Company lists · Data refreshed November 2026

Top 25 Offshore tax preparation providers worldwide

RevenueBase identified 9,260 company matches for offshore tax preparation providers worldwide as of November 2026 and tracks 116,260 professional contacts across them, including 15,855 with verified work emails. The United States is the largest market and New York the largest hub.

This list covers company matches for offshore tax preparation providers worldwide, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed November 6, 2026. Country and city lists for offshore tax preparation providers follow the table.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, 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.

How to read this list RevenueBase SmartSearch · Exact Recorded Nov 6, 2026 How this list was built
9,260Companies
116,260Contacts tracked
15,855Verified emails
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The 25 largest offshore tax preparation providers worldwide

Ranked by team size
Top 25 of 9,260 company matches for offshore tax preparation providers worldwide, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Nov 6, 2026. The RevenueBase SmartSearch column shows Exact match membership in this saved search. Click a contact count to view that company's people. Totals use company locations recorded by RevenueBase; the displayed preview is a smaller selection.
#CompanyRevenueBase SmartSearchHeadquartersEmployeesContacts
1Exact matchKansas City, MO, United StatesHQ recorded Nov 6, 202610001+64,430 contacts →

Exact match

“H&R Block’s purpose is simple: To provide help and inspire confidence in our clients and communities everywhere.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
2Exact matchAhmedabad, IndiaHQ recorded Nov 6, 20261,001-5,000829 contacts →

Exact match

“KMK Ventures is a leading Outsourced Accounting & Tax solutions company providing services to clients based out of USA.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
3Exact matchHarrow, United KingdomHQ recorded Nov 6, 2026201-500490 contacts →

Exact match

“Outbooks is a leading provider of outsourcing services to accounting and bookkeeping firms.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
4Exact matchThornleigh, AustraliaHQ recorded Nov 6, 2026501-1,000463 contacts →

Exact match

“As Australia’s largest preparer of personal income tax returns, with over 400 offices across Australia, expert help is never far away.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
5Exact matchExton, GA, United StatesHQ recorded Nov 6, 2026501-1,000386 contacts →

Exact match

“Cohesive is a leading solutions provider and systems integrator for IBM Maximo.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
6Exact matchSterling, VA, United StatesHQ recorded Nov 6, 2026201-500360 contacts →

Exact match

“Advantage One Tax Consulting is a multi-disciplinary group of highly experienced tax professionals who understand the tax practice in its true spirit, examine the issues it faces…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
7Exact matchCoral Springs, FL, United StatesHQ recorded Nov 6, 2026201-500345 contacts →

Exact match

“Unison Globus is a global accounting outsourcing and offshore staffing partner dedicated to supporting CPA firms and accounting professionals.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
8Exact matchJaipur, IndiaHQ recorded Nov 6, 2026201-500262 contacts →

Exact match

“Indian tax laws are a maze of deadlines, exemptions and penalties, making it difficult for the taxpayer to file their ITR.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
9Exact matchHouston, TX, United StatesHQ recorded Nov 6, 2026501-1,000251 contacts →

Exact match

“Growth exposes financial weakness.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
10Exact matchMumbai, IndiaHQ recorded Nov 6, 2026n/a237 contacts →

Exact match

“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…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
11Exact matchAhmedabad, IndiaHQ recorded Nov 6, 2026201-500219 contacts →

Exact match

“IMS Decimal - Your Offshore Accounting and Financial Back-office Services Provider.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
12Exact matchGhaziabad, IndiaHQ recorded Nov 6, 2026501-1,000216 contacts →

Exact match

“Aone is one of the leading global accounting, bookkeeping, tax and year end accounts preparation service provider in India.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
13Exact matchDallas, TX, United StatesHQ recorded Nov 6, 2026201-500179 contacts →

Exact match

“Infinity Globus, a Springline company, is a leading accounting outsourcing firm with over two decades of industry experience, providing tailored taxation and accounting services…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
14Exact matchBrussels, BelgiumHQ recorded Nov 6, 202651-200158 contacts →

Exact match

“Accountable frees you from the hoops and hurdles of being independent by giving you the tools you need to pay your taxes and manage your business.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
15Exact matchJaipur, NY, IndiaHQ recorded Nov 6, 202651-200155 contacts →

Exact match

“Mindspace Outsourcing, established in 2007, and offers bookkeeping outsourcing and accounting services to individuals and small to medium-sized businesses in the United States…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
16Exact matchNew York, NY, United StatesHQ recorded Nov 6, 202651-200147 contacts →

