What is BIN sponsorship? A fintech's guide to launching card programs by partnering with a licensed bank.
Table of contents
- How online payments move from buyer to business
- What is a payment gateway?
- What is a PSP and how is it different?
- PSP vs gateway: quick comparison
- PSP vs gateway at a glance
- What really changes for the merchant
- Speed of launch and ongoing work
- Risk, chargebacks and ownership
- Who do you call when something goes wrong?
- Flexibility and control
- Payment provider models: facilitator and aggregator
- When a gateway is enough and when you need a broader partner
- When a gateway plus bank is sufficient
- When a wider PSP setup is a better fit
- Hybrid setups: own routing plus several PSPs or banks
- How to choose a payments partner: key questions
- Coverage and methods
- Pricing and transparency
- Integration and maintenance
- Support and roadmap
- A quick way to think about PSP vs gateway
Once you start selling online, you quickly run into new payment terms. Do you need a payment provider, a separate gateway from your bank, or several tools wired together? When these roles are mixed up, merchants waste time on integrations and pay more in fees than they need to.
By seeing who actually does what in the payment chain, you can pick a setup that matches your size, risk level and growth plans. This guide walks through the payment flow in plain English and shows where gateways, PSPs and other services fit.
How online payments move from buyer to business

To a shopper, online payments look simple: click “Pay”, wait a second, get a confirmation. Behind that, a short chain of steps runs every time.
In a typical card or wallet transaction:
- The customer enters card data or chooses a digital wallet.
- Your checkout sends this data to a payment gateway, which secures and packages it.
- A payment processor and acquiring bank pass the request through the card network to the customer’s bank.
- If the bank approves, funds are reserved and later settled into your merchant account.
Along this chain you may also use:
- A fintech platform that gives you one dashboard to monitor and manage all transactions.
- Extra merchant services such as recurring billing, simple fraud checks or tokenisation.
- APIs that handle transaction processing, refunds and reporting.
Sometimes the merchant connects these parts on their own. In many cases, one company bundles most of them and becomes the main payments partner.
What is a payment gateway?
You can think of a gateway as a secure front door to the payment world. It’s a technical layer that links your checkout to banks and card schemes.
In practice, a payment gateway:
- Powers the hosted payment page or embedded form where card details are entered.
- Encrypts sensitive data and passes it to the processor or acquirer.
- Supports tools like 3-D Secure and basic fraud screening.
- Returns clear success or failure responses to your site or app.
This component is essential for payment processing, but on its own it usually does not:
- Provide or manage a merchant account.
- Take responsibility for disputes and chargebacks.
- Offer advanced routing between many acquirers or detailed analytics.
For a small domestic business that works with one bank and one currency, a bank-provided gateway is often enough. As soon as you add more markets, methods or currencies, a gateway-only model starts to show its limits.
What is a PSP and how is it different?
Many people who type what is psp into a search bar really want to know how it differs from a gateway. PSP stands for Payment Service Provider and usually means a company that covers a wider part of the payment flow.
A PSP typically:
- Handles merchant onboarding and risk checks before you start taking online payments.
- Connects you to one or more acquiring banks in the background.
- Bundles a gateway with its own processing platform.
- Offers richer merchant services such as subscriptions, stored cards, dashboards and chargeback handling.
- Provides SDKs and documentation for payment integration with websites, apps and back-office tools.
Instead of signing separate agreements with a bank, a gateway and a processor, you work with a single payments partner. The PSP coordinates authorisations, payouts and reporting and becomes the central payments hub for your business.
Industry reports from card schemes and consulting firms show that PSPs are gaining share not only among small web shops. Larger brands use them to add new payment methods and regions without rebuilding their own payment infrastructure every time.
PSP vs gateway: quick comparison
The table below sums up the main differences between a PSP and a stand-alone gateway.
PSP vs gateway at a glance
| Aspect | Payment Service Provider (PSP) | Payment gateway only |
|---|---|---|
| Main role | End-to-end payments partner | Technical bridge between checkout and banks |
| Services | Gateway, processing, risk tools, sometimes merchant account | Secure capture and forwarding of card details |
| Onboarding | Business checks, KYC, underwriting | Uses the acquirer’s onboarding process |
| Pricing | Bundled fees per transaction | Gateway fee plus separate bank pricing |
| Scalability | Easier to add currencies, regions and methods | Tied to one processor or acquiring bank |
| Integrations | SDKs, plugins, rich payment API | More basic API, fewer extras |
| Support | One team covering the full payment flow | Technical help focused on gateway issues |
For merchants, the key question is not only “Which option is cheaper?” but “Which one lowers complexity and still leaves room to grow?”
