I have a limited set of fixed assets, and want to track expenses associated with them. Should I use sub-accounts (by asset) under maintenance and repair, or use "name"?

You can create sub-accounts of any main or parent account, Tarhoo. 

Having said that, the sub-account should be under the parent fixed asset account. Here's how to create it:

1. Click Accounting.
2. Go to the Chart of Accounts tab.
3. Click New.
4. Select the Account Type and Detail Type.
5. Enter a desired name.
6. Tick the Is sub-account box, then select the fixed asset account.
7. Click Save and Close.

I'll include the article on how to create subaccounts in your chart of accounts in QuickBooks Online for more information. 

Reach out to us if you have other concerns. We'd be happy to work with you again. 

@tarhoo 

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No, costs to maintain a fixed asset is just an expense, you do not add those costs to the fixed asset item.  Creating a sub account would add those costs.

So, is there a way to track the expense, and somehow "link" it to the fixed asset, so you can track the expenses related to the asset like maintenance, interest payments etc.

Thanks

Reading these replies does not help.  A lot of reply's are not correct.  Then when someone replies that it is not correct no one answers the original question??