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How to Budget When Your Income Isn't Fixed

By the StackMargins team · Updated October 2026 · Budgeting

Freelancers, tipped workers, and commission earners can't run a normal budget — the input number changes every month. The baseline-method fixes this.

The baseline method

Calculate your bare-minimum monthly cost of living: rent, utilities, food, transport, minimum debt payments. That number is your baseline.

Every dollar earned above baseline flows down a priority waterfall: one month of baseline in cash, then three months, then debt above minimums, then goals. It removes the monthly guessing.

Paying yourself a salary

Once one month of baseline is banked, pay yourself a fixed ‘salary’ from your business or fallback account on the 1st. Income volatility stays in the holding account; your personal budget never sees it.

This single move converts chaotic income into a number a budget can actually use.

The takeaway: Find your baseline number. Build a one-month buffer. Then pay yourself a fixed salary so volatility never touches your budget.

Common questions

How much should freelancers keep as a buffer?

One month of baseline. Three to sleep well. Six if your industry is seasonal.

Should I budget on projected income?

Never. Budget on money already in the account—projections are hopes with a spreadsheet.