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For providers

How payment agents and ISOs find high-risk merchants

Agents and independent sales organizations bring merchants to acquiring banks. This guide explains the role as US bank examiners’ guidance describes it, what the acquirer stays responsible for, and where Zolution’s leads and private invitations fit in.

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What agents and ISOs do

In its guidance for bank examiners, the Office of the Comptroller of the Currency (OCC) describes ISOs and member service providers (Mastercard’s term) as functionally similar third parties that acquiring banks contract with. The ISO solicits merchants and can perform services for the acquirer such as processing merchant applications and charge-backs, detecting fraud, servicing merchant customers, selling or leasing terminals, and processing and authorizing transactions.

The same guidance describes agent banks: often community banks that refer merchants to an acquirer. A referral bank typically does not assume liability for merchant losses; an agent bank that indemnifies the acquirer does.

Registration and responsibility

The OCC’s guidance says acquirers must register third-party organizations with the card association before accepting their services, and must pay an initial registration fee and annual fees for each one. It notes that this fee is typically passed on to the third-party organization.

Registration does not move responsibility. After it, the acquirer remains responsible for complying with the association’s rules on third-party relationships, and those rules make the acquirer liable for its third parties’ actions. The association also requires the acquirer to submit information about its third parties regularly.

Finding merchants who are asking for offers

On Zolution, merchants publish a request for payment offers, and you see the requests that match the coverage you declare: the industries, merchant countries and customer markets you support, and optionally the monthly volumes you accept.

Before you quote, a lead shows seven facts and nothing more. The merchant’s private details, such as total revenue, revenue basis, signer answers, email address and other providers’ proposals, are never shown to you.

What a lead shows before you quote
FactWhat it tells you
Business labelThe name the merchant uses for its request
WebsiteThe business website the merchant gave
IndustryOne of the eight request categories, such as RUO peptides or gambling
Registration countryWhere the merchant’s company is registered
Customer marketsUSA, EU, both, or worldwide
Volume for this providerThe monthly processing volume the merchant expects to give one provider
Trading sinceThe year the merchant says it started trading

Scroll the table to see all columns.

Bringing your own clients

Many of your merchants will come from your own contacts. Create a private application link for a named client: they confirm their email, add their business details and choose which document links to release to you. You can do this without setting up lead coverage first.

A private invitation stays between you and the named merchant. It does not publish a request or invite other providers. The merchant can separately choose to request other offers.

Sending an offer merchants can compare

A Zolution proposal keeps each term in its own field, so a merchant compares like with like: the processing fee and the fixed transaction fee, the rolling reserve and its holding period, the settlement delay and payout schedule, payout fees, the MID structure, the contracting company, the validity, other fees and conditions, the gateway and the connection method. Optional volume tiers each carry a full copy of the terms.

Once a merchant continues with your offer, the application keeps that exact revision. You review the released document links and the website, request changes in the application’s conversation, record your decision and publish setup instructions.

Questions, answered

Do I need lead coverage before inviting my own client?

No. You can create a private application link for a named client first, and set your coverage later if you also want matching leads.

Will merchants see my company before I send an offer?

Your offer names your company and the contracting company when you send it. Public pages never name or rank providers: provider identities are for members only.

Sources

  1. Comptroller’s Handbook: Merchant Processing (Version 1.0, August 2014; reputation-risk references removed 20 March 2025)

    Office of the Comptroller of the Currency · Opened 10 October 2026

  2. Frequently asked questions · For solutions

    Zolution · Opened 10 October 2026

  3. Zolution for payment solutions

    Zolution · Opened 10 October 2026

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