Merchant Processing Services: Bank, ISO or Payment Facilitator?

On this page 7 sections

1. Every Merchant Processing Service Ends at an Acquiring Bank
2. ISO vs. Payment Processor: Who Sells and Who Settles
3. Payment Facilitators Underwrite Later, Not Never
4. Payment Facilitator vs. Merchant Account Side by Side
5. Matching the Provider Type to How You Sell
6. Questions That Show Who Stands Behind an Offer
7. Get the Answers in Writing Before You Compare Rates

Key takeaways

• Ask any provider to name its sponsor bank. Under Visa's rules, only an acquirer can register an ISO, so a real ISO always has one.
• Visa's $1 million sponsored-merchant threshold counts only Visa volume. Crossing it changes your contract and doesn't shut down your account.
• A PayFac does most of its review after you start processing, so a large, unusual ticket is a common trigger for a held payout.
• Once your card volume is high enough, a small gap in effective rate adds up to real money. Get an interchange-plus quote at that point.

Merchant processing services reach you in one of three ways. You can buy directly from a bank or processor. You can go through an independent sales organization (ISO), which resells a sponsor bank's card acceptance. Or you can sign up with a payment facilitator (PayFac) such as Square or Stripe, which puts you under its own master account. All three end at an acquiring bank. What differs is whose agreement you sign, when you get underwritten and who can pause your deposits.

Those differences matter more than the headline rate. A PayFac approves you in minutes and looks closely at you later. A dedicated merchant account looks at you first, so later reviews are less likely to surprise you as long as your business matches what you were approved for. Pick the wrong model for your ticket sizes and you'll find out the day a large payment gets stuck.

Every Merchant Processing Service Ends at an Acquiring Bank

One card sale involves several parties, even if you only ever talk to one. Our plain-English guide to merchant services covers the basics. Here is who does what.

The acquiring bank matters most and gets mentioned least. It is a member of the card networks and answers for every merchant it sponsors. Liability runs uphill. Say a merchant can't cover its chargebacks or disappears after collecting prepayments. The loss passes from the merchant to whoever placed the account, then to the acquirer, which the network debits. This overview of PayFac and ISO risk walks through the chain. That exposure is why the bank, or the processor working under its rules, sets underwriting standards and decides on reserves.

The processor does the technical work. It sends authorizations to the networks and moves funds toward your bank. It also decides which terminals and gateways your account supports and when your daily batch cuts off. Our guide to how long credit card deposits take explains cutoff times and weekend gaps.

ISO vs. Payment Processor: Who Sells and Who Settles

Visa's own definition answers what an ISO is. Its Third Party Agent functional descriptions describe an ISO Merchant (ISO-M) as an entity that finds or refers merchants on behalf of an acquirer. Its work can include sales, onboarding support, customer service and selling or leasing terminals. An ISO-M does not process transactions, receive settlement funds or access card data.

An ISO also can't register itself with the networks. Only Visa clients, meaning issuers and acquirers, can register agents, and Mastercard works the same way. So every legitimate ISO has a bank behind it and should be able to name that bank right away.

For the record, MannyPay is a registered ISO/merchant service provider of Esquire Bank (Jericho, NY), Merrick Bank (South Jordan, UT) and Mission Valley Bank (Sun Valley, CA).

An ISO that works with several sponsor banks can place a business with the acquirer that suits it. For high-risk merchant accounts, that placement decides whether you get approved at all, because only some acquirers accept certain industries. ISOs also bundle hardware and shopping cart connections that are set up to work together. Many offer cash discount, dual pricing or surcharging programs. All of these must follow card network rules, and surcharging must also follow state law. Our rundown of credit card surcharge rules covers what's allowed.

You pay for this through a margin. ISOs buy processing at wholesale ("buy rates") and mark it up. A markup is normal. What matters is whether you can see it. Interchange-plus pricing shows the markup on its own line, while tiered and bundled pricing hide it inside the rate. Our comparison of interchange-plus, flat-rate and tiered pricing shows how to read each one. If an agent or sub-ISO sold you the account, find out who answers the phone and who can change your pricing once that salesperson moves on.

Payment Facilitators Underwrite Later, Not Never

Visa defines a payment facilitator as an entity that contracts with an acquirer to deposit transactions or receive settlement on behalf of a "sponsored merchant." That is Visa's term for a sub-merchant. In practice, the PayFac holds one master account and thousands of businesses process under it. Square and Stripe work this way, and so do many booking and invoicing apps.

The appeal is real. Signup takes minutes and you pay one flat rate, which suits a new business or a weekend market seller.

The catch is timing. A PayFac runs a light check at signup and relies on monitoring once you start processing. A ticket far above your usual size, or a run of chargebacks, can set off its automated risk systems. The result might be a held payout or a rolling reserve, and sometimes a closed account. Picture a consultant who bills $400 sessions and then sends one $15,000 retainer invoice (illustrative). Nobody approved that account for a five-figure ticket, so the payout pauses for review. "Instant" applies to the signup. It doesn't mean your account is settled for good, as we explain in what instant approval merchant accounts really mean.

