I want to change a vendor to a bank account, can this be done?

Welcome and thank you for posting here in the Community page, @forbygrace66.

If you're referring to changing a vendor to a bank account in QuickBooks Online (QBO). We don't have the option to change a vendor to bank account, however, you can make the vendor inactive and create a new account.

To make a vendor inactive:

1. Go to Expense at the left pane.
2. Select Vendors.
3. Select a specific vendor.
4. Click Edit beside New transaction.
5. Click on Make inactive beside Cancel.
6. Click Yes for the confirmation.

To create a new account:

1. Go to the Gear icon.
2. Select Chart of Accounts under Your Company.
3. Select New.
4. In the Account Type drop-down, select the account type.
5. In the Detail Type drop-down, select the type of account you want to create.
6. If more than one choice appears in the Detail Type field, select the type of account you want to create.
7. Enter a name for the account under the Name field.
8. (Optional) Enter a brief description of the account in the Description field.
9. (Optional) Enter an opening balance for the account in the Balance field (not available for all account types), enter an opening balance for the account. Then in the as of field, enter the date of the balance.
10. Select Save and Close (or Save and New if you want to enter another account right away).

For additional reference, you may check this article: Create a new parent account or sub-account.

Feel free to add a comment below or click the Reply button if you're referring to something else. Have a good one!