A library that uses envelop budgeting to manage expenses.

This library intends to provide APIs to develop a envelop budgeting application. It's heavily in development. I am making sure of the correctness and reliability of the API with as many unit and behavioral tests as possible. It uses SQLite database.

• Multiple accounts
• Categories
• Transactions grouped by categories and accounts
• All incomes are automatically ready to assign
• Envelop budgeting
  • Allocating
  • Funding
  • Transferring funds
  • Cleaning up
• Reporting

• Rewriting some core calculations.
• Category calculation should not be dependent on budget account.
• Categories are only going to be about grouping the expenses,
• And all the income will go to default category.

Default category will keep track of actual money. All the income/expenses will be used to calculate actual_total_balance, regardless of category. As actual_total_balance is calculated only from income and expenses, we have one and only source of truth for actual money available.

actual_total_balance = total income - total expenses

I will keep track of category funding by transfer in/out. So when we are calculating available money to fund, we can sum all the transfer outs from default category and minus it from actual_total_balance. We need to consider how much money we actually have.

available_to_fund = actual_total_balance - total transfer out from default category

Tarin Mahmood 💻 📖