Can I get a Refund Advance before I get my 2018 filing documents?

[mesquitebean]

No, that is not the way that the Refund Advance option works.  

TurboTax will have a test program for a "Refund Advance" which may be offered to certain users who efile their returns and choose to have their refunds deposited to a Turbo Prepaid VISA Card.  The Refund Advance is a 0% loan in increments of $250 up to $1,000.   That advance is not available until after one has efiled the return and the IRS has accepted it.  You can read more at this link, but there is no way to self-select into the Refund Advance offer.   Some users will see the option show up on the screen where they choose how they want to receive their refund.

Additional terms and restrictions apply.  See this FAQ for more info:

https://ttlc.intuit.com/questions/4159588-about-the-turbo-prepaid-visa-card-and-refund-advance