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I want a native Windows and Web base desktop application that merges GST-compliant billing, live inventory control, and full accounting into one smooth workflow. The focus is on reliability and speed for everyday shop floor or back-office use, so a lightweight installer that runs on Windows 10/11 without extra dependencies is ideal. Essential features • GST Billing – automatic tax calculations, HSN/SAC support, and printable invoices in the latest government format • Inventory Management – item masters, batch/expiry handling, low-stock alerts, and purchase order tracking • Accounting – double-entry ledger, cash/bank books, and basic financial statements that reconcile seamlessly with the sales and purchase data Please send a detailed project proposal outlining: • The development stack you recommend (e.g., .NET, Electron, or another Windows-friendly framework) • Key milestones with the functionality you will deliver at each stage • Any similar work you have completed and how it relates to this project • Post-deployment support and update strategy, especially for future GST rule changes I will evaluate proposals on clarity of approach, relevant past experience, and the practicality of your timeline. Looking forward to seeing how you would bring this all-in-one Windows solution to life.
Project ID: 40706238
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Hi, I’ve reviewed the requirements for your all-in-one GST billing, inventory and accounting application. I can develop a reliable Windows + Web solution focused on speed, simple workflow and accurate data management. • GST billing with HSN/SAC, automatic tax calculations and invoice generation • Inventory with item masters, batch/expiry tracking, low-stock alerts and purchase orders • Double-entry accounting, cash/bank books and financial statements • Integrated sales, purchase, inventory and accounting data • Secure database, backup and reliable performance • Windows 10/11 installer with a clean, easy-to-use interface • Web-based access for management/back-office requirements • Testing, deployment and documentation **Recommended Stack:** .NET 8 + ASP.NET Core, React, PostgreSQL/SQL Server and Windows desktop deployment. **Fixed Project Cost: ₹10,000** I can deliver the project in milestones, starting with billing and inventory, followed by accounting, integration, testing and deployment. I’ll also provide post-deployment bug-fixing support and keep the system structured for future GST rule updates. I’m available to start immediately.
₹12,500 INR in 5 days
0.0
0.0
21 freelancers are bidding on average ₹26,107 INR for this job

As a seasoned software development team that comprises of experienced full-stack developers and infrastructure experts, we bring to the table a level of proficiency that aligns impeccably with your project requirements. Our thorough understanding of your needs and business goals guides our every approach, ensuring the end result is reliable, scalable, and future-ready. Choosing us would mean enjoying not just a piece of code but a technical partner with a proven track record of high client retention and repeat hires. In terms of the technology stack, we recommend leveraging .NET for your Windows-based GST Billing & Inventory Accounting system. Its robustness, security, and compatibility with Windows 10/11 provide the foundation you seek for a fast and lightweight installer without additional dependencies. We'll use our expertise in database management to ensure seamless integration between different aspects of the application - from tax calculations to purchase order tracking to double-entry ledger.
₹35,000 INR in 26 days
5.5
5.5

The real challenge is making GST billing, inventory and accounting work as one reliable transaction flow. A sale should update stock and ledger entries automatically, without duplicate or inconsistent data. I can build this as a .NET-based Windows + Web solution with ASP.NET Core APIs and a robust SQL database, keeping business logic shared across platforms. ✅ GST billing with HSN/SAC and configurable tax calculations ✅ Double-entry ledger, cash/bank books and financial statements ✅ Item masters, batches, expiry and low-stock alerts ✅ Purchase orders and sales/purchase synchronization ✅ Shared API/database architecture for Windows + Web ✅ Lightweight Windows 10/11 deployment ✅ Role-based access, validation, audit trails and backups ✅ Configurable GST rules for easier future updates ✅ Testing, deployment documentation and post-launch support I’d structure development as architecture → billing → inventory → accounting → reconciliation → Windows/Web QA → deployment. Ashish Malik | Full Stack Developer & Digital Marketing Expert 9+ years | 500+ projects delivered I won’t fabricate GST/accounting project references. I can share relevant verified work where available and explain the proposed architecture before development. The goal is a dependable business system where billing, stock and accounts remain synchronized as the application grows. Let’s start a chat and map the milestones around your exact workflow.
₹25,000 INR in 7 days
4.5
4.5

