Why can’t I pay self employed fee with tax return

[DoninGA]

The Pay with Refund option is not currently available.

[mesquitebean]

We don't know yet if "pay out of Federal refund" is temporarily unavailable due to a temporary glitch or what.   Several users have experienced that over the weekend.   Moderators may shed some light on that soon when they find out.   In any case, be aware that payment method has an additional 39.99 service fee (44.99 for California filers).   You avoid that extra fee if you pay upfront by one of the methods below:

There is no service fee if you pay by credit card or debit card.   If you don't have or don't want to use a credit/debit card, you can also pay by a prepaid debit card you can buy in a store.  A prepaid card purchased in a store may have a service fee of a few dollars from the underlying bank to register and activate.   Any card must have the Visa, MasterCard, Discover, or American Express logo.    A US billing address is required when using a card.

If the "pay out of Federal refund" option returns, you must also be sure you meet all the qualifications.  Here are some circumstances that do not allow that option:

FAQ:  Why can't I deduct my TurboTax fees from my refund?

https://ttlc.intuit.com/turbotax-support/en-us/help-article/intuit-account-billing/deduct-turbotax-f...