Company lists · Data refreshed September 2026
Top 25 Tax preparation outsourcing firms based in India
RevenueBase identified 846 tax preparation outsourcing firms headquartered in India as of September 2026 and tracks 9,182 professional contacts across them, including 2,134 with verified work emails. Ahmedabad is the largest hub.
This list covers tax preparation outsourcing firms headquartered in India, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Every row shows the company's own description, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 29, 2026.
Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase Smart Search, the natural-language company search RevenueBase customers use to build their own targeted lists and unlock verified emails and direct dials at the companies on them. How these lists are built and judged.
The 25 largest tax preparation outsourcing firms based in India
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 628 contacts → | ||||
Partial evidence “KMK Ventures is a leading Outsourced Accounting & Tax solutions company providing services to clients based out of USA.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 2 | 474 contacts → | ||||
Strong evidence “Global FPO is an Accounting, Bookkeeping and Tax Consulting, and outsourcing company that helps CPAs, accounting firms, small and mid-sized businesses, and startups strengthen…” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 3 | 294 contacts → | ||||
Partial evidence “Founded in 2007, Buchprufer Consultants has grown into a trusted and reputed outsourcing partner delivering high-quality financial and professional services.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 4 | 256 contacts → | ||||
Strong evidence “Providing tax preparation products and solutions to the accounting profession to increase productivity.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 5 | 243 contacts → | ||||
Partial evidence “Virtual Clone is a leading provider of accounting outsourcing services, tailored specifically for ACCA/FCCA and Chartered Accountancy firms in the UK and Australia.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 6 | 243 contacts → | ||||
Partial evidence “Indian tax laws are a maze of deadlines, exemptions and penalties, making it difficult for the taxpayer to file their ITR.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 7 | 240 contacts → | ||||
Strong evidence “Welcome to TaxBuddy, your one-stop solution for all your tax preparation and filing needs- happy users across 2600 towns in India - 4.9 star Google rating from customers - Led by…” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 8 | 201 contacts → | ||||
Indirect evidence “Inventyv Software Services Pvt.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 9 | 195 contacts → | ||||
Strong evidence “Aone is one of the leading global accounting, bookkeeping, tax and year end accounts preparation service provider in India.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 10 | 180 contacts → | ||||
Partial evidence “H&R Block Hyderabad is a capability center providing tax, bookkeeping and technology services to our parent company, H&R Block, Inc (ticker: HRB).” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 11 | 114 contacts → | ||||
Indirect evidence “We’re a decade-strong offshore accounting firm based in India, trusted by businesses in the US, UK, Australia, and UAE.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 12 | 98 contacts → | ||||
Indirect evidence “We add value to CFO’s and Accounts Team by solving following problems and more through our value added services: Subjectivity (or favoritism) in transaction processing Delay in…” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 13 | 96 contacts → | ||||
Indirect evidence “VNC Global is a leading offshore bookkeeping solutions provider supporting businesses across the Globe.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 14 | 95 contacts → | ||||
Indirect evidence “We provide excellence because you deserve the best.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 15 | 92 contacts → | ||||
Indirect evidence “Ventura Pranas is a cross-border advisory firm providing specialised solutions to individuals and companies across the US, India, and Singapore.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 16 | 79 contacts → | ||||
Partial evidence “SBS Global, powered by a team of 150+ employees, is an ISO 9001:2015 & ISO 27001:2013 certified Financial Accounting Outsourcing (FAO) and consulting company led by experienced…” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 17 | 76 contacts → | ||||
Partial evidence “We are full-service firm focuses in domain of Business Setup in India, FEMA, Expatriates Taxation, Accounting outsourcing, International Taxation, Auditing, Transaction advisory…” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 18 | 75 contacts → | ||||
Indirect evidence “HSCo is a multi-disciplinary professional service firm serving in India for over 40 years.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 19 | 70 contacts → | ||||
Strong evidence “Virtual Accounting Solution LLP (VASL) is knowledge driven, highly reliable and technically advanced accounting outsourcing company offering bookkeeping, accounting, tax returns…” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 20 | 66 contacts → | ||||
Partial evidence “Especia Associates LLP is a group of qualified professionals providing highly customized and efficient financial advice to various organizations on Income Tax Returns, Internal…” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 21 | 49 contacts → | ||||
Partial evidence “Safebooks Global is driven to provide assured outsourcing & offshoring services to Accountants, CPA firms and Business owners.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 22 | 44 contacts → | ||||
Indirect evidence “AccountsBytes believes in INTACT a.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 23 | 44 contacts → | ||||
Strong evidence “We are a professional accounting and taxation outsourcing firm providing dedicated support to Australian and New Zealand Public Practicing firms and Registered Tax Agents.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 24 | 41 contacts → | ||||
Indirect evidence “IndianMuneem (A division of Aeren IT solutions Pvt.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 25 | 40 contacts → | ||||
Indirect evidence “FuturePro Global works with a wide number of clients from different industries across the globe as our clients’ preferred partner to help them drive change and growth.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
RevenueBase Smart Search
RevenueBase Smart Search assesses information from a company’s LinkedIn profile, information supplied directly by the company, its website, and other publicly available sources. It uses that information to rate how closely the company relates to this list’s category: tax preparation outsourcing firms. Every row carries its rating and the description the rating was read from, so each one can be checked rather than taken on trust.
