TaxCalcBR

Financial System to Calculate Interest Rate

Description

TaxCalcBR is a Python-based project that simplifies retrieving and calculating Brazilian financial indices, such as the SELIC and CDI rates. The tool provides automation, statistical insights, and a web-based graphical interface to assist financial planning, investment decision-making, and economic analysis.

Features

• Interactive user menu: Allows users to provide information about interest rates, purchases, and installment payments.
• Compound interest: Calculates the annualized SELIC rate using compound interest formulas.
• Flexible input handling: Supports user-friendly formats for financial data (e.g., values with commas or dots).
• Interactive web interface: Enables users to interact with the system through a modern, responsive interface.

System modeling

The system processes input data to convert rates for different periods (e.g., annual to monthly) and performs cumulative calculations, such as annualized returns based on compound interest principles.

Data manipulation

• Data cleaning: Ensures raw data is stripped of unnecessary characters and formatted consistently.
• Financial calculations: Implements formulas for accurate and reliable financial projections.

Web Interface

The project includes a web-based graphical interface developed using HTML, CSS, and JavaScript:

• Dynamic inputs: Adjusts fields dynamically based on user selections (e.g., enabling or disabling discount or interest rate inputs).
• Real-time calculations: Performs calculations and displays results dynamically without requiring page reloads.
• Smooth navigation: Automatically scrolls to results after calculations.

Goals

The primary goal of TaxCalcBR is to offer a streamlined, accurate, and user-friendly platform for managing and analyzing financial indices in Brazil. By automating rate retrieval and calculations, TaxCalcBR empowers users to make informed financial decisions effortlessly.

Languages and Tools

🖥 Back-end

🌐 Front-end

🔧 Development Tools

License

This project is licensed under the MIT License.

• Run the script: Execute the main script (finances.ipynb) to fetch SELIC data and perform calculations.
• Run the web interface:
  1. Open the https://tax-calc-br.vercel.app/ file in a web browser.
  2. Enter the required inputs into the form.
  3. Click "Calcular" to view the results.
• Interpret the output: Analyze the financial planning and decision-making results provided.