Good to see you here in the Community forum, @finance. I'd be glad to share insights about deleting your accountant company in QuickBooks.

Deleting your QuickBooks Online Accountant company file is unavailable. If you no longer want to use it, you can simply disregard this account.

On the other hand, you can remove accountant access in your QuickBooks Online company file. This will revoke access to your books.

Here's how:

1. Log in to QuickBooks Online as a primary admin.
2. Go to the Gear icon⚙, then select Manage Users.
3. Select the Accountants or Accounting Firms tab.
4. Find the accountant you want to remove.
5. From the Action column, select Delete.
6. Choose Delete.

Also, if you want to remove your QuickBooks Online account from the Clients list of your QBOA company, so it will no longer appear in the dashboard. You may follow the steps below:

1. Sign in to QuickBooks Online Accountant as an admin.
2. Select Clients.
3. Find the client you want to delete and select their name.
4. In the Edit client dropdown, select Delete permanently.
5. Choose Yes to confirm.

For detailed instructions about the steps I've shared above, see these articles: 

• Add accountant users in QuickBooks Online
• Manage clients in QuickBooks Online Accountant

Additionally, I'll share some articles that will guide you in reconciling your account and fixing any issues you might encounter:

• Learn the reconcile workflow in QuickBooks
• Fix issues the first time you reconcile an account in QuickBooks Online
• Fix issues at the end of a reconciliation in QuickBooks Online

If you have any questions or need clarification about deleting a QBOA company file, please feel free to leave them in the comments below. I will get back to you as soon as possible. Stay safe.