What a payment gateway does
The gateway is the technical system that sits between the betting platform and the financial system. When a player decides to deposit, the gateway generates the charge — the PIX QR code or copy-paste code, or the card-data capture screen — sends it for processing to the acquirer or PSP, and returns confirmation to the platform once the funds are received. On withdrawal, the role reverses: the gateway receives the payout instruction from the backoffice, sends it for execution, and returns confirmation that the money reached the player's account. At no point does the gateway hold the player's balance — that's the platform's PAM. The gateway only processes the transaction; the layer that decides whether it's allowed to happen at all, based on balance and business rules, is the player account layer.
Are a gateway, an acquirer, and a PSP the same thing?
No. They're three different roles, often confused because a single commercial vendor can offer more than one of them at once. The gateway is the technical layer that processes and routes the transaction. The acquirer is the licensed financial institution that actually moves the money through the banking system, accredited by the card networks or authorized to operate PIX. A PSP (Payment Service Provider) is a broader term covering companies that bundle gateway, acquiring, and other financial services under a single contract. An operator can contract all three roles from one PSP, or contract an independent gateway that connects to multiple acquirers — the second option gives more control over redundancy but requires more technical integration.
Payment gateway fees
A payment gateway typically charges across several lines at once, and understanding each one separately avoids surprises on the final invoice:
| Fee model | How it works | Where it shows up most |
|---|---|---|
| MDR (percentage of the transaction) | A percentage deducted from every amount processed | Credit/debit cards, and sometimes PIX |
| Flat fee per transaction | A fixed amount, regardless of the deposited value | Common on PIX, especially at lower volumes |
| Withdrawal fee | Charged on payout, separate from the deposit fee | Present in nearly every contract |
| Monthly fee or integration fee | Fixed cost to maintain the contract or for technical setup | Direct contracts with a specific acquirer or PSP |
Why a serious operation uses more than one gateway
No gateway or acquirer has a 100% approval rate — declines happen due to the issuer's own anti-fraud rules, momentary instability, or holds triggered by atypical volume, which is common in iGaming, where deposit spikes around sports events are normal but can trip automated alerts. Running on a single gateway means any one of these failures halts deposits and withdrawals until it's resolved. With multiple gateways and automatic routing between them, a transaction declined by the first one is automatically retried on the second, with no interruption visible to the player. The gain isn't just technical resilience — it's approval rate: each gateway performs differently by issuing bank, time of day, and day of the week, and spreading volume across providers measurably raises the overall approval rate, without anyone having to manually switch gateways on every decline.