1. Why are clinic merchant accounts being frozen more in 2026?
Because the tolerance got smaller while clinics moved more of their billing online. Visa’s monitoring program counts fraud reports and disputes together against card-not-present transactions, and from 1 April 2026 the line for US merchants is 1.5%, down from 2.2%.
Three things make clinics sit closer to that line than a typical shop:
| Clinic pattern | Why it raises the ratio |
|---|---|
| Recurring memberships | A monthly charge on a card the patient is not holding is card-not-present, and a forgotten membership becomes a dispute rather than a cancellation |
| Medication programs | GLP-1 and hormone programs are long, expensive and emotional; a patient who stops seeing results disputes the last three months |
| Unrecognised descriptors | A statement line that shows the management company, not the clinic name, turns a legitimate charge into “I don’t know what this is” |
Why mainstream aggregators close prescribing clinics in the first place is its own story, told in why Stripe and Square shut down GLP-1 and TRT clinics.
2. What chargeback ratio gets a merchant account flagged?
Visa: 1.5% for US merchants since April 2026. Mastercard: 1.5% and 100 chargebacks in a month for the first tier. Both are the network’s line, not your acquirer’s.
| Program | What is counted | The line | What happens |
|---|---|---|---|
| Visa VAMP — merchant “Excessive” (US) | Fraud reports plus disputes, divided by settled card-not-present transactions | 1.5% from 1 Apr 2026 (was 2.2%), with a floor of 1,500 combined fraud reports and disputes a month | Enforcement fees reported at $8 per disputed or fraudulent transaction, charged to the acquirer and commonly passed on to the merchant |
| Visa VAMP — CEMEA region | Same | 2.2% (unchanged) | Same |
| Mastercard — Excessive Chargeback Merchant | Chargebacks divided by prior-month transactions | 1.5% to 2.99% and 100–299 chargebacks a month | Escalating monthly assessments; leaving needs three months under the line |
| Mastercard — High Excessive | Same | 3% or more and 300 or more chargebacks a month | Larger assessments, and termination becomes likely |
Your acquirer will act well before either line. A network program is the point at which the bank itself is fined, so most acquirers start reviewing a merchant at a ratio closer to 1%. Ask yours for its internal number in writing; it is the only one that matters to you.
Note the floors. A small clinic will rarely reach 1,500 Visa disputes a month, but the ratio still drives the acquirer’s own review, and a single bad month on a small volume produces a large percentage.
3. What is a rolling reserve, and how much will a clinic have held back?
A rolling reserve holds a percentage of each day’s sales for a fixed period, then releases it. It is the acquirer’s protection against the disputes that have not arrived yet.
| Term | Commonly quoted to prescribing clinics | What it means in cash |
|---|---|---|
| Rolling reserve | 5% to 10% of each settlement | On $60,000 a month, $3,000 to $6,000 a month held |
| Hold period | 90 to 180 days | Six months at 10% on $60,000 a month is $36,000 sitting with the acquirer at steady state |
| Upfront reserve | Sometimes asked instead of, or on top of, a rolling reserve | A lump sum before the first transaction |
| Processing rate | Typically several points above a mainstream rate | Compare the all-in rate on your real mix, not the headline |
Negotiate the reserve, not just the rate. A lower reserve or a shorter hold is often easier to win after six clean months than a lower rate, and it returns more cash. Ask at signing what ratio and history would trigger a review of the reserve.
4. Why are memberships and subscriptions the biggest chargeback risk?
Because a recurring charge is disputed by the person who forgot it, and forgetting is not fraud but it is counted like it.
| Membership practice | Effect on disputes |
|---|---|
| A signed membership agreement before the first charge | The strongest single piece of evidence you can send back; a charge the patient signed up for in writing is hard to reverse |
| A receipt for every charge, sent automatically | The patient sees the charge the day it happens, not on a statement three weeks later |
| A reminder before a charge after a pause or a price change | Removes the most common “I did not authorise this” dispute |
| A cancellation path the patient can actually find | A patient who can cancel does not need their bank to do it for them |
| A statement descriptor with the clinic’s own name and phone | The patient calls you instead of the bank |
5. How does a clinic keep a high-risk merchant account open?
Split the rails, prove every charge, and watch one number every month.
| Do this | How often | Why |
|---|---|---|
| Run medication charges on the account underwritten for them, and visits, memberships and aesthetics on the mainstream one | Every charge | A prescription charge on the wrong rail is the fastest way to lose the mainstream account |
| Take card-present payments at the desk wherever the patient is there | Every visit | In-person transactions carry far fewer fraud reports than keyed or online ones |
| Keep the signed consent, the visit note and the receipt together for each charge | Every charge | That bundle is your dispute response |
| Refund quickly when a patient asks | Same day | A refund is a lost sale; a dispute is a lost sale plus a fee plus a strike against your ratio |
| Answer every dispute, even the small ones | Within the deadline | An unanswered dispute is a lost dispute |
| Check your dispute ratio | Monthly | The acquirer is already checking it |
| Tell the acquirer before you change your model | Before launch | A new service line that appears on statements unannounced reads as a hidden business |
How split routing is set up in practice is in which payment processors allow GLP-1, TRT and peptide clinics.
6. What should your clinic software do to protect the merchant account?
Most of the routine above only works if it happens without anyone remembering to do it. Ask any system you are considering:
| Ask | A good answer |
|---|---|
| Can a membership start charging before the agreement is signed? | No. The signature comes first, and the signed copy is kept on the chart |
| Is a receipt sent for every charge without staff pressing anything? | Yes, automatically, for every rail |
| Can medication line items be routed to a different processor from visits? | Yes, per line, so one checkout can land on two rails |
| Can staff pull the consent, note and receipt for one charge in one place? | Yes, from the patient’s chart |
| Does it take card-present payments at the desk? | Yes, on a terminal or a phone |
7. Frequently asked questions
What is the Visa VAMP threshold in 2026?
For merchants in the US, Canada, Europe, Asia-Pacific and Latin America, the Excessive threshold is a 1.5% ratio from 1 April 2026, down from 2.2%, with a floor of 1,500 combined fraud reports and disputes a month. CEMEA stays at 2.2%.
What chargeback ratio is too high for Mastercard?
Mastercard’s Excessive Chargeback Merchant tier starts at a 1.5% ratio with at least 100 chargebacks in a month. The High Excessive tier starts at 3% with at least 300.
Will my acquirer wait until I hit 1.5%?
Usually not. Network thresholds are where the acquirer is fined, so most review merchants well before them. Ask for your acquirer’s internal threshold in writing.
How long is a rolling reserve held?
Commonly 90 to 180 days for prescribing clinics, at 5% to 10% of each settlement. The terms are negotiable, and easier to renegotiate after a clean six months.
Does LegitScript certification lower my chargebacks?
No. It helps you get and keep an account underwritten for prescriptions, and some processors require it, but the dispute ratio is driven by how you bill, receipt and cancel.
Are membership chargebacks counted as fraud?
A dispute claiming the charge was not authorised is treated as a dispute whatever the reason, and in Visa’s program fraud reports and disputes are counted together. A signed agreement and a receipt are what win them back.