Beginning with Sage 100 ERP 2013 (fka MAS90 or MAS200) printing for W2, 941 and 1099 tax forms is hidden with Sage suggesting that you use the eFiling which is included with Sage 100 ERP 2013.
If instead of using the included Aatrix Federal and State eFiling and Reporting (which BTW works very well and allows quite nice after-the-fact edits before printing forms) you wish to print the forms the “old fashioned” way from within Sage 100 ERP 2013 – you simply need to follow these instructions to unhide the tax form printing.
New installations of Sage 100 ERP will not have the 3 menu tasks listed. To enable these tasks, from the toolbar menu click File > Run and type the utility name *unhidetaxforms.
When these menu options are unhidden, these installations will get the same warning message to say that ‘starting in 2014…no longer supported’.
Note: After the 2013 Tax Filing Year, Sage will no longer be providing W-2, 1099 and 941 form changes in the standard Sage 100 product. You will be able to use eFiling and Reporting feature, which allows you to either print W-2, 1099 and 941 forms directly to your printer and/or eFile directly to applicable tax agency through Aatrix.
via: Sage 100 ERP – 2012 Year End Frequently Asked Questions