Billing & plans

Does upgrading mid-month charge me twice?

Example Written by the BuildAPI team to answer a common question.
BT
BuildAPI team
Example
Question

I'm on Starter, eight days into the month, and want Professional. Do I pay the full $39 on top of what I already paid?

BT
BuildAPI team
Example

No. It prorates. You get credit for the part of the month you haven't used and pay the difference. The modal shows the exact figure before you confirm, and that number is what the card is charged — it's computed server-side, not estimated in the page.

What you don't get is a refund of the used part, which is the normal way round.

BT
BuildAPI team
Example

Came out at about $27. That matches what I'd expect. Thanks.