Zero-Based Budgeting
Definition
A budgeting method where every dollar of income is assigned a specific purpose — expenses, savings, or debt payment — so that income minus all allocated amounts equals zero.
Zero-based budgeting (ZBB) means giving every dollar a job before the month begins. If you earn $5,000/month, you plan exactly where all $5,000 goes — rent, groceries, savings, entertainment, debt payments — until you've assigned the last dollar. Your budget balances to zero, not because you spend everything, but because savings and investments count as "assignments."
This method forces intentionality. Instead of spending freely and saving whatever's left (which is often nothing), you decide in advance how much goes to each category. The act of planning creates awareness and control that passive budgeting approaches lack.
ZBB is particularly effective for people who feel like money "disappears" each month. By auditing every dollar before it's spent, you identify waste, cut subscriptions you forgot about, and make conscious tradeoffs. It's the budgeting equivalent of meal planning versus eating out whenever you're hungry.
The practical approach: at the beginning of each month, list all expected income. Then list all expenses in priority order — essentials first (housing, food, utilities, insurance), then debt payments, then savings goals, then discretionary spending. Keep going until every dollar is assigned.
The main criticism of zero-based budgeting is that it requires ongoing effort. Unexpected expenses, irregular income, and life changes require constant adjustment. Many people start with ZBB then transition to a simpler framework (like 50/30/20) once they've developed good spending habits.
Where this appears in Clarity
Clarity automatically tracks and calculates these concepts across your connected accounts.
Related Terms
Frequently Asked Questions
How do I handle variable income with zero-based budgeting?
Budget based on your lowest expected monthly income. When you earn more, assign the extra to savings or debt. Some people use a 'buffer' category — extra income from good months fills the buffer, which covers shortfalls in lean months.
What if I overspend in a category?
Move money from another category to cover it — this is the 'zero' in zero-based. If you overspend on groceries, reduce dining out or entertainment. The key is that the total still equals your income. Track adjustments so you can set more realistic amounts next month.
