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When you make changes to your Air subscription mid-cycle—like changing plans, updating your billing cadence where that option is available, or working with Air on a contract or add-on change—you may notice a higher-than-expected invoice. This can reflect prorated charges, credits for unused time on a previous plan, or a support-assisted subscription adjustment, depending on your plan and the options available in workspace settings.
Prorated billing applies when eligible subscription changes are made during an active billing cycle. These changes usually include plan upgrades or downgrades, billing cadence changes when self-serve options are available, and certain contract or add-on adjustments completed with Air.
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:
Upgrading or downgrading your plan
Changing your billing cadence when that option is available in workspace settings
Qualifying contract, add-on, or support-assisted billing changes
You'll only be charged for the time the plan or billing change 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.
Monthly plan credits refresh on your billing cycle and do not roll over, but that reset is separate from any prorated invoice adjustment.
When charges appear
Some subscription changes take effect immediately and are reflected through proration, such as eligible plan changes or billing 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. Enterprise storage changes, contract changes, and other options not shown in settings are typically coordinated with Air directly, even if the resulting billing adjustment later appears on an invoice. If you do not see the plan or billing option you need, contact Air for help instead of expecting a self-serve change.
📦 Storage and credit usage
On Air's credit-based plans, storage is not managed as a separate included TB allowance. Instead, storage and AI enrichment draw from your workspace’s monthly credit balance continuously.
Basic storage uses 1 credit per GB per month.
AI enrichment uses 5 additional credits per GB per month for enriched assets.
Deleting assets mid-cycle returns credits because storage and enrichment are recalculated continuously.
You can view your credit balance and usage breakdown from the credit meter in the navigation bar. The meter shows how credits are being used for storage, enrichment, and AI generation, along with the next refresh date.
To avoid unexpected charges or usage limits, monitor your workspace credit usage regularly and remove unneeded files when appropriate.
Check your renewal invoice for line items that reference the following:
Your plan – Your monthly or annual subscription charge for the current plan tier
Remaining Time – A prorated fee for time on the updated plan, add-on, or billing arrangement
Unused Time – A credit for the unused portion of your previous plan or billing arrangement
📌 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 move from one paid plan to a higher paid plan.
Your next full charge for the updated plan happens on the 8th of the next month.
Because your renewal date stays the same, your invoice can also include a prorated Remaining Time charge for the days on the updated plan and an Unused Time credit for the unused portion of your previous plan.
This shows up on your invoice as a Remaining Time charge and an Unused Time credit based on the time covered by each plan during that billing cycle.
Contact Air if your invoice line items are unclear, if you need a storage or contract change that is not available in workspace settings, or if you want help understanding which subscription changes are self-serve versus support-assisted. Message us or email help@air.inc.