Zero-based budgeting
Assigning every dollar of income a job until nothing is left unassigned.
Zero-based budgeting means giving every dollar of your income a specific job — spending, saving or debt — until the amount left unassigned reaches zero. The zero is not money left in your account at the end of the period; it is money left undecided at the start. The method forces the decision forward, so income arrives already allocated rather than waiting to be spent.
Worked example
You are paid $2,400 a fortnight. Rent takes $900, groceries $400, transport $180, bills $220, eating out $150 and debt $250 — that is $2,100 assigned, leaving $300 undecided. Under zero-based budgeting you do not stop there: the last $300 goes somewhere too, say $200 to a car-service fund and $100 to a holiday goal. Now the unassigned figure is zero.
Common mistake
Thinking a zero-based budget means spending everything, or that a leftover balance means you did it wrong. Assigning $300 to savings is a job like any other — the target is zero unassigned, not zero in the bank.
Questions about this term
Zero-based budgeting: common questions
- Does zero-based budgeting mean I have to spend all my income?
- No — the zero is money left undecided at the start of the period, not money left in your account at the end. Assigning $300 to savings is a job like any other. The target is zero unassigned, not zero in the bank.
- What do I do with the money left over after my bills are assigned?
- Give it a job too. Paid $2,400 a fortnight with $2,100 assigned to rent, groceries, transport, bills, eating out and debt, the last $300 does not sit undecided — say $200 to a car-service fund and $100 to a holiday goal. Now the unassigned figure is zero.
- Is a leftover balance a sign I did zero-based budgeting wrong?
- No — a balance that was deliberately assigned to saving is the method working. The only thing zero-based budgeting rules out is income arriving without a decision attached. Money you chose to hold is allocated; money you forgot about is not.
- Can I run a zero-based budget with 2Fin?
- Yes — the assigning step is what budget allocations do. You set an amount per category for the period before the money is spent, which is the decision zero-based budgeting pushes to the front. What Fin adds is the tracking against those amounts as the period runs.
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