
Chargebacks in a month, at a 1.5% ratio, before Mastercard flags a MID
72 hrs
For an acquirer to investigate a MID flagged by Mastercard's scam program, from 24 July 2026
SourcesVisa VAMP fact sheet (2026); Mastercard Security Rules and Procedures; Mastercard Scam Merchant Monitoring Program (2026).
Inside the engine
Beast's AI model reads every sale, refund, dispute and fraud report, including Visa's TC40 reports, and counts each MID's ratio the way each network does. The number you watch is the number they judge.
MID-12Gateway C
Oct so farVisa VAMPFraud reports + disputes ÷ this month's sales
1.31%Mastercard chargebacksThis month's chargebacks ÷ last month's sales
0.91%Same MID, same month, two numbers. Each network also needs a minimum count before it flags a MID.
Payments team
When a MID is at risk, our payments team helps you find the cause and plan the fix, from a campaign that ran hot to an acquirer asking questions.
What you get
Beast flags a MID as it heads for a card network limit, while there's still time to fix it.
MID-12's VAMP ratio this month: Beast flagged it on Oct 12 as it headed for Visa's 1.5% limit, with 19 days left in the month to fix it. It is at 1.31% today.
Every MID across every processor, so nothing slips between dashboards.
Every MID on every processor, with this month's Visa VAMP ratio: MID-12 on Gateway C 1.31%, MID-03 on Gateway A 0.74%, MID-04 on Gateway B 0.27%, MID-07 on Gateway C 0.48%, MID-01 on Gateway A 0.36%, MID-14 on Gateway B 0.31%. MID-12 is near Visa's 1.5% limit.
See which affiliates, offers and BINs drive a MID's chargebacks, so you fix the source, not the symptom.
What drives MID-12's disputes this month: Affiliate 12 58%, Affiliate 4 14%, Direct 11%, Affiliate 9 9%, Other 8%. The top reason code is 10.4, Other fraud, card absent.
Refunds and chargebacks tracked together on MIDs under six months, the way Mastercard counts them.
Refunds plus chargebacks over 30 days on MIDs under six months, against Mastercard's 5% line: MID-15, 38 days old, at 3.3%. The others are well under it.
How it works
No code in your checkout. Nothing to migrate.
Link your billing platform and processors, read-only.
Live in days
Beast tracks every MID against every limit as payments come in.
Real time, not month end
See what's driving a MID, fix the cause, and watch its ratio fall.
Caught before the month closes
Case study
$914,758
secured · 12 Aug to 23 Sep 2026
| Before launch (60-day benchmark before launch) | 57.1% |
|---|---|
| After launch (First six weeks, traffic Beast managed) | 70.0% |
| Change, derived | +12.9 pts |
“Beast Insights turned my whole business around. … Their tools use millions of retroactive data points to match transactions with merchant accounts for the highest approval opportunity and lowest refund rate.”
Two ways to use it
Beast flags every MID at risk, early. You fix the cause.
Our payments team manages MID health with you, alongside routing and retries, and reports every month.
MID health monitoring tracks every merchant account against the card networks' chargeback and fraud limits, so you see risk building weeks before your acquirer steps in. Visa's limit for excessive merchants is a 1.5% VAMP ratio. Beast shows each MID's ratios across every processor and flags any MID heading for a limit. The full rules are in our Visa VAMP guide and Mastercard SMMP guide.
Watching every gateway and MID against the card networks' rules, so a problem is fixed before it becomes a fine, a reserve or a closed account. For a subscription merchant, that mostly means each MID's Visa VAMP ratio, its Mastercard chargeback and fraud ratios, and refunds plus chargebacks on new MIDs.
Visa flags a merchant as excessive at a 1.5% VAMP ratio, down from 2.2% on 1 April 2026, once it passes a minimum count. Mastercard flags one at a 1.5% chargeback ratio with 100 or more chargebacks in a month, and at 3% with 300 or more. Your acquirer may set tighter limits.
Visa adds fraud reports (TC40) and disputes (TC15), then divides by settled card-not-present sales (TC05) in the same month. A fraud dispute can count twice. Beast includes your TC40 reports, so you see the number Visa sees. More on TC40 fraud reports.
Because each network counts its own way. Visa divides this month's fraud reports and disputes by this month's sales. Mastercard divides this month's chargebacks by last month's sales. One blended ratio matches neither. Beast counts each network's way, MID by MID. More on the chargeback ratio formula.
As soon as its ratio starts heading for a limit. Beast checks every MID in real time and flags one while there's still time in the month to act, in Beast and through Anomaly Alerts in Slack, Telegram or your team's channel.
No. Card networks treat spreading volume across MIDs to stay under a limit as evasion, and it can put every MID involved at risk. Fix the cause instead: the affiliate, offer, BIN or reason code driving the ratio. Beast shows you which one.
Because the cost lands on your MIDs. A MID over a limit brings per-dispute fees, a higher reserve and tighter limits from your acquirer. If it stays there, the MID can be closed and listed in a file every acquirer checks. Catching it early keeps that cost off your books.
No. Any MID can cross a limit in one bad month: a campaign that runs hot, an affiliate sending poor traffic, a new offer with high refunds. Networks judge each MID on its own month, so a healthy average is no protection.
Continuously. Beast monitors chargeback ratios MID by MID, reading every sale, refund, chargeback and fraud report from your processors, payment providers and billing platform as it comes in. It counts each network's ratio its own way, compares it with the limit and shows what's driving any move.
Yes. Every MID and processor sits side by side with its Visa and Mastercard ratios, so you see which are healthy and which need attention. To compare their approvals and declines, use payment gateway analytics; to see which MID each bank approves most, use payment routing.
Beast alerts your team the moment a MID's ratio starts climbing toward a limit, with what moved and why, through Anomaly Alerts in Slack, Telegram or your team's channel. You fix the cause and watch the MID come back to healthy.
Not hard. Beast connects to the billing platform and processors you already use, read-only by default. There's no code in your checkout and nothing to migrate, and most merchants are live in days.
Your gateway shows its own MIDs, usually as one blended ratio and a month late. Beast shows every MID across every processor, counted the way Visa and Mastercard count, with clear reporting on each MID's chargeback trends by card network, early warnings and the cause behind each move.
Within days of connecting, you see where every MID stands against each network's limit, and which MIDs are close. What you fix next depends on what's driving each one, and Beast shows where to start.
MID Health Monitoring is part of the Platform plan, billed monthly by your processing volume, from $99 a month. With Revenue boost, our payments team also manages MID health with you, priced on results. See pricing for every volume band.
Further reading
