Thank you for visiting again the QuickBooks Community. I'll be sharing details about the availability of FAM. Then, the alternative way so you can use this kind of feature.
Yes, Fixed Asset Manager (FAM) is a feature that is available only in QuickBooks Desktop Premier Accountant, Enterprise, and Enterprise Accountant that computes depreciation of fixed assets based on the standards published by IRS. You can click this article to see further details and how it works: Manage fixed assets using Fixed Asset Manager (FAM).
However, QuickBooks Online can integrate with hundreds of apps. That said, you can look at a third-party app outside the system that can help you calculates the depreciation of fixed assets. Then, contact their support to ensure that you're able to connect the two different software.
You may need an additional app to integrate with your QBO. It will monitor new fixed asset additions automatically. Depreciation will be calculated and journals automatically entered to your QBO account at the end of every month. It’s only necessary to log back in and check the asset register as part of the annual review or if assets need to be marked as disposed.
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