After you file

What report?  You mean your tax return?  You have to pay the Tax Due when you file your tax return.  Actually any tax due was due by April 15 even if you filed the return late.  You don't wait for them to mail you a bill.  You either put down your bank account info for the IRS to pull it out of your account or you can pay it by credit card or you can mail a check.  Check the instruction sheet on how  you selected to pay.  Maybe you entered your bank info wrong and the IRS couldn't take it out of your account.

 

You can pay online at https://www.irs.gov/payments

 

How to pay the IRS in Turbo Tax  https://ttlc.intuit.com/community/tax-payments/help/how-can-i-pay-my-federal-taxes/00/26212