Should my South Carolina tax due withdrawal date be before 5/1/19? E-file was set-up with one of your advisors - I don't want to get fined if it needs to be sent today.

[TomK]

You have until May 1, 2019 to file  and pay any balance due if you use  an online filing method (in South Carolina)! 

This does not apply to federal returns  or returns submitted on paper.

2018 South Carolina Individual Income Tax: https://dor.sc.gov/forms-site/Forms/IITPacket_2018.pdf