IRS has free tax filing services to help prepare your income tax which include tools to meet individual tax needs.

Some of the tools that  include withholding are:

• estimated amount of tax withheld on paychecks for federal tax purpose
• request tax forms
• free e-filing tax return
• online payment agreement filed electronically for a tax liability
• contact points
• tax trails to get answers to common tax questions
• tax assistance
• e-service for tax professionals who are register approved IRS partners
• confirmation within 48 hours of tax return filed online
• fast tax refund, if filed online with electronically direct deposit
• check on tax refund within 72 hours after filed online, 3 or 4 weeks if mailed