I am amending my 2016taxes so my parents can add me under their health insurance. How long will it take before they can add me?

[Texas Roger · Accepted solution]

They can add you immediately but they will have to print and mail their return to get it accepted. 

[Texas Roger]

Your amended return form 1040X must be printed and mailed to the IRS. It can't be efiled.

[Hal_Al]

Likewise, you parents can not longer e-file; they must  file by snail mail.