As a seasoned full-stack developer, I am incredibly well equipped to bring your vision for this Windows GST Billing & Inventory Accounting system to life. I have a proven track record in SaaS, ERP, CRM, POS, HRMS, and Inventory Management systems development - all crucial components of your sought-after project. In terms of technology stack recommendation, I strongly suggest the tried-and-tested Microsoft .NET framework for its compatability with Windows OS. My approach will involve developing modules focusing on HSN/SAC support for automatic tax calculations, batch/expiry handling for inventory management and seamless double-entry ledgering for accurate accounting. Throughout the project, I commit to clear milestones that outline the functionality delivered at each stage as well as post-deployment support and update strategy - something that will be invaluable for adapting to future GST rule changes. My past work ranges from developing multi-branch management systems to integrating WhatsApp APIs into business automation flows - all indicative of my talent in unifying diverse processes into a singular, powerful solution. My many skills include API development, database management and web development - key characteristics that any proficient programmer undertaking this project should possess. Let's embark on this journey together - leverage my enthusiastic drive and experience in creating efficient and effective business tools with an unwavering focus on your needs!
₹25,000 INR in 20 days
4.1
4.1

My implementation plan: Milestone 1: Database architecture, item/customer/vendor masters, GST configuration, HSN/SAC and tax engine. Milestone 2: GST billing, invoice numbering, printing/PDF, sales returns and GST-ready invoice structure. Milestone 3: Purchases, batch/expiry, stock movements, purchase orders and low-stock alerts. Milestone 4: Double-entry accounting, ledgers, cash/bank books, trial balance, P&L and balance sheet. Milestone 5: Reconciliation between sales/purchases, inventory and accounts, performance testing, installer and deployment. Milestone 6: Production rollout, documentation and support. For GST changes, I’d keep the tax/invoice rules configurable and isolated from the core transaction engine. That makes future government-format, tax-rate or compliance changes much safer to roll out than hard-coding them throughout the application.
₹25,000 INR in 7 days
3.7
3.7

Hi there, I can build this as a Windows-first .NET application with a shared web/API layer, keeping billing, inventory and accounting connected through one reliable data model. I’d recommend .NET 8 with a Windows desktop UI and ASP.NET Core API backed by SQL Server, giving you strong Windows 10/11 support while leaving a clean path for web access and future integrations. The core workflow will cover GST/HSN-SAC billing, current invoice formatting, batch/expiry inventory, stock alerts, purchase orders, double-entry ledgers, cash/bank books and financial statements that reconcile directly with sales and purchases. I’d deliver it in testable milestones, with accounting and tax calculations validated against real scenarios before release. The installer will be lightweight and designed to minimise external dependencies. I’ll also structure GST rules so future regulatory updates can be maintained without rewriting the application, with post-deployment support and documentation included. Thanks
₹27,000 INR in 5 days
3.5
3.5

Hello, I am an experienced .NET developer. I have gone through your requirements and I can develop a user-friendly accounting and inventory management application as per your needs. I have developed several applications with similar requirements and have good experience in developing business and accounting-related software. Please message me to discuss your project requirements in detail. Thank you.
₹25,000 INR in 7 days
2.7
2.7

Hello, I have read your project requirement description carfully! The key is keeping GST billing, stock movements and double-entry accounting tied to the same transaction flow so the numbers reconcile instead of becoming separate modules. I’d use .NET with a Windows-native desktop UI and a structured database, keeping the architecture ready for web/API access where required. I’ll build this in milestones: item/party masters and GST billing first, then batch/expiry inventory and purchasing, followed by ledgers, cash/bank books, financial statements, reports and installer packaging. Tax rules should be isolated from core billing logic so future GST changes can be updated without rewriting the accounting engine. I can also add validation and reconciliation checks between sales, purchases, stock and ledger entries. Which GST invoice/report format and database environment do you currently prefer? Looking forward to working with you. Muheebwa
₹35,000 INR in 6 days
2.5
2.5

