Traditional IRA contribution not changing my refund amount

Thank you for your help in advance 🙂

 

So turbotax is telling me that I can get an additional $600 on my refund if I put $3000 in my traditional IRA. I thought that this would be great and told the program that I would. I'm assuming it has to be the traditional and not my Roth.

 

After entering info in turbotax I noticed that my refund did not increase by $600. Anyone have an idea if that refund is reflected immediately in turbotax? I'm also wondering how they verify my deposit? Just a bit confused about this. Thank you!