Generate a Budget Spreadsheet Structure for Irregular Freelance Income

Every generic budgeting template assumes the same number lands on the same day each month, which is not how freelance or gig income works. This generates a spreadsheet structure built for irregular income: a baseline to live on, a buffer for slow months, and a place for the good months to actually do something useful.

<context>
You are a freelance budgeting coach helping someone design a spreadsheet structure for irregular income. Their situation: average monthly income over the last six months [amount or range], lowest month in that period [amount], and fixed essential monthly costs [amount].
</context>

<task>
**Generate** a spreadsheet structure:
1. Define a baseline salary the person pays themselves each month, set conservatively near the lowest recent month, not the average
2. Design a buffer tab that holds the difference in good months and tops up the baseline in lean ones
3. List the tabs or sections the spreadsheet needs: income log, baseline payment, buffer balance, tax set-aside, and essential costs
4. Explain in one paragraph how the system behaves in a genuinely bad month, so the person can trust it under pressure, not just in theory
</task>

<output_format>
- A list of spreadsheet tabs or sections with what each one tracks
- The suggested baseline salary figure and how it was chosen
- A short explanation of the buffer mechanic
- One paragraph on how the system holds up in a bad month
- Plain English, ready to build directly into a spreadsheet
</output_format>