Nootus.CA
CA One
The suite overview

The operating system for tax.

CA firms today juggle multiple disconnected tools for Income Tax, TDS, GST, Books, Payroll and Practice Management. CA One becomes your firm's single operating system, where every module shares data, every workflow is connected, and every client has a dedicated AI agent powering automation.

One client, one context

Every module reads from the same unified client profile.

No exporting. No importing. No manual syncing. Everything stays in context, automatically.

DocumentsBank statementsInvoices & financial statementsCompliance historyLedger dataFiling records
This shared context enables
  • Auto-classification of transactions
  • Auto-population of forms
  • Cross-module reconciliation
  • AI-assisted drafting
  • Error detection across IT, TDS, GST, Books & Payroll
Unified workflows

Compliance that flows seamlessly across every module.

CA One connects every compliance workflow, powered by shared data and AI.

Income Tax → Books

Business income auto-computed from ledgers.

Books → GST

Sales & purchase registers auto-synced.

Books → TDS (New Forms 2025)

Ledger entries auto-mapped to new TDS form requirements.

Payroll → TDS (Salary)

Salary sheets auto-populate TDS salary schedules.

Bank statements → All modules

AI-parsed transactions feed IT, GST, TDS, Books, and Payroll.

One client. One dataset. Every module in sync.

Why CA firms choose CA One

Benefits of a single integrated platform.

Zero fragmentation

No switching between tools. No data loss. No manual syncing.

AI agents for every client

Automation tailored to each client's documents, transactions, and compliance needs.

Faster staff productivity

Unified workflows reduce time spent on repetitive tasks.

Higher accuracy

Shared context eliminates mismatches across IT, TDS, GST, Books & Payroll.

Scales without hiring

Automation handles the heavy lifting; your team focuses on review and advisory.

Direct filing platforms

TDS filing on the new TDS forms under the Income Tax Act, 2025, built in, not bolted on.

One Suite. Total Automation. Zero Fragmentation.

See how CA One unifies your entire practice under a single operating system.

Start with one module, grow into the full suite