I’m here to assist you with removing your checking account in QuickBooks. If the checking account is tied to online banking, we’ll need to disconnect it first. I recommend consulting with your accountant to confirm that this modification is appropriate for you.
Select the Banking tab from the Banking menu.
Select the account you wish to remove, then click the Edit icon next to it.
Choose Edit account information.
Select Disconnect this account on save in the Account window.
Save and close the window.
Here’s how to remove your account whenever you’re ready:
Select the Chart of Accounts option from the Gear icon.
Locate the checking account you’d like to close.
Make inactive by selecting Make inactive from the Action drop-down menu.
Also you can check it out AccounttsPro guide Delete QuickBooks Account in simple steps