If the W-2 correct amounts that impact your tax return, then you do need to amend. If the form corrects your name, address or social security/medicare information, then there is no reason for amending.
You may start amendment and see. If the refund/tax due changes, go ahead and print and mail your amended tax return. Otherwise, there is no need.
If your return has been submitted- please wait - if it's rejected for some reason, you can change your W-2 information and re-send the return.
If your return has been submitted and accepted- you will have to amend; the return is mailed; takes about 16 weeks to process. Here are amending instructions.
