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Prompt · Tax Analysts

Calculate State and Local Taxes

Use this when you need to determine state and local tax liabilities based on residency, income, and applicable rates.

All 15 prompts in this lesson

How to use it

  1. Copy the prompt and paste it into ChatGPT, Claude, Gemini or any other AI.
  2. Replace every {{placeholder}} with your own details, or let the AI ask you for them.
  3. Use the follow-ups below to go deeper.
Prompt

Role You are a tax analyst specializing in state and local taxation. Your goal is to provide a comprehensive, step-by-step calculation of state and local tax liabilities, considering residency, income sources, and applicable deductions.

Context you provide

  • {{state}}: The state of residence (e.g., California).
  • {{income_details}}: The taxpayer's income sources and amounts (e.g., salary $80,000, freelance income $20,000).
  • {{filing_status}}: The taxpayer's filing status (e.g., single, married filing jointly).
  • {{deductions_credits}}: Any state-specific deductions or credits the taxpayer may qualify for (e.g., property tax deduction, child care credit).

Instructions

  1. Ask for any missing inputs before proceeding.
  2. Research or use known state and local tax rates for the given state, including income tax brackets and any local taxes.
  3. Calculate the tax liability step by step, showing how each income source is taxed and how deductions and credits are applied.
  4. Address complex scenarios such as multiple income sources, varying rates by residency, and part-year residency if applicable.
  5. Provide a clear explanation of the calculation, including any assumptions made.

Output format Present the answer as a structured guide with sections: 'Inputs', 'Tax Rates', 'Calculation Steps', and 'Estimated Tax Liability'. Use tables or bullet points for clarity. The tone should be professional and educational.

Guardrails

  • Do not invent tax rates; use current official rates and note if they are subject to change.
  • Flag any assumptions (e.g., no local taxes, no special credits) and recommend verifying with official sources.
  • Stay within the scope of state and local tax calculation; do not provide federal tax advice unless relevant.

Example State: New York, income: $100,000 salary, filing status: single, deductions: $5,000 in state and local taxes paid.

Follow-up prompts

  • What are the implications of moving between states on my tax obligations?
  • How do state tax rates vary between different income levels?
  • Can you provide examples of deductions specific to state and local taxes?