Company lists · Data refreshed September 2026

Top 25 Accounting firm business process outsourcing companies based in Greece

RevenueBase identified 259 accounting firm business process outsourcing companies headquartered in Greece as of September 2026 and tracks 1,299 professional contacts across them, including 296 with verified work emails and 29 with mobile numbers. Athens is the largest hub.

This list covers accounting firm business process outsourcing companies headquartered in Greece, 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 27, 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.

How to read this list HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 27, 2026 86% judged on-target in blind review
259Companies
1,299Contacts tracked
296Verified emails
29Mobile numbers
Explore this list → Free signup · no credit card · 500 free credits

The 25 largest accounting firm business process outsourcing companies based in Greece

Ranked by team size
Top 25 of 259 accounting firm business process outsourcing companies based in Greece, ranked by team size, largest first. Data refreshed Sep 27, 2026. RevenueBase Smart Search rates how each company's information relates to accounting firm business process outsourcing companies: strong evidence (its own description names it), partial (names part of it), indirect (matched on the rest of its profile rather than the description shown). Click a contact count to view that company's people.
#CompanyRevenueBase Smart SearchHeadquartersEmployeesContacts
1Partial evidenceAthens, GreeceHQ checked Sep 27, 202651-200116 contacts →

Partial evidence

“Accounting - Taxation - Business Consulting OUR COMPANY Following many years of activity, Fovera Prostasia S.A.”

Source: RevenueBase Database · checked Sep 27, 2026
2Partial evidencePylaia, GreeceHQ checked Sep 27, 202611-5030 contacts →

Partial evidence

“is a Tax, Accounting, and Consulting Company that has its origin in Greece and is expanded internationally.”

Source: RevenueBase Database · checked Sep 27, 2026
3Indirect evidenceMaroussi, GreeceHQ checked Sep 27, 202611-5029 contacts →

Indirect evidence

“tgs (Hellas) is the brand under which experienced professionals collaborate to provide integrated business services, audit, consulting, financial advisory, tax, compliance, legal…”

Source: RevenueBase Database · checked Sep 27, 2026
4Indirect evidenceKallithea, GreeceHQ checked Sep 27, 202611-5028 contacts →

Indirect evidence

“Στην Computax, είμαστε αφοσιωμένοι στην παροχή εξαιρετικών λογιστικών υπηρεσιών που ενδυναμώνουν τις επιχειρήσεις να επιτύχουν τους οικονομικούς τους στόχους.”

Source: RevenueBase Database · checked Sep 27, 2026
5Partial evidenceAthens, GreeceHQ checked Sep 27, 202611-5025 contacts →

Partial evidence

“Kleopas Alliott Business Consultants is an independent leading Accounting firm in Greece since 1990, with an innovative international orientation and a unique client focus service…”

Source: RevenueBase Database · checked Sep 27, 2026
6Indirect evidenceKallithea, GreeceHQ checked Sep 27, 202611-5018 contacts →

Indirect evidence

“C&A was established in Athens in 2015.”

Source: RevenueBase Database · checked Sep 27, 2026
7Partial evidenceAthens, GreeceHQ checked Sep 27, 202611-5018 contacts →

Partial evidence

“Prooptiki was established as an accounting firm back in 1984; today, it is one of the most successful companies in the economic sector, providing consultation on accounting-tax…”

Source: RevenueBase Database · checked Sep 27, 2026
8Indirect evidenceIrakleio, GreeceHQ checked Sep 27, 202611-5016 contacts →

Indirect evidence

“Orion is a modern company of chartered accountants, with structures adapted to the requirements of today.”

Source: RevenueBase Database · checked Sep 27, 2026
9Partial evidenceCholargos, GreeceHQ checked Sep 27, 202611-5015 contacts →

Partial evidence

“Corporate Consulting Services/Accounting Outsourced Services/Payroll Outsourced Services/Tax Planning”

Source: RevenueBase Database · checked Sep 27, 2026
10Indirect evidencePeiraias, GreeceHQ checked Sep 27, 202611-5015 contacts →

Indirect evidence

“SaaS Consulting & Analog SA in their present form operate since early 2006.”

Source: RevenueBase Database · checked Sep 27, 2026
11Partial evidenceAthens, GreeceHQ checked Sep 27, 202611-5013 contacts →

Partial evidence

“Seretis Accounting has built a strong reputation as a trusted business and tax consultant over the past 20 years.”

Source: RevenueBase Database · checked Sep 27, 2026
12Partial evidencePylaia - Chortiatis, GreeceHQ checked Sep 27, 202611-5012 contacts →

Partial evidence

“Gnosi Tax & Accounting Experts” is an accounting and tax services provider company for entities of any size and any field of the global economy.”

Source: RevenueBase Database · checked Sep 27, 2026
13Partial evidenceAyia Paraskevi, GreeceHQ checked Sep 27, 202611-5012 contacts →

Partial evidence

“JPA Audit Greece is a firm of Certified Public Accountants and Business Advisors, member of the Institute of Certified Public Accountants of Greece and the Accounting and Auditing…”

Source: RevenueBase Database · checked Sep 27, 2026
14Indirect evidenceNea Smirni, GreeceHQ checked Sep 27, 20261-1012 contacts →

Indirect evidence

“Η εταιρία μας στελεχωμένη με κατηρτισμένους συνεργάτες προσφέρει ολοκληρωμένες λογιστικές, φοροτεχνικές και συμβουλευτικές υπηρεσίες σε κάθε ενδιαφερόμενο φυσικό ή νομικό πρόσωπο.”

