This document provides guidance on payment for a visa-upon-arrival in Vietnam. It outlines four payment methods: 1) credit card through Gate2shop, 2) credit card through PayPal, 3) Western Union, and 4) bank transfer. For each method, the process is described as filling out an online form with passport details, selecting the payment option, and submitting the form, which will then redirect to the payment provider for secure payment of the service fee. The service fee paid is for arrangement of documents only, and does not include the stamping fee which must be paid directly at the airport in Vietnam.