Table of Contents

• PTAXSIM
• FAQs
• Installation
  • Package installation
  • Database installation
• Usage
  • Single bill, single year
  • Single bill, multiple years
• Data
  • Data sources
  • Database diagram
• Notes and caveats
• Disclaimer
• Release procedures
  • Schema
  • Timing
  • Checklists

PTAXSIM

:warning: NOTE: PTAXSIM relies on a separate SQLite database to function correctly. You must download and decompress the database before using this package! See Database installation for details.

Link to PTAXSIM database (DB version: 2025.0.0; Last updated: 2026-11-10 17:18:26)

PTAXSIM is an R package/database to approximate Cook County property tax bills. It uses real assessment, exemption, TIF, and levy data to generate…