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When you make changes to your Air subscription mid-cycle—like upgrading plans, adding users, or increasing storage—you may notice a higher-than-expected invoice. This is often due to prorated charges or storage overages, which we explain below.
Prorated billing applies when eligible subscription changes are made during an active billing cycle. Some updates can be completed in workspace settings, while other plan or billing changes may require help from Air if the option you need does not appear there.
For step-by-step self-serve upgrades, see Upgrading your workspace to a paid subscription.
Prorated billing means you're only charged for the portion of your billing cycle that reflects recent changes. These changes can include:
Adding or removing users
Upgrading or downgrading your plan
Increasing or decreasing included storage
You'll only be charged for the time the plan or feature was active, not a full billing cycle.
🧾 Only pay for the time you use 🧾
Monthly and annual subscriptions are billed in advance, and eligible mid-cycle plan changes can create credits and charges that appear as prorated adjustments on your invoice. Depending on the type of change and where you are in your current billing cycle, those adjustments may appear right away or on your next renewal invoice.
When charges appear
Some subscription changes take effect immediately and are reflected through proration, such as eligible plan, seat, or storage updates made during a billing cycle.
Billing cadence changes, like moving from monthly billing to annual billing, depend on the options available in your workspace settings. If you do not see the plan or billing option you need, contact Air for help instead of expecting a self-serve change.
📦 Storage Overages
A common reason for prorated charges is exceeding your plan’s storage limit. For example:
If your plan includes 2 TB of storage and you go over, additional storage charges may apply.
You can view your usage in Settings → Plan.
To avoid surprise costs, we recommend proactively managing your storage and user count ahead of your renewal date.- Monitor your storage usage regularly to ensure it stays within your plan’s limits.
Optimize storage by deleting unneeded files or data.
Consider upgrading your plan if higher storage demands are anticipated in the future.
Check your renewal invoice for line items that reference the following:
Pro, Plus, Creator or Enterprise – Your monthly or annual subscription
Remaining Time – A prorated fee for added services
Unused Time – A credit for removed services
📌 Quick Refund Policy Reminder
Air does not offer refunds or prorated refunds for subscriptions paid in advance.
🧠 Example invoice with prorated charges
This example shows a self-serve plan change. Not all subscription or billing changes follow this exact path.
Let’s say your billing date is the 8th of each month:
On the 28th of this month, you upgrade from the $100/month Plus plan (legacy) to a $600/month plan.
Your next full charge of $600 will happen on the 8th of the next month.
Since your renewal date remains the same the next invoice will also include an approximate $180 charge to cover the ~10 days of access to the new plan and credit due for unused time on the previous plan between your upgrade and your billing date.
This shows up on your invoice as a Remaining Time charge and an Unused Time credit for the time you previously paid for the legacy plan.
If the plan or billing option you need does not appear in workspace settings, or if your invoice line items are still unclear, message us or email help@air.inc.