Introducing
Introducing
The AI agent for Indian CA firms. GST, ITR, TDS, MCA and books — done on your Mac or Windows PC, every figure worked out by code, every filing signed off by you.
hiSAI 1.0.6 · 14-day free trial · by Fortax, Lucknow
Recorded on a real Mac
One line in Hinglish, and hiSAI books a bank statement for Tally and reconciles a month's GSTR-2B — in the theme you are reading this in.
The rule hiSAI never breaks
An AI that adds up 2,000 invoice lines gets them wrong and bills you for it. hiSAI hands the arithmetic to Fortax's engines and keeps the AI for what only judgement can do.
| AI adding up | hiSAI | |
|---|---|---|
| Invoices in the return | Half missed | Every one |
| Tax | ₹0 on line items | Matches the books |
| Checks | None | Minus lines, place of supply, HSN |
| Portal JSON | Could not be uploaded | Ready to upload |
Meet the team
hiSAI takes the job and does most of it itself. When it needs a specialist, it hands over once, with the context — so a filing week does not cost a filing year of tokens.
Your article assistant who never sleeps. Talk to it the way you talk to your team — "Sharma Traders ka Aug GSTR-1 bana do" — and it plans, runs the engines, works the portal, and brings back files you can file.
GST, ITR, TDS and MCA returns, prepared on the portals up to the approval you give.
Drives the government portals: navigates, downloads, fills. Your sign-in, your OTP.
Bank reconciliation, ledger scrutiny, 2B against the purchase register, 26AS against books.
Research on statute, circulars and case law, every line with a dated citation.
Reads contracts, notices and deeds and says what they bind the client to.
Checks a working paper or computation before it leaves the firm.
Drafts client mail and WhatsApp in your firm's voice. Sends only on your yes.
Watches the compliance calendar: the week ahead and what will slip.
The full toolbox — scripts and web — for the work the other tiers cannot do.
See it work
A sample client, Sharma Traders, on four everyday jobs. Every rupee below comes from the same engines hiSAI runs for you.
Everything in hiSAI
Open the Skills gallery, pick a card, name the client — hiSAI takes the job to the end and asks only for what is really missing, all at once.
GST, income tax, TRACES, MCA — hiSAI navigates, fills and downloads. Captcha, OTP, DSC and the final Submit are always yours.
The client approves access in their own ERP. hiSAI reads sales and purchases, and raises an invoice only after you see a dry run.
Rates, thresholds, due dates and forms come from Fortax's sourced knowledge base, with the URL and the date it was captured.
Reminders, document requests and filing updates drafted in your firm's voice. Nothing leaves until you say yes.
SAI Lite for everyday work, SAI Smart for the hard parts, SAI Advanced for partners. Routed, metered and guarded by Fortax — no AI provider keys ever sit on a laptop.
A Fortax model that runs on your own machine. No internet, no token meter, client data never leaves the office. Join the list and hear first.
Join the waitlistAn agent engine forked and hardened for CA work, deterministic GSTR-1, GSTR-2B and bank engines on Fortax's servers, a sealed document vault, and per-seat metering that keeps a filing season inside its budget. You see one mascot. Underneath is an operating system for a practice.
Security, built in
A CA's practice runs on trust. hiSAI is built so that the AI can do the work without ever holding the keys.
Fortax Blockchain Security Card
A physical NFC card for verified identity and records. Tap it on a phone to prove who you are and what was verified — backed by a tamper-proof blockchain ledger, and never sold.
Open source
49 skills for Indian CA practice, free on GitHub under Apache-2.0. Use them in your own AI, change them, add yours — with credit to Fortax. The number engines stay on Fortax's servers.
# Claude Code /plugin marketplace add amit-voais/fortax-skills /plugin install fortax-skills@fortax # Claude Code and Codex curl -fsSL https://raw.githubusercontent.com/amit-voais/fortax-skills/main/install.sh | bash Installed 49 Fortax skills
Pricing
Start free for 14 days on real client work. Add seats as the firm grows.
Try hiSAI on real client work for 14 days.
One CA, everyday GST, TDS and ITR work.
A small practice, heavier filing weeks.
A full firm with audit-season headroom.
Prices in INR, plus 18% GST. Extra seats at the plan's per-seat rate. 3 months save 5%, 6 months one month free, 12 months two months free.
Questions
No. hiSAI prepares everything up to the last step and stops. Captcha, OTP, DSC or EVC, payment and the final Submit are always done by you. It never types an OTP or a password.
Every total in a GSTR-1, a 2B reconciliation or a booked bank statement comes from Fortax's engines, not from the AI. Where the AI does judge — an HSN code, a probable invoice pair, a ledger for a payee — the reply names it for you to confirm.
Client files stay in your client folder on your computer. Passwords and ERP tokens stay in the Keychain or Windows' protected storage and are never sent to the AI. When an engine reads a register or statement, it processes it and keeps nothing.
SAI models run by Fortax: Lite for everyday work, Smart for the harder parts, Advanced for partners. Fortax routes and meters them, so no AI provider key is ever on your machine. SAI Offline, which runs on your own computer with no token limit, is coming soon.
Both. hiSAI runs on macOS (Apple silicon and Intel) and on Windows 10 and 11, and updates itself when a new version is out.
Pick a plan in hiSAI or on ai.fortax.in. Your skills, client folders and settings stay exactly as they are. If you do not pick a plan, nothing is charged.
Download, sign in, and hand it this month's GSTR-1.