What really changes for the merchant
Speed of launch and ongoing work
With just a gateway, your team must:
- Negotiate terms with an acquiring bank.
- Set up settlement schedules, limits and risk rules.
- Talk to several parties whenever something breaks.
A PSP can bring you live faster because contracts, routing and dashboards are already in place. Scheme updates and security changes are handled by the provider instead of your developers.
Risk, chargebacks and ownership
Disputes are part of any card-based payment flow. A gateway mainly guarantees secure data transport; chargebacks are then handled directly between you and the bank.
A PSP usually takes a more active role here. It can provide basic risk engines, alerts and clear workflows for handling chargebacks. For teams without dedicated risk specialists, this support often matters more than a small difference in fees.
Who do you call when something goes wrong?
If you connect every piece yourself, troubleshooting may involve:
- Gateway support,
- The acquirer’s support team,
- And your shopping-cart or platform vendor.
With a PSP as your primary payments partner, there is usually one support channel that can see the whole payment infrastructure: authorisations, declines, payouts and gateway logs.
Flexibility and control
Running only a gateway with direct bank links gives maximum control but also maximum responsibility. A PSP provides more ready-made tools and dashboards, but sometimes less freedom for deep customisation. As companies mature, many move towards a middle ground that combines both approaches.
Payment provider models: facilitator and aggregator
The phrase payment provider is broad. It can describe a PSP, a bank that offers online payments, or a modern platform built on top of several underlying services.
Two common models inside this landscape are:
- Payment facilitator – a platform signs one master contract with an acquirer and then boards many sub-merchants under that umbrella. Marketplaces and SaaS platforms often use this structure.
- Payment aggregator – the company connects to multiple banks and local methods and exposes them through a single interface and reporting layer.
Both models aim to simplify payment acceptance for smaller businesses. Instead of signing a direct contract with each acquiring bank, merchants plug into the facilitator or aggregator and let that partner manage most of the background work.
When a gateway is enough and when you need a broader partner
When a gateway plus bank is sufficient
A gateway-only model often works well if you:
- Sell in one or two neighbouring countries.
- Accept a single major currency and mainly card payments.
- Have low chargeback risk and a simple product range.
In these cases the relationship with your bank is central, and the gateway acts as a secure pipe. A heavier PSP setup may not provide clear extra value.
When a wider PSP setup is a better fit
A more complete PSP-based solution is worth considering when you:
- Plan to enter new regions or add alternative payment methods.
- Want tools such as instalments, subscriptions or richer analytics.
- Prefer not to build your own risk and chargeback processes.
- Need smoother access to cross-border payouts and multi-currency support.
Businesses with significant international volume also look at how outgoing transfers are handled. Services like 2PayApp, for example, help companies send funds across borders on competitive terms while keeping the same interface they use for daily payment processing.
Hybrid setups: own routing plus several PSPs or banks
More advanced merchants sometimes adopt a hybrid architecture:
- They run a light gateway or routing layer themselves.
- Under that layer they connect to several PSPs and acquiring banks.
- Rules decide where each transaction is sent, based on price or expected approval rate.
This is a form of payment orchestration. It lets you steer traffic to the acquirer that works best for a given region or card type and retry declines through alternative routes. The trade-off is extra technical and operational complexity.
How to choose a payments partner: key questions
When you compare a gateway, PSP or other payments platform, focus on a few practical checks:
Coverage and methods
- Which countries and regions can you serve?
- Which cards, bank transfers and local wallets are supported?
- In which currencies can you settle funds?
Pricing and transparency
- Are fees easy to understand and compare?
- How are refunds and chargebacks priced?
- Are there extra costs for high-risk cards or certain regions?
Integration and maintenance
- Is the documentation clear for your developers?
- Does the platform offer modern SDKs, webhooks and test environments?
- How are API changes and new features communicated?
Support and roadmap
- How quickly does support respond to production issues?
- Do you get a named contact as volumes grow?
- Does the provider’s roadmap align with your plans for new markets and channels?
Thinking through these points early makes it easier to choose a partner that will still work for you a few years from now.
A quick way to think about PSP vs gateway
To keep the distinction simple:
- A payment gateway is the secure door through which payment data leaves your site.
- A PSP bundles that door with banking links, risk tools and extra merchant services.
- Platforms built on top of several banks and processors bring these pieces together in different ways.
For a local shop with straightforward needs, a basic gateway from the house bank may be all that’s required. For a growing or international business, working with a PSP or similar payments partner usually reduces complexity and speeds up expansion.
Taking a fresh look at your current setup — where payments succeed, where they fail, and who helps when they do — is the first step towards building a payment stack that supports your growth instead of slowing it down.