When will a customer with an ongoing membership type that requires upfront payment be charged next?

An ongoing membership type that requires upfront payment typically means that the payment is made at the beginning of the membership term and covers the entire period. Therefore, once a customer has paid upfront, they will not be charged again until the next membership period begins, which might involve renewing or extending the membership. This indicates that an ongoing membership cannot solely depend on upfront payment without a renewal or follow-up charge mechanism in place.

The other options suggest different scenarios that do not apply to a membership defined by an upfront payment structure. For example, mentioning that the customer could be charged at the end of the ongoing period or immediately doesn't align with the nature of an upfront payment. Additionally, mentioning a monthly billing option confuses the terms of membership, as it does not pertain to an ongoing membership requiring only upfront payment. Thus, the correct understanding is that an upfront payment means there won't be any further charges until renewal time, supporting the notion that such a membership cannot function solely on upfront payments.