balanced budget
A budget where planned spending and saving are not more than income.
surplus
Money left over when income is more than expenses and savings.
deficit
A shortfall when expenses and savings are more than income.
fixed expense
A cost that is the same every month, like rent or a phone plan.
variable expense
A cost that changes from month to month, like groceries or outings.
irregular expense
A cost that doesn't come every month, like a yearly registration fee or birthday gifts.
emergency fund
Money saved for unexpected costs, like a car repair or a broken phone.