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Tax tips for 1099 workers

11 tax rules every 1099 worker should know.

Plain-English notes for Schedule C workers. Current for tax year 2025 (filed by April 15, 2026, or by October 15 if you extended) and tax year 2026. Each tip cites the rule behind it.

Tax-year notes · 2025 and 2026

Note. General information, not tax advice. Tips reflect federal law and California rules where noted, current as of May 2026. For advice specific to your situation, consult a licensed CPA or Enrolled Agent. Sourdough Tax, Inc. is not your tax advisor unless we have explicitly accepted that engagement in writing.