Why does my 15 year old have to mail in his return instead of e-file?

[xmasbaby0]

I think the rule is if they are younger than 16 the return has to be filed by mail.   

When you mail a tax return, you need to attach any documents showing tax withheld, such as your W-2’s or any 1099’s.  Use a mailing service that will track it, such as UPS or certified mail so you will know the IRS/state received the return.

Federal and state returns must be in separate envelopes and they are mailed to different addresses.  Read the mailing instructions that print with your tax return carefully so you mail them to the right addresses.

[Critter-3]

If this is his first return then mailing will be the only option.

[fanfare]

good experience for your kid since High School ain't gonna be any help.