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I need a straightforward system that lets me record every sale and purchase, then automatically calculates the correct CGST, SGST or IGST and prepares all the summaries required for my periodic GST returns. The key outcome is a one-click export of GSTR-1 and GSTR-3B (JSON or Excel) that I can upload directly to the government portal, along with a clear dashboard showing my current liabilities and input credits. Although my immediate priority is GST calculation and filing, it would be helpful if the architecture leaves room for future additions such as invoice generation or even inventory tracking, so please keep the codebase modular. Deliverables • A working desktop or web application (Windows-friendly or browser-based) • Accurate GST computation engine with HSN/SAC support • Return-ready files for GSTR-1 and GSTR-3B • Basic user guide and short onboarding session • Source code and documentation sufficient for future feature expansion Acceptance criteria 1. I can input at least 1000 transactions without noticeable lag. 2. Tax values match the government portal’s validation tool. 3. Exported JSON uploads without errors. Feel free to choose the tech stack you’re comfortable with—just make sure it stays lightweight, secure, and easy for a non-technical user to operate.
Project ID: 40549078
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2 freelancers are bidding on average ₹1,185 INR/hour for this job

We can built modular full-stack systems handling complex data pipelines and export logic — and we know what 'return-ready JSON' actually means in practice. Here's exactly what you get: → Web-based app (browser, no install headache) → Smart GST engine — CGST/SGST/IGST auto-switching based on transaction type, full HSN/SAC support → One-click GSTR-1 + GSTR-3B export in JSON and Excel, portal-ready → Dashboard showing live liabilities vs input credits → 1000+ transactions with zero lag (indexed DB, paginated queries) → Modular architecture — invoice generation or inventory plugs in cleanly later → Onboarding session + user guide included Stack: React + Node.js + MongoDB (or SQLite for lightweight desktop feel — your call). We build clean, documented, expandable codebases. Not spaghetti you'll regret in 6 months. One question before we start: are your transactions B2B, B2C, or mixed? That determines the GSTR-1 table structure from day one
₹1,120 INR in 40 days
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prayagraj, India
Member since Feb 7, 2026
₹750-1250 INR / hour
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$2-8 USD / hour
$30-250 USD
₹750-1250 INR / hour
₹12500-37500 INR
₹400-750 INR / hour
₹1500-12500 INR
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$250-750 USD
$15-25 USD / hour
₹750-1250 INR / hour
$250-750 USD
₹750-1250 INR / hour
₹12500-37500 INR