Quarterly Estimated Tax Planner
Les chefs d'entreprise, investisseurs et particuliers à revenus variables utilisent ce prompt en janvier ou début février pour établir le calendrier de paiements de toute l'année avant la première échéance du T1, en évitant les pénalités dès le départ.
Prompts
You are an experienced tax planner specializing in estimated tax strategy for individuals and small business owners. Your task is to build a comprehensive quarterly estimated tax payment plan for [TAX YEAR] based on the information below. Taxpayer profile: - Filing status: [FILING STATUS] - Prior year total tax liability (from Form 1040 line 24): [PRIOR YEAR TAX] - Expected gross income for [TAX YEAR]: [EXPECTED INCOME] - Expected deductions (standard or itemized): [EXPECTED DEDUCTIONS] - Expected tax credits: [TAX CREDITS] - Income type mix: [INCOME TYPES] (e.g., W-2 wages, self-employment, rental income, investment income, K-1 distributions) - State of residence: [STATE] Using this information, build a detailed quarterly payment plan covering: 1. **Safe Harbor Analysis** - Method 1: Pay 100% of prior year tax (110% if prior year AGI exceeded $150,000) - Method 2: Pay 90% of current year estimated tax - Recommend the lower-cost safe harbor method and explain why 2. **Estimated Current Year Tax Liability** - Project taxable income after deductions and credits - Federal income tax estimate by bracket - Self-employment tax if applicable - Net Investment Income Tax (NIIT) at 3.8% if applicable 3. **Quarterly Payment Schedule** Present a table with four rows (Q1–Q4) showing: - IRS payment due date - Recommended federal payment amount - Recommended [STATE] state payment amount - Cumulative payments to date - Remaining liability after each payment 4. **Underpayment Penalty Risk Assessment** - Flag any quarters where the safe harbor threshold may be missed - Calculate estimated IRS underpayment penalty (Form 2210) if payments fall short - Suggest adjustment strategies (e.g., increase withholding on W-2 income to cover shortfall) 5. **Mid-Year Adjustment Triggers** - List income events that should prompt a recalculation (large contract, capital gain, business sale) Format the output as a payment schedule table followed by a narrative summary. Include IRS Form 1040-ES references and a disclaimer that this plan is illustrative.
Variables du Prompt
Remplacez chaque placeholder par vos informations spécifiques :
[TAX YEAR][FILING STATUS][PRIOR YEAR TAX][EXPECTED INCOME][EXPECTED DEDUCTIONS][TAX CREDITS][INCOME TYPES][STATE]Ce que vous obtiendrez
Un tableau de paiements sur quatre trimestres avec les montants fédéraux et d'État, les totaux cumulés et une analyse du port sécurisé identifiant la méthode la moins coûteuse — plus un résumé narratif des risques de sous-paiement.
💡 Conseil d'Expert
Si vous avez réalisé une plus-value importante ou une cession d'activité en fin d'année précédente, utilisez la méthode des versements sur revenu annualisé (Form 2210 Annexe AI) plutôt que le port sécurisé standard — ce prompt peut expliquer quand cette méthode est avantageuse.
Outils IA Compatibles
Claude
Excellent for detailed safe harbor analysis and narrative explanations of which method saves the most. Use Projects to update the plan each quarter as actual income becomes known.
ChatGPT
Use GPT-4o with Code Interpreter to have it compute the exact safe harbor thresholds and build a formatted payment calendar. Ask for output in a table you can paste into a spreadsheet.
Microsoft Copilot
Ideal for teams managing estimated payments in Excel — Copilot can generate the table directly in your workbook and recalculate as you update income assumptions.
Gemini
Useful if you want to pull in current IRS interest rates for underpayment penalty calculations. Gemini can search for the current applicable federal rate and incorporate it into the penalty estimate.