Hello, You need a reliable all-in-one billing, inventory and accounting system where sales, purchases, stock and financial records stay synchronised instead of operating as separate modules. I can structure the application around that unified workflow, with performance and data accuracy as priorities. With 5+ years of software development experience, I recommend .NET for the Windows application with a web-compatible architecture and a secure database/API layer. The system can cover GST billing with HSN/SAC and automated tax calculations, printable invoices, item/batch/expiry management, stock alerts, purchase orders, double-entry accounting, cash/bank books and financial statements with proper reconciliation. Milestones can be delivered as: architecture/database → billing & GST → inventory/purchasing → accounting & reconciliation → reporting, testing and deployment. I’ll build validation and audit-friendly workflows to reduce data inconsistencies and make future GST rule updates easier to maintain. I’ll provide deployment support, documentation, testing and post-launch maintenance for bug fixes and future compliance changes. Relevant business application samples can be shared where applicable. Best Regards, Shailender
₹14,500 INR in 15 days
2.1
2.1

I understand you need a fast, reliable, lightweight native Windows (and web-based) application merging GST billing, inventory, and accounting. With my .NET expertise and accounting knowledge, I can deliver this all-in-one solution. 1. Recommended Stack I recommend C# with .NET (WPF or WinForms) for the native Windows client, ensuring a lightweight installer with zero external dependencies. For the web version, I will use ASP.NET Core. For the database, SQLite is ideal for local speed, or SQL Server Express for multi-user networks. 2. Key Milestones (4-Day Delivery) · Day 1: Database schema design (double-entry ledger, item masters, GST tables) and .NET project setup. · Day 2: GST Billing module (auto-tax calculation, HSN/SAC support, printable government-format invoices). · Day 3: Inventory Management (item masters, batch/expiry tracking, low-stock alerts) and Accounting core (cash/bank books, seamless sales/purchase reconciliation). · Day 4: Full testing, lightweight installer creation, and final handover. 3. Relevant Experience I have built similar ERP and POS systems using .NET. I understand the strict data integrity required for double-entry bookkeeping and the compliance needs for Indian GST invoicing. 4. Post-Deployment & Future GST Updates I offer 30 days of free post-deployment support. To handle future GST changes, I will build the tax engine as a modular, configurable component.
₹18,000 INR in 4 days
0.0
0.0

Freelancer Proposal You need more than three separate modules—the key is keeping billing, inventory, and accounting in one consistent transaction flow so sales/purchases update stock and ledgers without reconciliation gaps. I recommend a .NET architecture: a Windows desktop client for fast shop-floor use, ASP.NET Core/Web API for shared services/web access, and SQL Server for transactional data. GST rates, HSN/SAC mappings, invoice formats, and tax rules should be configuration-driven so future rule changes can be updated without redesigning the application. Relevant experience includes a C#/ASP.NET MVC + SQL Server chemical trading/inventory system covering warehouse, purchase/sales transactions and reporting; a VB.NET/WinForms sales system; ERP work involving warehouse transfers and invoice information; and Windows installer/package work. Proposed delivery stages: Requirements/data model and GST/accounting rule mapping Billing, masters and printable invoices Inventory, batch/expiry, stock alerts and purchasing Double-entry ledger, cash/bank books and financial reports Integration testing, installer, documentation and update strategy One key question: should the first release support one company/location or multiple GST registrations/branches?
₹30,000 INR in 7 days
0.0
0.0

