Fast GST Refund vs Gen GST: which tools do you need?

Use Fast GST Refund to create the Statement 3 and Annexure B JSON files in a browser, and for free preparation templates, guidance and receipt-allocation checks. Evaluate Gen GST if your team needs a licensed GST application with a documented Annexure B import and JSON workflow.

Fast GST Refund publishes this comparison. Gen GST information comes from SAG Infotech’s public documentation; we have not tested a licensed installation.

Compare the available tools

Your requirement	Fast GST Refund	Gen GST
Preparation records	Free Statement 3 and Annexure B working templates and review checklist.	Confirm the source imports and working-paper exports in your package.
Receipt allocation	Offline checker and a remote tool for anonymous amounts.	Ask for a demonstration using partial and combined receipts.
Annexure B JSON	Browser generator with the official utility’s checks: type, paste or import rows.	Vendor walkthrough documents import and JSON generation.
Statement 3 JSON	The same generator, for export documents and BRC/FIRC rows.	Ask for a demonstration.
AI assistant access	Free MCP connection and downloadable Codex plugin.	Ask the vendor about supported integrations.
Cost	The JSON files cost ₹499 + GST once per GSTIN and refund period. The other tools are free.	Obtain a package-specific licence and update quote.

Start with Fast GST Refund

Create both upload files with the JSON generator. Checking your records is free; downloading costs ₹499 + GST once per GSTIN and refund period.

Download the preparation pack and use its templates to organise invoices, receipts and purchase credit. The Statement 3 example shows the receipt working; the Annexure B example shows purchase entries and exclusions.

If you work in an AI assistant, connect the MCP tools to retrieve guidance, check allocations and prepare the entries for the two files. These tools do not retrieve data from your GST or accounting accounts.

Evaluate Gen GST with your actual workflow

SAG’s Annexure B walkthrough describes selecting a client and period, importing GSTR-2B or government Excel data, completing missing fields and generating JSON.

Ask the vendor to demonstrate the rest of your claim: service-export receipts, Statement 3, the refund calculation, ledger limits and the records retained for review. Request the precise product name and included modules in the quote. The SAG price calculator is a starting point for that discussion.

Make the choice

If your immediate task is creating the two JSON files, organising records or checking allocations, try Fast GST Refund’s tools. If you need licensed practice software, run a sample claim through Gen GST and compare the output and reviewer effort with your current process.

Use the Gen GST evaluation guide for the pilot, or compare other preparation workflows.