I mailed my federal taxes, but forgot to attach W-2's. What should I do?

[jmoffat03]

If I mailed the tax forms already, but forgot to send W-2's, should I wait until the IRS contacts me?  I also have the option to e-file as well, but I've already mailed forms.

[Rachel_W · Accepted solution]

Yes, you should wait until the IRS contacts you before you send in the W2's that you forgot to attach.

DO NOT e-file your return if you have already mailed it as this will just cause confusion at the IRS and could delay your refund.