Kolkata is where we are, and for a migration that matters more than it does for most services. Our office at 129A Bangur Avenue is a working office, so a Kolkata client can sit with the CA mapping their chart of accounts, look at the reconciliation on a screen together, and settle in an hour the questions that otherwise take a week of email. Migration is the engagement where that is worth most, because almost every difficult decision in it is a judgement call about your specific ledgers.
Trading and distribution files with deep history, long credit cycles and very high party counts, alongside manufacturing files from the leather, hosiery and jute segments carrying item masters and job work. Files of twenty years or more are common and usually include pre-GST periods.
A broad mix of long-established partnership firms and private limited companies, many of them family businesses that have been on Tally since before GST. Only the companies carry the Rule 3(1) and Rule 11(g) obligations.
The Burrabazar and Canning Street trading houses present a specific migration problem: enormous institutional knowledge held by one or two people, and a Tally file that reflects how those people think rather than any standard structure. Ledgers are named idiosyncratically, related parties are grouped by relationship rather than by accounting nature, and balances are settled by understanding rather than by document. Mapping that into a clean chart of accounts is not a technical exercise. It requires sitting with the person who built it and working out what each ledger actually represents, which is the strongest argument for doing this in the same room.
West Bengal levies professional tax, with enrolment for the entity and registration for the employer once there are salaried staff, so PT configuration carries through the migration.
One point decides more about cost than anything else on this page, and it is a compliance argument rather than a convenience one. Migrate on 1 April and the whole financial year sits in one system, so your auditor reaches a single Rule 11(g) conclusion. Cut over in December and the year is split across two systems, and the auditor has to form and report a conclusion on both, including the one you have stopped using. Assessment and clean-up typically take two to three weeks before anything can move, so a 1 April cutover is a January or February decision rather than a March one. None of this binds a proprietorship, a partnership firm or an LLP, which sit outside the audit trail regime entirely.
| Item | Position as at August 2026 |
|---|---|
| Audit trail requirement | Rule 3(1) proviso, Companies (Accounts) Rules 2014. Software must record an edit log that cannot be disabled |
| In force from | Financial years commencing on or after 1 April 2023 |
| Who it binds | Every company, including small, OPC and Section 8. Not proprietorships, partnership firms or LLPs |
| Auditor reporting | Rule 11(g). Used, operated throughout the year, not tampered with, and preserved |
| Retention | Eight financial years under section 128(5), so the Tally data cannot simply be disposed of |
| Daily backup | Rule 3(5). Servers physically located in India |
| Registrar intimation | Rule 3(6). Service provider name, IP address and location, annually with the financials |
| Zoho plan driver | GSTIN count, not turnover. Standard one, Professional two, Premium three |
| Zoho free plan | Turnover under Rs 25 lakh, one user plus an accountant, 1,000 invoices a year |
| Best cutover date | 1 April, so the financial year sits in one system |
| Package | Fee | Scope |
|---|---|---|
| Opening Balance | Rs 24,999 | Balances only, tied back to your last audited figures |
| Full Year | Rs 49,999 | One financial year of transactions, multi-GSTIN |
| Historical | Rs 99,999 | Up to three years, multi-GSTIN, inventory and parallel run |
| Additional GSTIN | Rs 2,999 each | Beyond those included in your scope |
| Additional financial year | Rs 7,999 each | Where comparative reporting needs more history |
Project fees rather than retainers, because this is a one-time engagement. For company clients the Rule 11(g) audit trail documentation, the retention position and the Rule 3(6) Registrar particulars are prepared as part of the engagement rather than charged separately. Your Zoho Books subscription is paid by you directly to Zoho.
Every price above is a professional fee, excluding GST and government charges. 50% on delivery.
All fees and charges listed are indicative only and do not constitute a binding offer. Final amounts may vary depending on the volume of work and the complexity involved.
Yes, and for Kolkata clients we recommend it. Our office is at 129A Bangur Avenue, Block A, near Reliance Smart, Kolkata 700055. Mapping is the step where a migration is decided, and it goes far faster with the person who built the Tally file in the room. Elsewhere in India we run it over scheduled calls with a named CA.
It is manageable but it is work. Pre-GST and post-GST periods in one file need separating, and ledgers created under the old indirect tax regime usually need rationalising rather than mapping across. For most businesses this is another argument for migrating opening balances only, and leaving the historical file intact for the eight-year retention you are required to maintain in any case.
By asking. There is no automated way to work out that a ledger named after a person is actually a statutory dues clearing account, and guessing produces a chart of accounts that is neat and wrong. We go through the ledger list with whoever built it, establish what each one represents in accounting terms, and map from that. It is the least glamorous part of a migration and the part that determines whether the result is usable.
Tell us what you need and a real CA calls you back, with no scripts and no transfers. Call 72783 76654. Mon - Sat, 10:00 AM - 7:00 PM IST.
Reviewed by the CA and CS Team, CorporateWalla · Last updated 17 August 2026 · · Sources: Ministry of Corporate Affairs, ICAI, Zoho Books India pricing
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