Depending on your company's program policy, subsidies in various benefits accounts may roll over for up to a certain period and may have a cap.
Renewal, rollover, and expiration are automatically calculated in your Twic account and you may find the relevant dates in your Twic Wallet. Simply click on the wallet icon in the top right hand corner of your account to find this information.
For details, please refer to the policy listed in your account. The program policy may also be found on your company's benefits wiki or by reaching out to your benefits team directly.