Our standard license fee covers a perpetual license to use the software. However, you will not be able to upgrade to future versions of GAMS if your installation is not under maintenance and support.
Maintenance and support (M&S) is free during the first year after the purchase of the software.
Maintenance and support includes:
Up to four changes per year of the name on a user-based license are included.
If the user does not purchase M&S for some period and chooses to purchase it at a later date, we will charge the prevailing annual maintenance and support fees for the periods that were not covered.