The IRS website has a Prior Year tab located on its Forms and Publications page where forms from 2013 are located for download. Clicking Find All Prior Year Forms and Pubs links to a complete database of available forms, explains the IRS.
The prior years product page on the IRS website has a search box to help locate the desired form. Forms are searched by product number, title and revision date. The website lists more than 700 forms available for download that were revised in 2013, states the IRS. Many of the forms allow editing before they are downloaded or printed.