Pay Federal amount due with a credit card

Preparing to pay the Federal amount due at the same time as I efile.  I had planned to pay with a direct withdrawal from my checking account.  But that doesn't seem to be an option.  Therefore, I am considering paying with a credit card.

 

Just below the credit card information screen, there is a note that states,

"Must efile federal return.

$40 Return processing service fee"

 

Does that mean there is a $40 fee to pay with a credit card?

 

If so, I'd just mail a personal check for the actual amount after efiling.

 

thank you!