Buyer's guide · updated Nov 2026

How to choose GST software for a CA firm

GST software for a CA firm is a different purchase from GST billing software for a shop. You are not raising invoices — you are reconciling, tracking and filing for dozens or hundreds of GSTINs. This guide covers what to check, how pricing works and what to ask before you buy.

1. Map your GST workload first

Count your GST clients, split them into monthly and QRMP filers, and note which send Tally data, Excel or nothing at all. A firm with 40 monthly filers on Tally needs something different from a firm with 400 QRMP composition clients. Write the numbers down — you will need them to compare prices.

2. The checklist

1. 01Reconciliation. Does it match GSTR-2B and GSTR-2A against the purchase register, handle IMS, and catch partial invoice-number matches? Can you export mismatches supplier-wise to send to clients?
2. 02Multi-client tracking. Can you see every client's GSTR-1 and GSTR-3B status for the period in one list? Does it know which clients are on QRMP and which file monthly?
3. 03Verified filing status. Is a return marked filed because someone ticked a box, or because the GSTN confirms it with an ARN and date?
4. 04Return coverage. Which returns can it prepare and file — GSTR-1, 3B, 9, 9C, CMP-08, GSTR-4, GSTR-7, ITC-04? Or does it hand off to the portal?
5. 05Data import. Does it read the formats your clients send — Tally exports, Excel, JSON from the portal, ERP APIs?
6. 06Pricing model. Is it a flat yearly plan, per user, per GSTIN or per organisation? Work out the cost at your client count next year, not today.
7. 07Data handling. Where are client files processed and stored? Who at the vendor can access them?

3. Reconcile, track, file: three separate jobs

Most GST tools are strong at one of these and adequate at the others. Reconciliation decides how much input tax credit a client keeps. Tracking decides whether anything slips past a due date. Filing is the last step and the easiest to do on the GST portal if your software doesn't. Judge each tool on the job you spend the most hours on.

For example, Finexo GST reconciles and tracks but doesn't file — you file on the portal. Saral GST and Spectrum file most returns from inside the product. See reconciliation rankings and compliance tracking rankings.

4. Understand the pricing model

GST software is sold as flat yearly plans, per-user or per-machine licences, per-organisation subscriptions, or on-request packs priced by GSTIN count. A low entry price can become the most expensive option at 300 clients. Our GST software price list puts every published plan in one table.

5. Questions to ask every vendor

• →What will I pay next year if my GSTIN count doubles?
• →How do you mark a return as filed — manual tick or GSTN confirmation?
• →Can I reconcile a QRMP quarter by uploading three monthly GSTR-2B files?
• →How quickly did you support IMS after GSTN launched it?
• →Can I export my data in Excel if I leave?

6. Trial it on a real month

Take last month's GSTR-2B and purchase register for three real clients — one clean, one messy, one QRMP — and run them through each shortlisted tool. The tool that finds the same mismatches you found by hand, in less time, is the one to buy.