How does a Webpay Plus payment work?
The shopper chooses their products on the merchant’s site and selects Webpay as the payment method. The merchant’s provider creates a transaction and sends the shopper to the Webpay payment form, where they choose credit, debit or prepaid and enter their card details. The issuing bank authenticates the cardholder before the payment is authorised, to confirm that the card is being used by its owner. Webpay then returns the authorisation result to the merchant, which confirms the transaction, and an electronic receipt is issued for approved payments. Credit card payments can be a single payment or instalments. The merchant can offer two or three interest-free instalments, or let the shopper pick between 2 and N interest-free instalments, where the merchant sets N up to 12 and funds the cost. Issuers can also offer their own plans of 2 to 48 instalments, with or without interest, and up to three months of deferred payment. For credit cards, a merchant can authorise first and capture later, within a maximum of seven calendar days.
Why does Webpay Plus matter for merchants?
Cards carry most online payments in Chile, and debit is unusually widespread. BancoEstado’s CuentaRUT account, which comes with a debit card, had 15.5 million holders in 2026, and BancoEstado said it processed 52% of Chilean debit card purchases over the previous twelve months. Webpay Plus accepts those Redcompra debit cards next to credit and prepaid cards in one form, so a single integration reaches banked shoppers with any card type. Transbank remains the largest acquirer: a report by the competition authority FNE, summarised by Chócale in July 2026, put it at 40% to 50% of card-not-present transactions in 2025, down from 60% to 70% in 2023, ahead of Mercado Pago and Kushki at 20% to 30% each, after the move to a four-party model. Diario Financiero reported in January 2026 that Banco de Chile, Santander and Scotiabank hold most of Transbank’s shares, with Itaú, Bci and BancoEstado holding the rest. Shoppers know the Webpay form, which helps conversion, and merchant-funded interest-free instalments help sell larger baskets.
What can go wrong?
Most failed Webpay payments happen at authentication or authorisation. Shoppers abandon the bank authentication step, enter wrong card details, or hit their credit limit or daily debit limit. Instalment options must match what the merchant has contracted, or the shopper sees fewer choices than expected. Refund timing also matters. A reversal must be made within three hours of confirmation and always for the full amount; after that, the merchant issues an annulment, which can be partial for debit, prepaid and single-payment or issuer-instalment credit sales, and must be sent within 90 days of the sale through the web services. If the sale has already been paid out, the annulment is deducted from later settlements. Card disputes are a real exposure: Chilean law places the burden of proof on the issuer when a cardholder disputes an unauthorised transaction, so clear authentication and delivery records matter.
How would Omno handle Webpay Plus?
A merchant would offer Webpay Plus in the hosted checkout or through one API, creating the transaction from the same payment request it uses for other methods, with the redirect and return handled for it. The final status would reach the merchant by webhook, which is the source of truth for fulfilment. Omno connects through providers and is not an acquirer. Routing rules set by the merchant could send Chilean cards to Webpay Plus or to another connected acquirer, for example by card type, BIN or amount. If a provider is unavailable or rejects the request, the payment moves to the next provider in the rule until one accepts. Instalment choices would be passed through where the provider supports them, and the routing-decision log would record which acquirer handled each payment so finance teams can reconcile CLP settlements by route.