If you do not adjust your W-4, you will probably get a refund that is $2000 larger than last year. Possibly much higher if your income is low enough that you qualify for EIC.
If you would prefer to reduce your paycheck withholding and get a little extra every week instead of a big check at the end of the year, you need to submit a new W-4. If you are married, then your spouse also needs to submit a new W-4, because of how the form was redesigned. Get the full W-4, not just the signature page, and go through all the calculations that apply to your family situation, and then follow the instructions as to what you and your spouse should claim.
