budget
A plan for how money will come in (income) and go out (expenses and savings) over a period of time.
fixed expense
A cost that stays the same each period, such as a phone plan or rent.
variable expense
A cost that changes, such as food or entertainment.
one-time (irregular) expense
A cost that happens once or a few times a year, such as tuition, a laptop or tools.
surplus / deficit
A surplus is income left over after expenses; a deficit is a shortfall when expenses are more than income.
cash flow
When money actually comes in and goes out, month by month.
tuition and ancillary fees
Tuition pays for instruction; ancillary fees pay for services such as athletics, health services and student associations.
in-kind support
Help that is not cash, such as living at home or a family member paying the phone bill.