It normally takes 24-48 hours but sometimes a little longer for an efiled return.
You should receive two emails from TurboTax for an efiled return. The first one will say that the efile was submitted and the second one will say whether it was accepted or rejected. If rejected, you must fix the reason for rejection before resubmitting it. After it is accepted, you can start tracking it on the IRS web site if you are getting a refund: https://www.irs.gov/refunds
For a mailed return the IRS does not acknowledge acceptance or rejection. All mailed returns are accepted. When they first start to process a mailed return, if you are getting a refund, you should be able to start tracking it on the IRS tracking web site: https://www.irs.gov/refunds
