Common forms available on the Internal Revenue Service website as of 2015 include Form 1040 United States Individual Income Tax Return, Form W-9 Request for Taxpayer Identification Number and Certification, Form W-4 Employee's Withholding Allowance Certificate and Form 2848 Power of Attorney and Declaration of Representation, notes the IRS. Forms for businesses are Form 941 Employer's Quarterly Federal Tax Return, Form W-4 Employee's Withholding Allowance Certificate and Form W-2 Wage and Tax Statement. Common publications on the site are Publication 17 Your Federal Income Tax for Individuals and Publication 15 Circular E, Employer's Tax Guide.
The IRS website offers forms and publications in PDF format from the current year and prior year. Other common publications include Publication 334 Tax Guide for Small Business, Publication 502 Medical and Dental Expenses, Publication 525 Taxable and Nontaxable Income and Publication 554 Tax Guide for Seniors. The site also features a search tool to help users find the necessary documents, states the IRS.