Key takeaways
For years, SharePoint storage worked like an old phone contract. You bought a bundle up front, paid for all of it whether you used it or not, and when you ran out, everything stopped until someone signed off on a bigger one. In SharePoint's case, "everything stopped" means your sites could go read-only as soon as you went over your storage quota, so nobody could save or upload anything.
PAYG storage changes how things work, in your favor. Instead of buying capacity in advance, you pay monthly for whatever sits above your quota.
For the files your teams use every day, that's a minor billing tweak. The real value shows up when you pair it with M365 Archive.
PAYG lets your tenant go beyond the storage your licenses include and bills you monthly for exactly what you use above the line.
The big change isn't the price, but the commitment. You're no longer locked into capacity you bought just in case, so the moment your storage shrinks, your bill does too.
With PAYG, Microsoft treats your tenant as always within quota.
That means you never run out of storage: there are no read-only sites and no blocked uploads, and users don’t notice a thing.
The trade-off is that quota warnings stop too, so storage keeps growing on your bill unless someone is watching it. That shouldn’t worry you, though. You can still set a budget in the admin center to get alerts as your spend grows, and with Syskit Point you can see exactly which sites and files are driving your storage, so nothing grows unnoticed.
The biggest payoff from using PAYG comes from combining it with M365 Archive.
Anything you archive costs 75% less, and with PAYG that saving lands on your next bill, not your next renewal. Archiving is also extremely low-risk:
Here’s an example of how it works:
Let’s say your tenant has a 10 TB quota and uses 11 TB. You archive 1 TB of files nobody has opened in two years.
This is what makes PAYG so powerful. With prepaid Extra File Storage, archiving only pays off once, on renewal. With PAYG, the savings show up on the very next bill.
For most commercial tenants, PAYG is the right default. However, since it changes the job from “buying storage” to “making sure we don’t spend too much”, it’s worth understanding all the details.
The obvious win is that you only pay for what you use, with no storage sitting idle because you bought it in advance. Archiving pays off immediately, a busy quarter never turns into broken workflows, and capacity grows without waiting on a purchase order.
If you already have Extra File Storage packs, they still count: they raise your quota, and PAYG covers anything above it.
Because PAYG removes the storage wall, it also removes the alarm that came with it.
Quota warnings stop, budgets send alerts rather than capping spend, and Microsoft's billing view shows how much you're spending, but not which sites or files are behind it.
Storage nobody is watching simply keeps growing on the invoice. That's why PAYG works best for tenants that know what they're storing and keep stale content out of the active tier. This is also where Syskit Point helps stay on top of your storage metrics.
Additionally, PAYG storage currently isn’t available yet for education tenants, US government (GCC) tenants, and Microsoft 365 in China (operated by 21Vianet).
Setup is a one-time job. You'll need a Global or SharePoint Administrator role, plus Owner or Contributor rights on an Azure subscription and resource group in the same tenant.
A few things are worth knowing upfront:
Microsoft 365 Archive gives you the possibility of savings. Pay-as-you-go allows you see those savings faster. Syskit Point helps you identify where savings are possible and enforce them.
Take a look at how Ovative Group used Syskit Point to clean up file versioning and saved about $24,000 in storage costs in under 60 minutes.
Syskit Point allows you to define what files you consider as stale and gives admins the option to clean them up manually. With millions of files, this can be extremely time-consuming.
In the near future, we will be rolling out stale file automation. You set up the rules, choose whether you want to include site owners in the process or notify them afterward, and Syskit Point takes care of everything automatically.
Paired with PAYG, your active storage stays lean on its own and your bill keeps reflecting only the content people actually use. No cleanup projects, and no one having to remember to run them.
With M365 Archive and pay-as-you-go, you stop paying for capacity you bought “just in case”. If you're getting started, the order is simple:
SharePoint PAYG is currently in public preview and is planned to reach general availability in November 2026.