Notes
Rolling Reserves for Peptide Merchant Accounts: How They Work and What to Get in Writing
How a rolling reserve works, why banks hold one for research peptide merchants, what public numbers say, and the reserve terms to get in writing.
By David Ruderman ·
A rolling reserve is a share of each day’s card sales that the processor holds for a set period, then releases on a schedule. It is the merchant’s money, not a fee. It sits there to cover refunds and chargebacks that can arrive months after a sale. Research peptide merchants should expect it to come up in underwriting. The terms matter more than the headline percentage, so get all of them in writing before the first transaction.
How does a rolling reserve work, in plain numbers?
PayPal’s User Agreement (last updated September 14, 2026) has the clearest public example. A reserve “could be set at 10% and held for a 90-day rolling period.” Money received on day 1 is released on day 91. Day 2 is released on day 92, and so on.
So the held balance builds for the first 90 days, then levels off. Here is our illustration with round numbers. It is not a quote.
| Period | Held balance (approx.) | Releases |
|---|---|---|
| Month 1 | $10,000 | None yet |
| Month 2 | $20,000 | None yet |
| Month 3 | $30,000 | Start around day 91 |
| Month 4 onward | About $30,000 | Each day’s release roughly offsets each day’s new hold |
At steady state the amount held is roughly the percentage, times monthly sales, times the months held. Payments & Risk, a practitioner reference, works the same math: a 10% reserve held 90 days on $200,000 a month leaves about $60,000 with the processor.
Why do banks hold reserves for peptide merchants?
Because the bank pays if the merchant can’t cover its chargebacks. The OCC’s Merchant Processing handbook says that contingent liability “can span several months of the merchant’s sales volume because of the cardholder’s rights to dispute the charge.” It describes funding a reserve “by setting aside a lump sum or by withholding a portion of each day’s proceeds until a specific balance has been reached.”
Processors say the same in SEC filings. Shift4’s 2025 Form 10-K states that if a merchant can’t reimburse a chargeback, “we are responsible for the amount of the refund paid to the cardholder.” Fiserv reported merchant credit losses of $128 million in 2025, $108 million in 2024 and $80 million in 2023 (Fiserv 2025 Form 10-K, filed February 19, 2026).
Bank regulators expect it too. The FDIC’s guidance on payment processor relationships (FIL-3-2012, revised February 2026) says bank agreements should include “adequate reserve requirements to cover anticipated charge backs.”
None of this is specific to peptides. It is how card acceptance works for any category a bank treats as higher risk.
What kinds of reserves and holds are there?
| Type | How it works | Where it is described |
|---|---|---|
| Rolling reserve | A percentage of each day’s sales, each slice released after a set period | PayPal User Agreement; OCC handbook |
| Upfront or minimum reserve | A lump sum held from the start, or built from sales until a target balance is reached | PayPal User Agreement; OCC handbook |
| Payout hold | Payouts stop while the processor reviews something specific, such as a volume or refund spike | Payments & Risk |
| Post-closure hold | The balance is kept after the account ends, to cover late disputes and refunds | UK Financial Ombudsman decision |
How large are reserves for research peptide merchants?
We have not found a public benchmark for research peptides specifically. Treat any single number with care.
General ranges exist. Payments & Risk puts a typical rolling reserve at 5% to 10% per transaction, released 90 to 180 days after the transaction date, and an upfront reserve at $5,000 to $50,000 or more.
Merchant reports vary widely. One startup peptide seller on r/PaymentProcessing described quotes of a $50,000 reserve from most high-risk processors versus $5,000 from one (thread). That is a single report.
What moves the number is mostly what the bank can verify: processing history, refund and dispute ratios, how orders are fulfilled, and the business model. Wholesale (B2B) suppliers with identifiable business buyers are reviewed differently from retail (B2C) sellers.
What should the reserve terms say in writing?
A reserve with clear terms is a cost of doing business. A reserve with vague terms is a risk. Before signing, get each of these in the merchant agreement or a signed schedule:
- The percentage, and whether it applies to every transaction.
