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How to Budget on Irregular Income: The Baseline Month Method

By Smart Budget Sheets November 9, 2026
Budget from a low-but-realistic baseline month, send the surplus to a buffer, and pay yourself a steady salary.

If your pay changes every month (freelance, gig work, commission, seasonal jobs), a normal monthly budget breaks in the first slow month. The fix is to budget from a baseline instead of an average.

1. Find your baseline month

Look at the last 6-12 months of income and pick a low but realistic month. Not the worst outlier, but a month you could plausibly see again. That number is your baseline. Everything in the budget has to fit inside it.

2. Cover fixed costs first

Rent, utilities, insurance, minimum debt payments, groceries. If these don’t fit inside the baseline, that’s the most important thing to know, and it’s much better to learn it on paper than in a slow month.

3. Send everything above the baseline to a buffer

Every month that beats the baseline, the extra goes to a separate buffer account. In a slow month, you top up from the buffer to reach the baseline. A common target is 1-3 months of baseline expenses.

4. Pay yourself a “salary”

Once the buffer is full, move the same amount from the buffer to your spending account on the same day each month. Your bills now see a steady income, even though your clients don’t pay steadily.

5. Set taxes aside per payment

If no one withholds tax for you, move a fixed percentage of every payment into a tax account the day it arrives. Check the right rate for your country and situation.

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General information, not personal financial advice.

#budgeting #personalfinance #freelance
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