Include all variable expenses now, car maintenance, electricity, heating, these can vary throughout the year you need to calculate them and come up with an average monthly amount. None essential expenses like eating out coffee at Starbucks, weekend getaways, extravagant vacations, fancy clothing, motorcycles, ATV's, if you use them, write them down, realize these are wants, not needs. Now total these all up, fixed expenses, variable expenses, and non_essential expenses,there you now have your total expenses.
The key to the budgeting is compromise. The bride will usually prefer all the best accessories and dresses where as the groom will be more financially conscious of the whole process. So, they need to meet somewhere in between to accomplish what they both want. A good rule of thumb is to comprise on quantity not quality. The quality of the wedding is what will be remembered by all. It is very possible to have a beautiful classy wedding on a tight budget, just be careful of how many guests are inviting. Having a budgeting sheet is helpful, so you may want to divide the sheet in categories such as the ones below.