There are many ways to budget and it's important to find the one that works best for your organization. Traditionally, the event budget lives in an Excel sheet manually updated and cobbled together from invoices from vendors. It is prone to error and often not as up to date as it should be. While Excel can get the job done, there is an easier way. Event management software exists that makes it easier to manage your event budget. Whatever tool you use, you'll need to have it in place from the start. Consistency is key.