Software Requirements Specification (SRS) for GST Input Tax Credit Calculator
Introduction
Purpose:
The purpose of this document is to define the requirements for the development of a GST Input Tax Credit Calculator. This web-based application aims to assist businesses in calculating the eligible input tax credit under the Goods and Services Tax (GST) system.
Scope:
The GST Input Tax Credit Calculator will provide businesses with a user-friendly interface to input GST details and calculate the input tax credit. The application will adhere to GST regulations and guidelines.
System Overview
System Description:
The system will be a client-server application. Users will access the GST Input Tax Credit Calculator through a web browser. The server will handle the logic for input tax credit calculations.
System Architecture:
The application will follow a three-tier architecture: presentation layer (client-side browser), application layer (server-side processing), and data layer (storage and retrieval of data).
Functional Requirements
Use Cases:
Calculate Input Tax Credit:
- Users can input GST details, including GST paid on purchases and GST received on sales.
- The system will calculate and display the eligible input tax credit based on the provided information.
Functional Requirements:
Input:
The system shall allow users to enter the following details:
- GST Amount Paid on Purchases (in INR)
- GST Amount Received on Sales (in INR)
Calculation:
- The system shall calculate the eligible input tax credit based on the provided GST amounts.
Output:
- The system shall display the calculated input tax credit amount to the user.
External Interface Requirements
User Interfaces:
- The user interface shall consist of input fields for GST amounts paid and received, along with a “Calculate” button.
- The calculated input tax credit amount shall be displayed prominently.
Hardware Interfaces:
- The system should be compatible with standard computing hardware.
Software Interfaces:
- The application will be developed using HTML, CSS, and JavaScript for the frontend.
- The backend can be implemented using a server-side framework (e.g., Node.js, Django) with a database for data storage.
Communication Interfaces:
- The application will communicate with the server for input tax credit calculations.
Performance Requirements
Response Time:
The system should provide a response time of under 3 seconds for a typical user input.
Throughput:
The application should handle at least 50 simultaneous users.
System Constraints
Regulatory Requirements:
The application should comply with relevant GST regulations and guidelines.
Hardware Limitations:
The system should be compatible with devices supporting standard web browsers.
Security Requirements
Authentication:
User authentication may be implemented to ensure data security.
Data Protection:
User data, if stored, should be securely protected.
Quality Attributes
Reliability:
The application should provide accurate input tax credit calculations based on the entered GST details.
Maintainability:
The code should be well-documented for ease of maintenance.
Usability:
The user interface should be intuitive, requiring minimal guidance.
Testing Requirements
Test Cases:
Test cases should cover various scenarios with different GST amounts to ensure accurate input tax credit calculations.
Test Case 1:
- Inputs: GST Amount Paid on Purchases = 50,000 INR, GST Amount Received on Sales = 80,000 INR.
- Expected Output: Input Tax Credit ≈ 50,000 INR
Test Case 2:
- Inputs: GST Amount Paid on Purchases = 1,00,000 INR, GST Amount Received on Sales = 1,20,000 INR.
- Expected Output: Input Tax Credit ≈ 1,00,000 INR
Test Case 3:
- Inputs: GST Amount Paid on Purchases = 30,000 INR, GST Amount Received on Sales = 40,000 INR.
- Expected Output: Input Tax Credit ≈ 30,000 INR
Acceptance Criteria:
The application is considered successful if it produces correct input tax credit amounts based on the provided GST input amounts.
Project Timeline
Milestones:
Design, Development, Testing, Deployment.
Development Phases:
Frontend development, Backend development, Testing, Deployment.
Glossary
None
Database Structure
Tables:
GST_Input_Tax_Credit_Records:
- RecordID (Primary Key, Auto-increment)
- GSTAmountPaidOnPurchases (Decimal)
- GSTAmountReceivedOnSales (Decimal)
- InputTaxCreditAmount (Decimal)
- CalculationDate (DateTime)
Conclusion
This SRS document outlines the requirements for the GST Input Tax Credit Calculator. It serves as a guide for the development team and ensures that the application meets the specified criteria. Review and approval by relevant stakeholders are essential before proceeding with the development phase.