Source: RevenueBase Database · checked Sep 27, 2026
15Indirect evidenceThessaloniki, GreeceHQ checked Sep 27, 20261-1011 contacts →

Indirect evidence

“Alpha Auditors" is a fast-growing company specializing in providing audit, consulting and tax services.”

Source: RevenueBase Database · checked Sep 27, 2026
16Indirect evidenceChaidari, GreeceHQ checked Sep 27, 202611-5011 contacts →

Indirect evidence

“Λογιστής Λογιστική εταιρεία Σύμβουλος επιχειρήσεων Εφοριακός Αποτιμητής Φοροτεχνικός Chartered accountant Χρηματοποικονομικός σύμβουλος Γραφείο διεκπεραιώσης φορολογικών δηλώσεων…”

Source: RevenueBase Database · checked Sep 27, 2026
17Indirect evidenceThessaloniki, GreeceHQ checked Sep 27, 202611-5011 contacts →

Indirect evidence

“Η Β.Κ.”

Source: RevenueBase Database · checked Sep 27, 2026
18Partial evidenceAthens, GreeceHQ checked Sep 27, 202611-5010 contacts →

Partial evidence

“TMS Certified Public Accountants S.A is an independent firm established in Greece, providing a broad range of audit & assurance, tax, business advisory and accounting services.”

Source: RevenueBase Database · checked Sep 27, 2026
19Indirect evidenceAthens, GreeceHQ checked Sep 27, 202611-5010 contacts →

Indirect evidence

“OLYMPIA AUDITORS S.A.”

Source: RevenueBase Database · checked Sep 27, 2026
20Indirect evidenceKifisia, GreeceHQ checked Sep 27, 202611-5010 contacts →

Indirect evidence

“DFK PD AUDIT S.A.”

Source: RevenueBase Database · checked Sep 27, 2026
21Indirect evidenceElliniko - Argyroupoli, GreeceHQ checked Sep 27, 202611-509 contacts →

Indirect evidence

“Ef Audit A.E.”

Source: RevenueBase Database · checked Sep 27, 2026
22Indirect evidenceNéa Ionía, GreeceHQ checked Sep 27, 20261-108 contacts →

Indirect evidence

“Founded in 2019, with headquarters in Larissa and offices in Athens and Thessaloniki, FiveB is a growing firm of chartered accountants offering bespoke audit, tax, advisory, and…”

Source: RevenueBase Database · checked Sep 27, 2026
23Indirect evidenceThessaloniki, GreeceHQ checked Sep 27, 202611-508 contacts →

Indirect evidence

“SEREFIDIS & PARTNERS is a firm providing tax and financial consulting services.”

Source: RevenueBase Database · checked Sep 27, 2026
24Partial evidenceAthens, GreeceHQ checked Sep 27, 202611-508 contacts →

Partial evidence

“Taxation, Audit & Accounting Business Consultants Firm PSARIANOS S.A.”

Source: RevenueBase Database · checked Sep 27, 2026
25Indirect evidenceAthens, GreeceHQ checked Sep 27, 202611-508 contacts →

Indirect evidence

“Ο όμιλος ΚΚΡ (Koumarianos-Kontaridis Partners), είναι ένας δυναμικός όμιλος εταιρειών Οικονομικής Επιχειρησιακής Διαχείρισης.”

Source: RevenueBase Database · checked Sep 27, 2026

Showing 25 of 259 accounting firm business process outsourcing companies based in Greece

See the full list, filter by size, metro and specialty, and get verified emails and direct dials for all 296 reachable decision-makers.

Free signup · no credit card

View the full list →

Accounting firm business process outsourcing companies based in Greece at a glance

As of Sep 27, 2026
22.8%Verified-email coverage
2.2%Mobile-number coverage
5.0Average contacts per company
1-10Median size (employees)
22.0%Largest-city concentration · Athens
Sep 27, 2026Page data refreshed

Companies by employee count

1-10
162
11-50
90
51-200
7

Freshness & accuracy

How recently the business emails were verified and the company information checked

Email last verified

Median 30.0d

Company record updated

Median 90.0d

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 accounting firm business process outsourcing companies, 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 Greece whose own description of what they do matches “accounting firm business process outsourcing companies”. 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 accounting firm business process outsourcing companies), 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 accounting firm business process outsourcing companies, and records with no verified work email. Companies headquartered outside Greece 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, 296 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 27, 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.

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 accounting firm business process outsourcing companies, 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 accounting firm business process outsourcing companies are there based in Greece?

RevenueBase identified 259 accounting firm business process outsourcing companies headquartered in Greece 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?

Fovera Prostasia S.A, headquartered in Greece, tops this list with the largest team on record.

Which city has the most accounting firm business process outsourcing companies?

Athens leads with 57 headquartered companies, followed by Thessaloniki (14) and Piraeus (4).

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 296 verified decision-maker contacts tracked across these 259 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 27, 2026.

Ready to reach these companies? Verified emails and direct dials for all 259 accounting firm business process outsourcing companies based in Greece. Start with a free account, no credit card.

Download this list →

Related lists

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.