🇨🇦 Canatax – The Canadian Tax Calculator

Canatax is a dependency-free Python package for calculating Canadian income and sales taxes, including all federal and provincial deductions. It supports CPP, EI, QPIP, QPP, and automatically applies GST, PST, HST, or QST based on the province or territory.

📦 Zero dependencies.
🧮 Always current.

🚀 Features

Income Tax Calculation

• Calculates:
  • Federal tax
  • Provincial/territorial tax
  • CPP or QPP (based on province)
  • EI or EI (Quebec)
  • QPIP (Quebec parental leave)
• Returns a structured IncomeTaxEstimate with:
  • Individual line items
  • Total deductions
  • Net after-tax income

Sales Tax Estimation

• Calculates:
  • GST, PST, HST, and QST
• Returns a SalesTaxEstimate with:
  • Breakdown by tax type
  • Total tax
  • After-tax amount

📦 Installation

pip install canatax

💼 Usage

Income Tax

from canatax import IncomeTaxCalculator

estimate = IncomeTaxCalculator.calculate(income=80000, province="BC")

print(estimate.province)
print(estimate.federal_tax)
print(estimate.provincial_tax)
print(estimate.cpp)
print(estimate.qpp)
print(estimate.qpip)
print(estimate.ei)
print(estimate.total_tax)
print(estimate.net_income)

Sales Tax

from canatax import SalesTaxCalculator

estimate = SalesTaxCalculator.calculate(amount=100.00, province="QC")

print(estimate.province)
print(estimate.gst)
print(estimate.qst)
print(estimate.pst)
print(estimate.hst)
print(estimate.tax_total)
print(estimate.after_tax)
print(estimate.before_tax)

📘 API Overview

• IncomeTaxCalculator.calculate(income, province)
  → returns IncomeTaxEstimate
• SalesTaxCalculator.calculate(amount, province)
  → returns SalesTaxEstimate

Both calculators also support manual instantiation with ._calculate() as an instance method if preferred.

🤝 Contributing

Bug fixes and suggestions are welcome! Open an issue or submit a pull request.

🔒 License

MIT – Free for personal or commercial use. Go nuts.

☕ Support

If you found this useful and want to support future development,
you can buy me a coffee. It helps keep the lights on and the tax brackets fresh.