taking this w-2 into account, do you owe or are you still due a refund? if still due a refund, I would wait. this should be something the IRS catches and it will adjust your return automatically. it's just that this may require some manual handling so it could be 6 to 9 months or longer before you hear from the IRS. if you owe I would probably file an amended return and include payment. then you can wait for the bill for penalties and interest. others may disagree about filing an amended return if you owe. you could just make a payment of what you owe (i would suggest using direct pay) the reason to use is "balance due". don't forget about the state if you have a state income tax.
