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ACA Premium Tax Credit Calculator

Compare 2026 Premium Tax Credits with and without Inflation Reduction Act (IRA) enhancements.

🔗 Try the Calculator

Overview

The Inflation Reduction Act enhanced ACA subsidies through 2025. This calculator shows what your credits would be in 2026 with and without extending these enhancements.

Key Differences:

  • With IRA Extension: No income cap, lower premium contributions (0-8.5% of income)
  • After IRA Expires: 400% FPL cap ("subsidy cliff"), higher contributions (2-9.5% of income)

Quick Start

Use the Live App

Visit https://policyengine-aca-calc.streamlit.app/ to use the calculator immediately.

Run Locally

# Install dependencies
pip install -r requirements.txt

# Run the app
streamlit run app.py

The app will open at http://localhost:8501

Features

  • All 50 States + DC: Accurate calculations for every jurisdiction
  • 3,143 Counties: County-specific marketplace pricing
  • Real-time Comparison: Side-by-side baseline vs. IRA extension
  • Interactive Charts: See how credits change across income levels
  • Household Flexibility: Single, married, with/without dependents

Example Results

Scenario Income Baseline PTC With IRA Savings
NJ Family of 3 $50,000 $8,515 $10,626 $2,111/year
TX Couple (Travis) $60,000 $6,974 $9,195 $2,221/year
CA Couple + Child $75,000 $12,913 $15,695 $2,782/year
NY Single @ 400% FPL $62,280 $0 $2,899 $2,899/year

Technical Details

Built with:

County data sourced from PolicyEngine's ACA rating areas database.

Project Structure

.
├── app.py                  # Main Streamlit application
├── counties.json           # County data for all states
├── process_counties.py     # County data processor
├── requirements.txt        # Python dependencies
├── tests/                  # Test files
├── notebooks/              # Analysis notebooks
└── archive/                # Historical files

Development

# Run tests
python tests/test_reform_verification.py

# Update county data
python process_counties.py

License

Open source - see PolicyEngine US license for underlying calculations.

Credits

Calculations powered by PolicyEngine US

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