What is zero-based budgeting?

Zero-based budgeting assigns every dollar of income a specific purpose so income minus expenses equals zero. Every spending category is justified from scratch each month, reducing waste and increasing intentionality.

Zero-Based Budget Calculator

Allocate monthly income into planned budget buckets.

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Monthly net income ($)

Needs (%)

Wants (%)

Savings / debt (%)

About This Calculator

In zero-based budgeting, every dollar of income is assigned a purpose — expenses, savings, debt payoff — until income minus allocations equals zero. Unlike the 50/30/20 rule, it's fully customizable to your actual spending categories and forces deliberate decisions about every dollar.

Estimates only — not financial, tax, legal, or investment advice. Verify important results with a qualified professional before making decisions.

needs = income × needs%; wants = income × wants%; savings = income × savings%; must sum to 100%