Both federal and state reduced your refunds? They will send you a letter if they reduced your refund. But the letters come a couple of weeks after you get the reduced refund. Did you owe back taxes or child support?
Some of your federal refund could have been used to pay your TurboTax fees, but the state refund is never used for TT fees.
How can I see my TurboTax fees?
https://ttlc.intuit.com/questions/2565973-how-do-i-review-my-fees-in-turbotax-online
MY REFUND WAS LESS THAN I EXPECTED
There can be a number of reasons why your refund was less than the amount you expected. First of all, look carefully at your actual tax returns. There is sometimes confusion about the amount of refund to expect when users misinterpret the “summary” they saw in TurboTax. The amount of your refund is on your tax return. Federal refund is on line 35a on Form 1040 State tax forms are all different so we cannot tell you what line to look at on your state form. BUT it is important to actually LOOK at your tax return forms yourself and see the amounts of your tax refunds and/or tax due. A lot of confusion would be avoided by doing that.
Be aware also that your Federal refund and state refund do NOT come together. Federal and state tax returns are processed by two completely separate entities. There is no rule as to which one will come first,
It is also possible that your state reduced your refund for debts owed in your state—if the state reduced your state refund you will receive a letter from the state.
Santa Barbara Tax Products Group, LLC (SBTPG) is the bank that handles the Refund Processing Service when you choose to have your TurboTax fees deducted from your refund. This option also has an additional charge from the bank that processes the transaction.
You can contact them SBTPG, toll-free, at 1-877-908-7228 or go to their secure website www.sbtpg.com
https://ttlc.intuit.com/questions/2580357-who-provides-the-refund-processing-service
https://ttlc.intuit.com/community/refunds/help/who-provides-pay-with-my-refund/00/26410