Drawing from years of experience as an AI Automation Engineer and Full-Stack Web Developer, I am fully equipped to create a revolutionary native Windows application that meets all the requirements you have specified. Best of all, it will be GST-compliant, reliable, speed-focused, lightweight and doesn't have the unnecessary dependencies other applications usually come with. My background in Accounting and Web Development make me uniquely positioned to understand your needs in terms of GST Billing, Inventory Management and Accounting. On this project, we will use my skills on Artificial Intelligence, workflow automation and custom platforms development to ensure data reconciliation between sales/purchase entries and financial statements with every requirement covered. Moreover, I specialize not just in creating practical solutions but providing long-term support. The GST rules may change and I would not like you to be stuck in a rut then. Therefore, my post-deployment support strategy includes promptly addressing future GST rule changes alongside regular updates and improvements for the whole system. My goal is to assist your business in not only automating but also optimizing operations for enhanced productivity and growth.
₹25,000 INR in 10 days
0.0
0.0

Building GST billing on top of live inventory and a real double-entry ledger is the hard part here, most billing apps I've seen bolt tax calculation on top and the books never actually reconcile with sales/purchase data. That reconciliation problem is exactly what I've spent 14 years on for a manufacturing group, C#/.NET desktop apps over SQL Server doing payroll, inventory and ledger work that has to tie out every close. For stack I'd go native WinForms (or WPF) for the desktop client so the installer stays lightweight with no runtime dependencies, backed by SQL Server, with an ASP.NET Core API layer underneath so the same data serves a web view if you want remote access later. Milestones: 1) item master, batch/expiry, stock movements 2) GST invoicing with HSN/SAC and the current print format 3) ledger, cash/bank books, P&L/balance sheet tying back to 1 and 2 4) polish, installer, UAT. For fixed price I'd want each milestone scoped and signed off before the next starts, keeps both sides clear on what "done" means. For GST rule changes I'd keep tax logic in configurable tables rather than hardcoded, so rate updates don't need a redeploy. Do you already have a chart of accounts and invoice format you're using now, or should that be designed as part of this?
₹22,500 INR in 7 days
1.9
1.9

Hello, I have carefully reviewed your requirement for a Windows and Web-based GST Billing, Inventory and Accounting application. I can develop this as a modular and easy-to-use system focused on speed, reliability and simple daily operations. My proposed stack is .NET/ASP.NET Core with a modern web frontend and a suitable Windows deployment approach. The system will include GST billing with HSN/SAC and tax calculations, inventory with batch/expiry and low-stock alerts, purchase tracking, double-entry accounting, cash/bank books, ledgers and financial reports. I would develop the project in milestones, starting with database and master setup, followed by billing, inventory, accounting, reporting, testing and final deployment. I am committed to clear communication, regular progress updates and thorough testing. I will also keep the GST-related functionality configurable so future tax or compliance changes can be updated efficiently. I am ready to discuss your exact workflow and start immediately. Thank you.
₹25,000 INR in 7 days
0.0
0.0

Hi, saw your post about the GST billing and inventory app for Windows. The hard part is keeping the ledger reconciled automatically as tax rules change, not just printing invoices in the latest format. Do you need multi user access across the shop floor or just a single till for now? I have built similar billing and inventory systems for retail shops before, with batch and expiry tracking, low stock alerts and a double entry ledger all reading from the same database. I can also set up a simple update path so future GST rule changes do not mean a full rebuild. Happy to start on a small milestone so you can judge it first. Regards, Hassan
₹12,500 INR in 5 days
0.0
0.0

As a proficient freelance developer with a strong background in website and mobile app development, I'm confident that I can bring your vision of a Windows GST Billing & Inventory Accounting software to reality. I'm an expert in .NET and other Windows-friendly frameworks, which makes me the perfect fit to create a lightweight installer without extra dependencies for seamless use on Windows 10/11. Over the past 9+ years, I've successfully built and delivered numerous e-commerce and CMS-based websites that demanded meticulous handling of tax calculations, inventory management, and overall accounting - skills that align perfectly with your project's needs. Post-deployment support is also one of my top priorities; I'm keenly aware of the ever-evolving GST regulations and will ensure your software stays up-to-date with any future changes. With prompt response times, reliable support, and cost-effective solutions like free hosting services for three months after delivery, I confidently offer you a comprehensive package of skills and services that will make this project not just successful but also sustainable in the long term.
₹25,000 INR in 7 days
0.0
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