What you can do next
If you're nearing December 31 and you're not sure where you stand tax-wise, use the IRS's Withholding Calculator Opens in new window to see if you're getting enough withheld from your paychecks. If you're short, use your last couple of paychecks to put more toward your taxes — or adjust your withholding for the future and start setting aside money in January toward your April tax bill. If you're owed a refund, file early and select to receive your refund via direct deposit; you'll get your taxes out of the way and won't have to worry about filing deadlines.
Please consult your tax and legal advisors for advice pertaining to your particular circumstances.