Will my quickbooks online version still work if I download macOS Big Sur

Let me provide you a few information about QuickBooks Online system requirement, Maggie952.

Apple's new macOS 11 Big Sur was just released on November 12. 2020. You'll want to check on the recommended specification that QuickBooks Online supports. Please read this article for more information: System Requirements For QuickBooks Online.

On the other hand, Currently, no supported version of QuickBooks Desktop for Mac is fully compatible with this new macOS version.

You can always check out our QuickBooks Blog to see the newest and the latest updates on specific software. 

To get started, you can read this article for more of your future reference: Getting Started in QuickBooks Online.

Reply to this thread if you need further assistance. I'll be right here to help you.

I am currently running macOS Catalina version 10.15.6.  Does that mean macOS Big Sur if I update, I can still get onto my online account without any issues?

Good morning @Maggie952.

Thanks for following up on this initial response.  You're totally able to run this update, QuickBooks Online is a web-based platform and will run just fine.  I recommend keeping your browser up to date for the best results!

Should you run into anything unexpected, you might find it helpful to run this tool through your browser: https://fixit.intuit.com/.

Please let me know if you have any follow questions on this or anything else within the product. Have a great Thursday!

Thank you for this clear answer!