Create a year-end tax planning checklist for {{target_audience}} in the {{industry}} industry. Write in a {{tone}} tone. The checklist should help identify and execute tax-saving actions before the year-end deadline ({{goal}}). Format as an actionable checklist with checkboxes, grouped under: October Actions, November Actions, December Actions, Industry-Specific Strategies, Investment Portfolio Tax Review, Documentation Checklist, and Post Year-End (January). Include a 1-2 sentence explanation for each item. Keep under 1200 words. Use plain language. If uncertain, say 'CONSULT A TAX PROFESSIONAL'. Paste any relevant background information after these instructions before running.