The $1 Million Visa Rule Is a Contract Trigger, Not a Ceiling

Plenty of sellers believe a PayFac has to drop them at $1 million. The rule is narrower than that. Once a sponsored merchant's annual Visa sales pass $1,000,000, Visa's rules say the acquirer must be added to the merchant acceptance agreement. The PayFac can keep running the account, settlement included.

Timing depends on whether you're new. A merchant that joins a PayFac already above $1 million needs the direct agreement before its first transaction. An existing merchant that crosses the line has two years. Visa also drops the requirement in one case, according to this summary of Visa's payment facilitator rules. The PayFac must have held the merchant for at least two years with the same acquirer and report its activity, and the acquirer must keep oversight.

Mastercard sets its own threshold and has changed it before. It raised the figure from $100,000 to $1 million in 2014. Ask your provider which Mastercard figure applies today.

Here is the Visa rule applied to a growing online store. Every number is illustrative, based on these assumptions:

• Card sales of $95,000 a month today
• Visa cards make up 60% of that volume
• Sales grow 50% over the next year

Today, the store's Visa volume is $57,000 a month, or $684,000 a year. Its total card sales are $1.14 million, which is over $1 million. The rule still doesn't apply, because it counts only Visa volume. After 50% growth, monthly card sales reach $142,500. Visa's share becomes $85,500 a month, or $1,026,000 a year, and now the store crosses the line.

Crossing it changes the store's contract. Its checkout stays the same. The decision that matters is price. On $1.71 million in annual card sales, an effective rate that is 0.30 percentage points lower saves $5,130 a year (illustrative). That's the time to get an interchange-plus quote and compare it with the flat rate.

Payment Facilitator vs. Merchant Account Side by Side

A dedicated account can still have holds. Any acquirer can hold funds or require a reserve under its agreement. The difference is that your risk was reviewed before your first sale, so you face fewer surprises later. Our merchant account vs. payment aggregator comparison goes deeper.

Matching the Provider Type to How You Sell

Retail shops with steady walk-in traffic do well on a dedicated account paired with POS systems that track inventory across registers. If your approved volume already accounts for December, a risk model is less likely to flag the holiday rush as unusual.

Restaurants and bars handle tips, open tabs and a batch at the end of the night. Pay-at-table devices and tip adjustments have to be set up carefully so tickets settle correctly. That takes more setup than a basic flat-rate app is built for. See how we handle restaurant and bar payment processing.

Law offices and consulting firms take fewer, larger payments, often by invoice or over the phone. Big, irregular tickets are exactly what sets off reviews on aggregated accounts. A dedicated account approved for your real ticket sizes is the steadier choice, especially paired with a virtual terminal for phone and invoice payments.

Online stores can launch on a PayFac. Once you add subscriptions or international buyers, or get close to the Visa threshold above, consider a dedicated account with online payment processing built around your cart.

Regulated and high-risk businesses need an ISO whose acquirers accept their industry. They also need to describe the business completely and accurately on the application. If you can't tell which side you fall on, read what processors look for in a low-risk business.

Questions That Show Who Stands Behind an Offer

1. Who is the sponsor bank, and who is the processor? A legitimate ISO or agent can name both right away.
2. Is approval "guaranteed"? No honest provider promises that. Underwriting happens before you process or after, but it always happens.
3. Did anyone suggest describing your business differently? Miscoding your industry, or running sales through another merchant's account, breaks card network rules. It can also put you on Mastercard's MATCH list, which acquirers check when you apply. Listings stay for five years, and excessive chargebacks (code 04) are among the most common reasons. Walk away.
4. Can the rep explain the pricing line by line? Interchange, network fees and markup should add up to the total. Test it with our method for comparing merchant processing quotes side by side.
5. Is the terminal on a separate lease? Read the lease as its own contract. Its terms don't necessarily end when the processing agreement does.
6. What triggers a hold, and whom do you call? Vague answers now predict a bad week later.

Our list of 12 questions to ask a merchant service provider covers the rest of what to check before you sign.

Get the Answers in Writing Before You Compare Rates

Send every provider on your list the same short email. Ask them to name the sponsor bank and processor and to confirm whether you get your own merchant ID. Also ask what happens to your deposits if a ticket comes in at ten times your average. The replies tell you which of the three models you're buying, and only then does comparing rates mean anything.

To have MannyPay review your current statement, request a free merchant processing quote. A specialist responds within one business day. Approval and pricing depend on underwriting. This article is general information, so check legal and tax questions with a qualified professional.

Sources

1. Visa Third Party Agent Functional Descriptions
2. What Is an ISO/MSP in Payment Processing? (Corefy)
3. PayFac vs ISO vs Merchant of Record: Who Bears the Risk
4. Merchant Account vs Payment Facilitator (Relyon)
5. Payment Facilitator: Visa Rules and How to Register (Tagada)
6. MasterCard: Sub-Merchants Don't Need To Own Accounts Until Volume Hits $1 Million (Digital Transactions)
7. Mastercard MATCH List: What It Is and How to Get Off It (ChargebackStop)

AR

About the author

Adrian Reyes

Adrian Reyes is Senior Payments & Fintech Editor for Beyond the Swipe, covering credit card processing, merchant accounts, payment technology and processing fees.

This article is for general educational purposes and is not legal, tax or financial advice. Card network rules and state laws change; confirm current requirements for your business.