Proper planning of the guests to be invited and limiting them would save you a lot. It costs on an average about $200 per guest thus shortening the guest list is a key to a budget wedding. Limit by inviting friends whom both you and your fiance are acquainted with. Invite coworkers only if you hang out with them outside office as well. Have a check on the approximate number of guests even before finalizing a venue. The general rule is to have a space of 25 to 30 square feet per guest. This space will include tables, bands, attendants, etc.