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1. GOVERNMENT OF KARNATAKA
DEPARTMENT OF TECHNICAL EDUCATION
GOVERNMENT ENGINEERING COLLEGE,TALAKAL-583238
DEPARTMENT OF COMPUTER SCIENCE & ENGINEERING
MOBILE APPLICATION DEVELOPMENT
MINI PROJECT ON “ GST BLLING SYSTEM ”
BACHELOR OF ENGINEERING IN COMPUTER SCIENCE & ENGINEERING
Under the Guidance of:
KAVITHA BE
Presented by:
ABDULLAABRAR 2LG20CS001
ABHISHEK VASTARD 2LG20CS002
AKASH 2LG20CS003
SYED FAIZAN 2LG20CS038

2. CONTENTS
 ABSTRACT
 INTRUDUCTION
 LITERATURE SERVEY
 REQUIREMENT SPECIFICATION
 SYSTEM DESIGN
 SYSTEM IMPLEMENTATION
 RESULTS
 CONCLUSION
 REFERENCE

3. ABSTRACT
 1. User-friendly Interface: The application offers an intuitive and visually appealing interface, ensuring
ease of use for both novice and experienced users. The design follows Android's Material Design
guidelines, providing a familiar and consistent user experience.
 2. Invoice Generation: Users can create professional invoices customized with their business logo,
company information, and relevant transaction details. The system automatically calculates the
applicable GST based on predefined tax rates, simplifying the billing process.
 3. Product and Customer Management: The system enables users to maintain a comprehensive database
of products and customers. This feature facilitates quick selection of products during invoicing and helps
track customer transactions, payment history, and outstanding dues.
 4. Tax Calculation and Compliance: The GST Billing System automates the tax calculation process,
ensuring accurate and compliant calculations. It considers various GST rates applicable to different
product categories and generates tax invoices with the necessary tax details.

4. INTRODUCTION
 The Android GST Billing App Mini Project is a compact yet comprehensive application designed to assist
businesses in generating GST-compliant invoices and managing their billing processes efficiently. With the
implementation of Goods and Services Tax (GST) in many countries.
 It has become imperative for businesses to have a reliable system that automates tax calculations, generates
accurate invoices, and maintains transaction records. This mini project aims to address these requirements by
providing a user-friendly and feature-rich billing application on the Android platform.
 The primary objective of the Android GST Billing App is to simplify the invoicing process for businesses
while ensuring compliance with the prevailing GST regulations.
 It enables users to create professional invoices, calculate taxes based on predefined rates, and generate
reports summarizing sales, purchases, and tax collections. By automating these tasks, the app eliminates
manual errors, reduces paperwork, and streamlines billing operations.

5. LITERATURE SERVEY
 1. Research Papers and Articles:
 "Design and Development of a GST Compliant Invoicing System" by Sharma et al. (2019). This research
paper discusses the design and development of an invoicing system that complies with GST regulations. It
emphasizes the importance of automated tax calculation, invoice generation, and compliance reporting.
 2. Existing Applications:
 Vyapar is a popular mobile application available for Android that offers GST-compliant invoicing,
accounting, and inventory management features. It provides a user-friendly interface, customizable invoice
templates, and built-in tax calculations. Analyzing such existing
 3. Android Development Resources:
 The official Android Developer Documentation provides detailed information on various aspects of Android
app development, including user interface design, data storage, networking, and integrating APIs. It serves as
a comprehensive resource for understanding Android development best practices and guidelines.

6. REQUIREMENT SPECIFICATION
HARDWARE REQUIREMENTS
 Processor : Any Processor Above 500MHz
 RAM : 64MB to 512MB
 Hard Disk : 2GB to 8GB
 Input Device : Keyboard, Mouse
 Output Device : Monitor (1366 * 768 or high-resolution display)
 Operating System : 32-Bit or 64-Bit Operating System

7. SOFTWARE REQUIREMENTS
 Language : JAVA
 Protocols : TCP/IP, ICMP
 Operating System : Windows XP and Later
 JDK : JDK Version 18 above
 Software : Android Studio IDE

8. SYSTEM DESIGN
Figure 1: Data Flow Diagram

9. SYSTEM IMPLEMENTATION
 The user interface (UI) design plays a crucial role in creating a user-friendly and intuitive experience. The
UI should incorporate visually appealing layouts, intuitive navigation, and appropriate input controls for
capturing invoice details, customer information, and product selection.
 The Android GST Billing System requires an efficient data management system to handle product
information, customer details, and transaction records. The system can utilize a local database such as
SQLite or a cloud-based solution like Firebase Realtime Database to store and retrieve data.
 Implementing GST tax calculation involves defining tax rates for different product categories, applying the
appropriate rates to product purchases, and generating accurate tax amounts. The system should include a
mechanism to fetch and update tax rates, either from a local database or an API that provides real-time tax
rate information.
 The Android GST Billing System should enable users to generate professional invoices based on the
entered transaction details. The system should include predefined invoice templates that can be customized
with the business's logo, company information, and GSTIN.

10. RESULTS
Figure 1: Password page

11. Figure 2: Customer Details

12. Figure 3: Add Item to bill

13. Figure 4: Total bill amount page

14. CONCLUSION
 The Android GST Billing App Mini Project aims to provide businesses with an efficient and user-friendly
solution for generating GST-compliant invoices and managing billing processes.
 The project's conclusion marks the end of the development phase and reflects on the achievements,
challenges, and potential future enhancements.
 Throughout the project, significant progress has been made in developing a robust Android app that simplifies
the invoicing process, automates tax calculations, and ensures compliance with GST regulations.
 The implementation of features such as invoice generation, product and customer management, tax
calculation, and reporting demonstrates the successful realization of the project's objectives.
 The Android GST Billing App offers a user-friendly interface that enables businesses, particularly small and
medium-sized enterprises (SMEs), to easily navigate and utilize its functionalities.
 The project's implementation has demonstrated the feasibility of creating an intuitive and efficient billing
system on the Android platform.
 However, through research, proper planning, and perseverance, these challenges were overcome, leading to a
functional and reliable billing app.

15. REFERENCES
 Sharma, R., Kumar, A., & Gupta, R. (2019). Design and Development of a GST Compliant
Invoicing System. International Journal of Advanced Research in Computer Science, 10(2), 36-
40.
 Gupta, A., Prasad, M., & Garg, N. (2020). Mobile Application Development for Business
Invoicing and Billing. International Journal of Advanced Computer Science and Applications,
11(4), 26-31.
 Vyapar - GST Invoicing, Accounting & Inventory App. (n.d.). Retrieved from
https://play.google.com/store/apps/details?id=in.android.vyapar
 Zoho Invoice - Billing & Invoice App. (n.d.). Retrieved from
https://play.google.com/store/apps/details?id=com.zoho.invoice
 El Masri, M., & Al-Sarem, M. (2018). Mobile application for billing and invoicing using Android.
2018 IEEE International Conference on Communication, Networks and Satellite (Comnetsat).
https://doi.org/10.1109/comnetsat.2018.8635065

16. Thank You