- The hold period, and whether it counts from the transaction date or the payout date.
- Any cap on the total amount held.
- The release schedule: daily, weekly or monthly.
- Any upfront amount, and when it comes back.
- What can trigger a change, and how much notice is given.
- When the terms will be reviewed, for example after six months of clean processing.
- How long funds are held after the account closes.
Default platform terms are open-ended. Shopify can “change the terms of a Reserve Account at any time, for any reason” (Shopify Payments terms). Stripe can change reserve terms if it believes the risk has changed (Stripe Service Terms). A negotiated merchant agreement can be more specific. Ask for it to be.
Read the clause before signing. On r/smallbusiness, a new merchant described finding a clause holding 10% of all sales for the first six months, after the fact (thread). A support email is not a contract term either. If a rep says there will be no reserve, ask for that in the agreement.
Can a reserve be reduced later?
Sometimes. No one can promise it, and the bank decides. The case for a reduction is a track record. Payments & Risk lists the usual asks: a lower percentage, a shorter release period, or a cap on the total. It says the strongest case is clean history: six months or more with low chargebacks.
The practical move is to agree the review date up front. Then refund quickly, keep the chargeback ratio well under network lines, and keep the site exactly as it was underwritten.
What happens to the reserve if the account closes?
Expect it to be held for a while. Chargebacks on past sales keep arriving after closure. A UK Financial Ombudsman Service decision on a 2025 Stripe closure (DRN-6072193) called a 120-day hold from closure “reasonably standard within the industry.” It still ordered 8% simple interest, because the release date kept moving without a clear reason.
When switching processors, do not close the old account the same day. Payments & Risk advises keeping the old processor active for 120 days or more, because chargebacks on old transactions still come in there.
If funds are held, ask for the processor’s risk or underwriting team, not frontline support. Get the reason and the release date in writing (Payments & Risk).
How should a reserve factor into the cost of processing?
Treat it as cash flow, not price. The rate is what processing costs. The reserve is money that comes back later.
ResearchPay’s published ranges are about 6% to 9.5% per transaction for retail (B2C) and about 4% to 6% for wholesale (B2B), subject to underwriting. Any reserve is set by the acquiring bank and stated in the agreement before the first sale.
Put the reserve in the cash forecast for the first 90 to 180 days. A store that needs every dollar of week-one revenue to pay suppliers will feel a 10% hold.
Related: Does Stripe allow peptides? and why peptide merchants lose their accounts. Have an offer with reserve terms you want checked? Send it over. More on how we work with merchants.
Sources
- PayPal User Agreement (US), holds and reserves, PayPal, last updated Sept 14, 2026.
- Comptroller’s Handbook: Merchant Processing, OCC, v1.0 Aug 2014, updated Mar 2025.
- FIL-3-2012: Payment Processor Relationships, Revised Guidance, FDIC, revised July 2014 and Feb 2026.
- Form 10-K for fiscal year 2025 (chargeback liability), Shift4 Payments, filed Feb 27, 2026.
- Form 10-K for fiscal year 2025 (merchant credit losses), Fiserv, filed Feb 19, 2026.
- Holds and Reserves, Payments & Risk, read Oct 19, 2026.
- Negotiating and Comparing Processors, Payments & Risk, read Oct 19, 2026.
- Shopify Payments Terms of Service, Reserve, Shopify, read Oct 19, 2026.
- Stripe Services Agreement, Service Terms, Reserve, Stripe, read Oct 19, 2026.
- Decision DRN-6072193 (Stripe account closure and fund hold), UK Financial Ombudsman Service, 2025 closure, decision read Oct 19, 2026.
- Startup peptide company reserve quotes (merchant post), Reddit r/PaymentProcessing, read Oct 19, 2026.
- Reserve holds taking 10% of every sale (merchant post), Reddit r/smallbusiness, read Oct 19, 2026.
ResearchPay works only with merchants that sell products labeled and marketed for research use only, not for human or animal use. Pricing, reserves and settlement terms are set by the acquiring bank during underwriting. This is general information, not legal advice.