Turn online payments into a growth engine

Online payments are electronic transactions initiated over the internet—typically through a website, portal, mobile app, or secure payment link. When a customer is ready to pay, they enter their card, bank account, or digital wallet details into a secure checkout form. CSG Payments’ gateway encrypts and tokenizes that data the moment it's submitted, keeping sensitive information off merchant account servers throughout the transaction.

From there, CSG Payments’ gateway routes the transaction to the acquiring bank, which sends it through the relevant card network or ACH rail to the customer's issuing bank for authorization. The issuing bank approves or declines the transaction and returns a response—typically in seconds. Once approved, funds are settled from the customer's account to the merchant's bank account, completing the payment.

CSG Payments’ secure gateway supports credit card payments, debit cards, ACH/eCheck, and digital wallets including Apple Pay, Google Pay, PayPal, and Venmo. Merchants can integrate via hosted payment pages, embedded checkout forms, or REST APIs—giving teams flexibility to launch quickly or build deeply, depending on what their systems require.

An online payment gateway securely captures payment information from a customer, encrypts it, and transmits it to the payment processor for authorization. The processor communicates with the card network and issuing bank to approve or decline the transaction, then returns a response—typically in under a second. Our payment gateway supports cards, ACH, and digital wallets across all channels.

CSG Payments overlays on top of a merchant's existing website as an iframe or JavaScript component, allowing customers to complete payment without being redirected. This keeps the checkout experience seamless and on-brand, reduces PCI scope, and supports cards, ACH/eCheck, and digital wallets, all without customers leaving the merchant's site.

CSG offers multiple integration options for hosted payment forms, embedded iframe/JavaScript overlay, lightweight client-side tokenization, and REST API for full control over the payment lifecycle. Each option balances ease of integration with customization and PCI scope reduction based on the merchant's technical needs.

Yes. CSG Payments supports recurring billing management, customer tokenization, and stored payment methods. Tokens are created for cards and bank accounts, enabling future one-time or recurring transactions without re-entering sensitive data. CSG automatically refreshes expired card credentials, maintaining continuity for subscription and recurring billing programs.