How can i verify that the the federal taxes I paid at checkout have been sent to IRS?

If you chose to have them withdraw from your bank account, generally the funds are withdrawn on the payment date you specified if your return has been accepted. If you still don't see the debit 7-10 days after your return has been accepted and your specified date, you will need to call the IRS e-file Payment Services at 1-888-353-4537, if this is a federal tax payment you owe. If you didn't specify a date, then April 15th is the default payment date.

You can use the steps below to check your tax payment information:

1. Log into your account and click on My TurboTax (or Taxes) at the top 

2. If the drop down appears, choose My Tax Timeline (if it doesn’t appear when you click, it may have taken you directly to the page once you clicked My TurboTax).

3. Scroll down to section Some Things You Can Do 

4. Click on Download all forms and worksheets

On the return, Part V of the Federal Information Worksheet will have your auto debit date and bank account info

And Part VI on the State Information Worksheet will have your state auto debit date and bank account info for that payment

Or to contact your state tax agency, if you owe a state payment. You can go here https://ttlc.intuit.com/questions/1901670and choose your state and it will take you to their contact page with phone numbers to reach them. 

When will my tax payment go through?

https://ttlc.intuit.com/replies/3299924