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Build a Tax Bracket Calculator with AI

Comprehensive income tax calculator showing federal bracket breakdowns, marginal vs effective tax rates, standard vs itemized deduction comparison, and estimated take-home pay. Supports all filing statuses with clear visualizations of how each dollar is taxed.

Build Prompt

Copy this prompt into Claude Code

Build a static HTML tax bracket calculator. Dark theme with background #0a0a0f, surfaces #12121a, borders #1a1a2a, accent color #059669 (emerald). Data from inline `const FEDERAL_BRACKETS = [...]`, `const STATE_TAXES = [...]`, `const DEDUCTIONS = [...]`. Federal brackets for 2025: array per filing status (Single/MFJ/MFS/HoH) with {min, max, rate}. State taxes: flat rates and bracket states for all 50 states. Standard deductions per filing status. Layout: Header with title, tax year selector, filing status tabs. Input section: gross income, filing status, state selector, additional deductions input. Results dashboard: total federal tax, effective rate, marginal rate, state tax, FICA (Social Security + Medicare), total tax burden, take-home pay. Bracket breakdown table: each bracket range, rate, tax in that bracket, running total. Stacked bar chart showing income colored by bracket. Standard vs itemized comparison tool. Include "Understanding Tax Brackets" explainer, "Common Tax Deductions" reference, and "Marginal vs Effective Rate" educational section. Save calculations to localStorage. SEO: title, meta description, OG tags. Pre-fill with 2025 federal brackets. Read the guide at https://accessagent.ai/api/guide and follow it to deploy the site to AccessAgent.ai. My email is [your@email.com].

Make It Yours

Capital Gains

Add short-term and long-term capital gains tax calculation with qualified dividend rates.

Self-Employment

Calculate self-employment tax, quarterly estimated payments, and Schedule SE deductions.

Year-over-Year

Compare tax liability across multiple years to see how bracket changes affect your bill.

AMT Calculator

Alternative Minimum Tax estimation for high-income earners with AMTI calculations.

Tax Credits

Estimate common tax credits like Child Tax Credit, EITC, and education credits.

Paycheck Estimator

Break down per-paycheck withholding for weekly, biweekly, and monthly pay frequencies.

Update Prompt

Update Prompt — Update tax brackets

Update federal tax brackets and standard deductions for the new tax year. Add any new state tax rate changes. Update FICA wage bases and rates. Add new tax credit limits. Update FEDERAL_BRACKETS, STATE_TAXES, DEDUCTIONS arrays. Redeploy.

SEO Tips

Target "tax bracket calculator 2025", "federal income tax calculator", and "marginal tax rate" keywords.
Create state-specific pages like "California Income Tax Calculator" and "Texas Tax Guide."
Write explainer content like "How Tax Brackets Work" and "Standard vs Itemized Deductions."
Add FAQ schema answering "What tax bracket am I in?" and "How much tax do I owe on $100K?"
Include filing status comparison pages to capture "married filing jointly vs separately" searches.

Monetization Ideas

Tax software affiliates (TurboTax, H&R Block, TaxAct) during tax season for high conversion.
Tax planning book affiliates for year-round tax optimization strategies.
Google AdSense on tax calculator pages with massive Q1 seasonal traffic.
CPA and tax professional directory referrals for complex tax situations.
Tax course affiliates for self-employed and small business owners.

Related Ideas

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