Have my 2018 tax return been e filed

Once you e-file your return and IRS accepts it, then your return is on IRS timetable. There is no way of knowing exactly when IRS will finish processing your return, but you can track your refund on the IRS website. You will not see your refund expected date, on the IRS website, until after IRS approves the refund. For most taxpayers,(9 out of 10), the refund process takes approximately 21 days. 

To track your e-filed federal tax return:

1. First, check your e-file status to see if your refund was accepted by the IRS. To check your e-file status, visit this link:https://turbotax.intuit.com/tax-tools/efile-status-lookup/
2. If it has been accepted, then you would wait for the approval from the IRS.  After acceptance, you can begin tracking your refund at: https://sa.www4.irs.gov/irfof/lang/en/irfofgetstatus.jsp The refund process can take approximately 21 days.

To track your state tax return, please see this TurboTax FAQ, How do I track my state refund? https://ttlc.intuit.com/replies/3300211

 Please see these TurboTax FAQs: 

• My return got accepted. What happens next? 
• When will I get my IRS refund?