When you enroll in a monthly plan, you are billed for the first month up-front and then again on the same date each month moving forward until you cancel. When you enroll in an annual plan, you are billed for the first year up-front and then again on the same date each year moving forward until you cancel.
Projects in monthly plans follow the completion date of the billing profile. You can view this information from your dashboard. These projects are invoiced and charged along with any overage accrued during the previous month.
While your subscription renewal follows a monthly or yearly schedule from the date in which you started, the overages are reset on the 1st day of the month. Going over the monthly quota of resources incur an overage charge as outlined in your plan. Overages are not invoiced immediately though. To leave some room for manual intervention we issue invoices on the second working day of the month, so we can still do manual adjustments or check if necessary. Also we have some rules in place to minimize the number of payments that we process and documents that we generate. The rules are:
overages are billed only if they are more than €100, otherwise they will be added as "unbilled charges" that you might see in your dashboard
unbilled charges are then added automatically to the following subscription invoice, or they are billed when they go over the above threshold
on the invoice that you will receive for the overages, we'll show the date in which the overages are computed, which is always on the month following the one on which the overages are computed. For example if you see Oct 2nd it refers to the overages of September.
if you have existing credit, for example due to a plan change that generates credit, and the overages are fully paid by the credits, then the invoice is generated immediately even if below the €100 threshold
When you go over the plan limits for features like models, collaborators or others that you have control over (e.g. not traffic, API calls, video), then we don't immediately issue an invoice for that.
The changes are computed every 60 minutes to avoid having multiple transactions and documents when changing limits. Say for example that you are adding two collaborators one after the other, we try to do a single plan change instead of two.
Similarly to what happens for overages, if the payment is covered by existing credit, then the change is done immediately, otherwise we add the amount to the unbilled charges until it reaches the €100 threshold or a new subscription invoice is generated.