What about allowing you to set up an “alert” as part of an entry that could be passed to GCalendar? That alert could include a link back to CalBudget and a description. It wouldn’t be intended to display the current balance, but rather serve as a reminder that certain bills/income are due soon. It would bring people back here regularly to deal with the events regularly. it would be really cool to be able to log in directly(no email/passwd, just straight to the calbudget page) from the event link, but I’m not sure if that can be secured well. maybe just password? And this should be a paid version only option.
*edit:add paid version only*