is my Publisher version perpetual?

Yes. Based on the information shown, Microsoft Publisher 2021 is the last standalone one-time-purchase version of Publisher, which is a perpetual version rather than a Microsoft 365 subscription version.

Supporting points from the available Microsoft information:

• Publisher 2021 was available as a one-time purchase perpetual license.
• Microsoft 365 is the subscription offering; one-time purchases are the perpetual Office/Publisher products.
• Microsoft states that if there is a perpetual version of Publisher, it can still be installed and used beyond October 2026, although support ends in October 2026.
• Publisher is not included in Office 2024, and Publisher 2021 is identified as the last standalone version.

What that means for the installation shown:

• If the app says Microsoft Publisher 2021 and there is no active Microsoft 365 subscription, that matches a perpetual purchase.
• It should continue to run after support ends, but it will no longer be supported after October 2026.

A practical distinction:

• Perpetual = one-time purchase, no recurring subscription required.
• Supported = still receives support/servicing only until the published end-of-support date.

References:

• Microsoft Publisher will no longer be supported after October 2026
• Office 2024 and Office LTSC 2024 FAQ
• Office 2021 and Office LTSC for Windows and Mac FAQ
• Microsoft Publisher - Microsoft Q&A I have read, in the past, that I could purchase a perpetual version of Publisher and continue to work on my existing files. Is this true? I can't seem to find where I would do that.