How do I delete a payroll tax payment that I just made with the new format? I don't see a drop-down to select "delete" like before?

It looks like you've upgraded to the Full Service payroll, Hosseinakbari.

You're unable to delete the payroll taxes on your end. I suggest reaching out to our payroll support. An agent can make the changes for you. Here's how:

1. Click Help inside QuickBooks Online.
2. Select Talk to a human.
3. Enter "Delete payroll tax payment" in the Type something field.
4. Click I still need a human.
5. Select Contact us.
6. Choose between Chat or Callback. 

Let me also add the list of articles for Full Service Payroll as a future reference: QuickBooks Online Payroll Full Service Hub.

Feel free to visit us if you have other payroll concerns. We're available 24/7 to help you. Take care!