Company Stack is the AI-powered accounting firm that incorporates your company, closes your books, files every return, and keeps you audit-ready. One subscription. Nothing to chase.
Pvt Ltd, OPC, and LLP. Cross-border ready.
Machines handle the volume, so the work is fast and cheap; licensed CAs review and sign every filing, so it is correct, compliant, and defensible in an audit.
Your company, incorporated in days. Pvt Ltd, OPC, or LLP, fully online.
AI bookkeeping and monthly close. Books locked by the 5th, every month.
Every GST return filed on time and reconciled. Notices handled.
ROC, TDS, and statutory filings on autopilot. Nothing slips.
Statutory and internal audit by in-house CAs. Audit-ready all year.
Ask anything. "What's my GST liability this month?" answered instantly.
Everything a founder pays four different providers for, at one price.
See Company Stack OneWe are not accounting software with AI features. We are the firm itself, running on software economics: one AI-native operator absorbing work that used to sit across dozens of small practices.
Faster, transparent, and you are never waiting on the accountant. Same signatures on the same statutory forms.
They sell you a tool and you still do the work. We are the someone who does it.
Incorporation is day one of a relationship that runs your books for the life of the company.
AI-native cost, licensed CAs who can legally sign, and an auditable engine that produces a decision trace for every tax number.
Every filing reviewed and signed by a chartered accountant.
Every return on time, or we cover the penalty.
Every tax number carries a decision trace.
Published fees, no hidden charges, no surprise invoices.
Incorporated in 7 to 10 working days, fixed fee, zero hidden charges.
Start my companySLA: books closed by the 5th, or a fee credit.
Choose BooksSLA: every filing on time and CA-reviewed, or we cover the penalty.
Choose ComplianceOne price for what founders usually buy from four providers.
Choose Company Stack One