W2 Mate imports Box 13 information. In the CSV file this field can either be 1 or 0. 1 means the check box is checked and 0 means it’s unchecked.
Please download a free demo of the software by going to the link below:
https://www.realtaxtools.com/download-w2-mate-w2-1099-print-efile-software.html
Real Business Solutions Support Team, Makers of W2 Mate, 1095 Mate and Payroll Mate
http://www.realtaxtools.com/
support@realtaxtools.com