Yep! We will automatically take into account any unused portion from your previous plan and deduct it from the upgraded plan's fee.
You're currently on the Premium (Monthly) plan and your next billing date is 30 September. You wish to upgrade to the All Day (Annual) plan on 15 September. This means we will deduct $4.95 (15 days) from the upgraded plan's fee. See more detailed calculation below:
(15/30) x $9.90 = $4.95