Budget Builder tracks two calculations for your race budget and presents them side-by-side:
Registered: a calculation based on the number of participants that have already registered for your race.
Projected: a calculation based on the numbers of participants you project for race day.
The Registered calculation shows you a snapshot of your budget at it stands today, and can help you understand how your event economics look at the current stage of the registration cycle.
The Projected calculation shows you the budget as it will look like on race day, assuming you hit your projected number of participants.
Contrasting the Registered and Projected calculations can help you track how well you are doing on your race financials as you approach race day.