Paying for what again? How much? The Tax Due or the Turbo Tax fees? Did you maybe buy the Desktop program but ended up using the Online version? Or had to upgrade to a higher version or added a state return or some other service?
How to review your fees in the Online version
https://ttlc.intuit.com/community/charges-and-fees/help/how-do-i-review-my-fees-in-turbotax-online/0...
