It has nothing to do with TurboTax, it is a new law that Congress passed. It was well publicized and was all over the news.
Beginning in 2017, if you claim the EITC or ACTC on your tax return, the IRS must hold your refund until Feb. 15. This new law requires the IRS to hold the entire refund
https://www.irs.gov/individuals/refund-timing
**Disclaimer: This post is for discussion purposes only and is NOT tax advice. The author takes no responsibility for the accuracy of any information in this post.**