- Strong evidence
- The company's own public description of its business names tax preparation outsourcing firms.
- Partial evidence
- Its own public description names part of tax preparation outsourcing firms, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name tax preparation outsourcing firms. The match rests on the rest of the company's public profile rather than the one sentence quoted here, so this is the rating to check first.
RevenueBase Smart Search is how these lists are built: RevenueBase's data engine and AI assemble the companies that match a category defined in a user's own words, so a list can be about what companies actually do rather than about whichever industry code they were filed under.
Showing 25 of 846 tax preparation outsourcing firms based in India
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Tax preparation outsourcing firms based in India at a glance
As of Sep 29, 2026Companies by employee count
Email recency for this list is measured worldwide rather than for India, so it is reported there. Company counts and contact totals on this page are exact for India, over 846 companies.
How this list was built
Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among tax preparation outsourcing firms, so some rows will be adjacent to the category rather than pure plays. The description and RevenueBase Smart Search rating on every row are there so you can check each match yourself.
- Source
- The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase Smart Search, the natural-language company search available to every RevenueBase user.
- What qualifies
- Companies headquartered in India whose own description of what they do matches “tax preparation outsourcing firms”. Matching reads each company's description, not its industry code or its name.
- RevenueBase Smart Search
- RevenueBase Smart Search is how this list is assembled and how each row is rated. RevenueBase's data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to a category defined in a user's own words. Each row is rated strong evidence (its own description names tax preparation outsourcing firms), partial evidence (it names part of the category) or indirect evidence (the description shown names none of it and the match rests on the rest of the company's profile). The description supporting each rating is quoted on the row.
- What we exclude
- Companies whose own description does not clearly place them among tax preparation outsourcing firms, and records with no verified work email. Companies headquartered outside India are excluded even when they keep an office there.
- Match quality
- In blind human judging of this matching method, 86% of matched companies were on target. Expect roughly 1 in 7 rows to be adjacent to the category rather than a pure play. Every row shows the company's own description and its RevenueBase Smart Search rating so you can judge each match yourself. Read the full methodology: how the lists are built, how the judging worked, and what the figure means.
- Ranking
- Team size, largest first: companies are ordered by the number of professionals RevenueBase tracks at each one. Employee ranges shown are reported bands, for context.
- Verification
- Every listed company carries at least one verified work email, 2,134 across the full list. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
- Refresh
- This page's figures were pulled from the company graph on September 29, 2026. Lists refresh periodically as the graph is re-checked.
- Corrections
- Wrong category, wrong headquarters, or a company that has closed? Use “Report an issue” on any row. Reports go to the RevenueBase Data Team and feed back into the company graph.
Tax preparation outsourcing firms by metro
Frequently asked
What is RevenueBase Smart Search?
RevenueBase Smart Search is how RevenueBase decides which companies belong on this list and how strongly each one fits. Its data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to the category the list is about. Each row is rated strong evidence when the company's own description names tax preparation outsourcing firms, partial evidence when it names part of the category, and indirect evidence when the description shown names none of it and the match rests on the rest of the company's profile.
How many tax preparation outsourcing firms are there based in India?
RevenueBase identified 846 tax preparation outsourcing firms headquartered in India as of September 2026, matched on each company's own description of what it does rather than its industry code.
What is the largest company on this list?
KMK, headquartered in Ahmedabad, tops this list with the largest team on record.
Which city has the most tax preparation outsourcing firms?
Ahmedabad leads with 108 headquartered companies, followed by New Delhi (66) and Bangalore (52).
How do I get contact information for these companies?
A free RevenueBase account lets you run this exact search and work the top results, verified emails and direct dials included. Upgrading unlocks all 2,134 verified decision-maker contacts tracked across these 846 companies.
How current is this list?
The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 29, 2026.
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About this data
RevenueBase is a B2B data infrastructure company. Its company graph covers 60 million companies and 398.9 million professional contacts, with emails verified on a rolling cadence rather than scraped once and left to decay. These company lists are generated directly from that graph with RevenueBase Smart Search, the same natural-language company search every RevenueBase user has: describe a market in plain words, get the companies that match, and add verified emails and direct dials for the people at them. It is the same data that powers RevenueBase's B2B data products, and a free account includes 500 credits to start. How these lists are built and judged.
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