About the Zero-Based Budget Calculator
Give every dollar a job: assign income to categories until income minus allocations equals zero.
Also known as: zero based budgeting, every dollar budget, zbb calculator.
How to use this calculator
- Enter monthly income, allocations.
- The result updates instantly as you type — press Calculate (or Enter) at any time.
- Review the breakdown shown under the main result.
- Use Copy result or Share to save the answer or send a link with your inputs.
Formula
Income − Σ allocations = 0
Worked example
Using the values pre-filled in the calculator above:
- Monthly income = 4,200
- Allocations: 1300, 500, 250, 200, 400, 300, 600
the calculator returns:
- Still to assign: 650
- Assigned: 3,550