The license stays with you and doesn’t need a renewal, instead, we have a yearly maintenance fee (20% of license cost), billed automatically with a reminder 1 month prior to the invoice date, unless the customer wants to stop the maintenance and let us know (email, call, etc.). After the maintenance renewal, You will have access to all updates of the software during the period together with support and remote connection to your screen to solve any questions regarding the software or specific issues, as well as assistance in developing your own calculations. All new updates will be available on site sdcverifier.com.