The IRS website has free detailed instructions for using the 1040EZ tax table. These instructions can be viewed on the Forms & Publications page of the IRS website. Taxpayers who need further help can call the IRS customer service line or visit a sponsored Taxpayer Assistance Center in their area.
As of 2015, the IRS help line is 1-800-829-3676. Operators are available to answer questions about the 1040EZ tax table or other forms and publications. For in-person assistance, taxpayers can call 1-800-906-9887 to find volunteers in their local areas. Listings of volunteer events are also often available in community newspapers.