How to become a payment agent: ISO, referral and reseller programs

Short answer: to become a payment agent you usually start as a referral partner of one or more payment providers: you introduce merchants, the provider underwrites and contracts them, and you earn a commission or a share of the provider's margin (residuals) for as long as the merchant processes. As your book grows you can become a sales agent under an ISO, a registered ISO (independent sales organisation) sponsored by an acquiring bank, a white-label reseller, or a registered agent of a licensed payment institution. Each step brings higher income potential and more obligations. In none of these roles should you handle merchants' funds unless you hold, or act under, the right licence.

This guide explains the agent models, how commissions usually work, how to find merchants, what to check in a programme and the legal points to keep in mind.

Agent models compared

Referral partner (introducer)

• What you do: introduce merchants to a provider through a referral link or form.
• What you do not do: negotiate pricing, sign contracts or handle funds.
• Pay: one-off bounties per approved merchant or a small revenue share.
• Requirements: usually just a partner agreement; low barrier to entry.

Sales agent or sub-ISO

• What you do: sell actively, quote pricing within a range, help with onboarding paperwork, support the merchant.
• Pay: residuals, typically a share of the margin the ISO or provider earns above its own costs.
• Requirements: contract with an ISO or PSP; sometimes training and background checks.

ISO / MSP (independent sales organisation / member service provider)

• What you do: sign merchants under a sponsor bank's programme, often with your own branded merchant agreements and your own sales agents.
• Registration: the sponsor (acquiring) bank registers you with the card schemes; Visa uses the term ISO and Mastercard uses MSP. Registration is typically renewed annually.
• Pay: larger residuals, more pricing control.
• Liability: depending on the contract, you may share losses from merchant fraud or chargebacks.

Payment facilitator (PayFac)

A step beyond an ISO: you onboard sub-merchants under your own master merchant account and handle funds settlement. This requires acquirer sponsorship, scheme registration, strong risk management and, in many countries, a licence. See payment aggregator vs payment gateway vs PSP.

White-label reseller

You sell a provider's platform under your own brand. The provider remains the processor of record or the licensed party; you own sales, marketing and first-line support.

Registered agent of a payment institution (EU and UK)

Under PSD2 and the UK Payment Services Regulations, a licensed payment institution can register agents that provide payment services on its behalf. The agent appears in the regulator's register, and the institution remains responsible for it. This is the main lawful route if your role involves handling payment transactions rather than only introducing clients.

A note on Russian terminology

In Russian law, "платёжный агент" has a specific meaning: a business that accepts payments from individuals on behalf of suppliers (for example through terminals) under Federal Law 103-FZ, with its own obligations. In the payments industry, "agent" in the sense of this article usually means a sales or referral partner.

How agent commissions usually work

Programmes differ widely, so read the schedule carefully. Common elements:

• Upfront bonus: a fixed amount per approved or activated merchant.
• Residuals: a percentage of the provider's net revenue from each merchant, paid monthly while the merchant processes.
• Basis on margin, not turnover: most residuals are calculated on the provider's margin above interchange, scheme fees and its own costs, so "a share of turnover" headlines can be misleading.
• Clawbacks: bonuses can be reclaimed if the merchant leaves early or is terminated for fraud.
• Vesting and portability: whether residuals continue after you stop working with the provider, and whether you can move your portfolio.

Step-by-step: how to become a payment agent

1. 1.Pick a niche. Agents succeed when they know an industry: e-commerce in a specific country, travel, SaaS, high-risk verticals, or merchants needing local payment methods.
2. 2.Shortlist providers. Choose licensed PSPs and acquirers that fit your niche; browse the PSP catalog and card acquiring providers.
3. 3.Check each programme. Licence status, who signs the merchant, residual basis, payout schedule, reporting access and termination terms.
4. 4.Sign the partner agreement. Keep copies of commission schedules and every amendment.
5. 5.Build a pipeline. Use your network, industry events and directories. On Nominal hub you can see merchants and requests looking for payment solutions, and offers from providers looking for partners.
6. 6.Qualify merchants honestly. Explain the provider's requirements and timelines; never promise approval.
7. 7.Track your book. Keep your own record of referred merchants, dates and expected residuals, and reconcile against provider statements monthly.

Due-diligence checklist for agent programmes

• Is the provider licensed for the services and countries in question? Check the regulator's public register.
• Who is the contracting entity for merchants, and who for agents?
• How are residuals calculated, reported and paid, and in what currency?
• What happens to residuals if the provider is acquired, changes pricing or terminates you?
• Are there non-solicitation clauses that stop you moving merchants to another provider?
• Is the programme asking you to collect funds, use your own accounts or misdescribe merchants? If so, walk away; see payment processing without a licence.

Common mistakes of new agents

• Signing with too many providers at once, then failing to learn any product well enough to sell it.
• Chasing high-risk merchants with promises of approval that the provider cannot keep, which damages relationships on both sides.
• Relying on the provider's reports alone instead of keeping an independent record of referred merchants.
• Ignoring contract terms on termination and non-solicitation until a provider changes ownership or pricing.
• Underestimating support: merchants call the agent first when settlement is late or an account is frozen.

Compliance basics for agents

• No misrepresentation: describe the merchant's business accurately to the provider. Disguising a high-risk business is a common cause of terminations and liability.
• Data protection: handle merchants' documents securely and only for onboarding.
• AML awareness: report suspicious behaviour to the provider; do not coach merchants on how to pass checks.
• Identity: be transparent about whom you represent. Our article on verifying payment partner representatives explains why merchants check this.

If you need advice on structuring an agency or applying for registration, the compliance consultants section lists firms that specialise in payments.

FAQ

Do I need a licence to be a payment referral partner?

Usually not, if you only introduce merchants and do not negotiate on the provider's behalf or handle funds. If you provide payment services yourself, you need a licence or registration as an agent of a licensed institution.

What is the difference between an ISO and an agent?

A registered ISO is sponsored by an acquiring bank and registered with the card schemes, can use its own merchant agreements and often has its own agents. An agent sells under someone else's programme and contract.

How much can a payment agent earn?

It depends on the programme, the merchants' volumes and the provider's margins. Income usually comes from residuals over time rather than one-off fees, so a portfolio of steady merchants matters more than a single large deal.

How do I find merchants for a payment gateway?

Focus on a niche, attend industry events, partner with agencies and developers who build checkouts, and use directories. Nominal hub lists merchants, requests and events across the payments industry.

Is Nominal hub an agent programme?

No. Nominal hub is an information directory, not an intermediary. You contract directly with providers after your own checks; for questions about listings, see the contacts page.