GlobalSignIn automated billing feature makes it possible for an online registration to cater for any types of discount. As such, GSI has the possibility to automatically calculate early bird discount and group discount.
GSI checks the date when an online registration is happening, and automatically determines whether early bird discount is applicable. You can choose to have different types of early discounts (e.g. if your event is in October, then for the months of January to March you could choose to give a 15% early bird discount, and from April to May a 10% discount, etc… ) As an administrator, you have the possibility to give your registrants early bird discount even if the cut-off date has expired.
GSI can also automatically take care of group discount when there is a group registration. This is illustrated below:

As you can see, the registration fees for each person registering are shown, and could be different from each other (because of different kind of individual discounts and additional charges). Then at the end of the billing a group discount is shown.