IMHO, it’s also worth figuring out how much you spend on expenses that may not recurring on a weekly or monthly basis, but which you can almost always expect to make a dent on your finances.
These include:
1. Vacations—Figure out how much you spent on your last one and allocate funds for your next one)
2. Celebrations—wedding anniversaries, birthdays, halloween parties
3. Gifts—how much did you spend on birthday presents, wedding gifts, and Christmas presents last year?
4. School-related expenses—field trips, school projects, etc.