Setting a wedding budget is a difficult task. The largest and most expensive party you've ever thrown will probably be your wedding. To create a budget, you must add up your funds, keep a thorough spreadsheet to ensure that you don't go over during the planning process, be ready for unforeseen expenses, and be prepared to make significant concessions if you do go over your overall budget. Although it's challenging, putting in the time and effort now will ensure that you have a happily ever after.