The cost of upgrading a workspace (and of paying for subsequent months/years of a premium Airtable plan) is affected by the permission levels of your collaborators.

When calculating your bill, the following people do count toward the number of users in your workspace (and will therefore increase your per-month or per-year charge):

• Workspace owners
• Workspace collaborators at the creator level
• Workspace collaborators at the editor level
• Workspace collaborators at the commenter level
• Base collaborators at the creator level with access to at least one base in the workspace in question
• Base collaborators at the editor level with access to at least one base in the workspace in question
• Base collaborators at the commenter level with access to at least one base in the workspace in question

However, on your workspace's Plus or Pro plan neither of the following types of collaborators will count toward the number of users in your workspace (and therefore, neither will increase your per-month or per-year charge):

• Read only workspace collaborators
• Read only base collaborators
• Workspace or base collaborators at any level that have been invited to create an Airtable account, but who have not yet accepted the invitation

If you have more questions about how billing works, please refer to our billing and workspace administration articles.

Please note that for Airtable Enterprise plans, billing is calculated differently. Please contact your sales representative if you have further questions.