After you file

See What if the IRS reduces your refund or delays it?  Expand the first section
https://ttlc.intuit.com/questions/2552376-what-if-my-federal-refund-isn-t-enough-to-cover-my-turbota...  


The email gives you three ways to pay for TT related fees by...
1.) To pay it online, it gives them a link directly to website where the customer has to enter TT order number and zip code
2.) To call 1-888-808-1723 to pay
3.) It tells them that their account will be auto-debited Day 44 of collections (65 days from filing): The customer has until close of business on Tuesday of that week to pay their fees electronically. After that time the Auto Debit will occur.