Exact match

“Konnect Books & Taxes, is an International Bookkeeping, Tax & Advisory firm, in the USA, with CPAs & Accountants, ready to help CPA firms and businesses take care of ALL their…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
17Exact matchUnited StatesHQ recorded Nov 6, 2026201-500135 contacts →

Exact match

“Expat US Tax helps US citizens and Green Card holders living and working abroad, with a focus on Australia, the UK and the Middle East.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
18Exact matchGandhinagar, IndiaHQ recorded Nov 6, 202651-200132 contacts →

Exact match

“SustainEdge Global delivers specialized offshore accounting, financial reporting, payroll, and compliance solutions to accounting firms-from large network firms to mid-sized…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
19Exact matchNoida, TX, IndiaHQ recorded Nov 6, 202651-200131 contacts →

Exact match

“We’re a decade-strong offshore accounting firm based in India, trusted by businesses in the US, UK, Australia, and UAE.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
20Exact matchDelaware, DE, United StatesHQ recorded Nov 6, 2026501-1,000128 contacts →

Exact match

“Welcome to GLOCAL Accounting.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
21Exact matchPlano, CA, United StatesHQ recorded Nov 6, 202651-200115 contacts →

Exact match

“At MyTaxFiler, we offer more than just tax preparation-we provide peace of mind.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
22Exact matchNew York, TX, United StatesHQ recorded Nov 6, 202611-50113 contacts →

Exact match

“About us- United States Certified Public Accountant with IRS e-file - Registered IRS Tax Preparer with valid PTIN for all 50 states - 10+ years experience in accounting - 5 star…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
23Exact match42-44 Bishopsgate, United KingdomHQ recorded Nov 6, 202651-200113 contacts →

Exact match

“Online Accounting Service | Bookkeeping | Payroll | Personal Tax Return Filing to HMRC | Corporation Tax Filing | HMRC ONLINE FILING: Our aim is to help small business owners` tax…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
24Exact matchChicago, MO, United StatesHQ recorded Nov 6, 2026501-1,000112 contacts →

Exact match

“Archer Lewis is your local trusted advisor for accounting and tax services.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
25Exact matchNew York, NY, United StatesHQ recorded Nov 6, 202651-200111 contacts →

Exact match

“april partners with wealth management firms, banks, and SMB platforms to embed tax filing, planning, and insights directly into the financial platforms people use every day to…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase

Showing 25 of 9,260 offshore tax preparation providers worldwide

See the full list, filter by size, metro and specialty, and access 15,855 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Offshore tax preparation providers worldwide at a glance

As of Nov 6, 2026
13.6%Verified-email coverage
12.6Average contacts per company
1-10Median size (employees)
1.4%Largest-city concentration · New York
Nov 6, 2026Page data refreshed

Companies by employee count

1-10
7,079
11-50
1,648
51-200
246
201-500
40
501-1,000
10
1,001-5,000
13
5,001-10,000
2
10001+
2

Email recency is reported on each country list linked below.

How this list was built

The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.

Source
The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase SmartSearch, the natural-language company search available to every RevenueBase user.
Coverage
Every country. Country and city lists for offshore tax preparation providers are linked below.
What qualifies
Company records worldwide whose business descriptions match “offshore tax preparation providers” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
RevenueBase SmartSearch
Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
Public preview
The public preview omits records without a verified work email. Dataset totals and geographic summaries describe the full matched records before these preview filters.
Match quality
RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
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 displayed company carries at least one verified work email. RevenueBase tracks 15,855 professional contacts with verified work emails across the full matched dataset. 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 November 6, 2026. Lists refresh periodically as the graph is re-checked.
Record context
Company records and descriptions can change. Check the company's website for its current services and locations.

Offshore tax preparation providers by location

29 lists · largest first

Every Offshore tax preparation providers list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.

Countries

Cities

Frequently asked

What is RevenueBase SmartSearch?

RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “offshore tax preparation providers”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many offshore tax preparation providers are there worldwide?

RevenueBase identified 9,260 company matches for offshore tax preparation providers worldwide as of November 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.

What is the largest company on this list?

H&r Block tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which country has the most offshore tax preparation providers?

The United States leads with 4,742 companies, followed by Canada (550) and India (478). Every offshore tax preparation providers list by country and city is linked on this page.

Which city has the most offshore tax preparation providers?

New York leads with 126 company records, followed by Houston (105) and London (104).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 15,855 professional contacts with verified work emails tracked across these 9,260 companies; direct dials are available where recorded.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on November 6, 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 SmartSearch, 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.