Company lists · Data refreshed September 2026

Top 25 Outsourcing accounting firms based in Greece

Name: Outsourcing accounting firms based in Greece
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 21, 2026 146 companies tracked

RevenueBase identified 146 outsourcing accounting firms headquartered in Greece as of September 2026 and tracks 740 professional contacts across them, including 193 with verified work emails. Athens is the largest hub.

This list covers outsourcing accounting firms 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 21, 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 21, 2026 86% judged on-target in blind review

146Companies

740Contacts tracked

193Verified emails

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The 25 largest outsourcing accounting firms based in Greece

Ranked by team size

Top 25 of 146 outsourcing accounting firms based in Greece, ranked by team size, largest first. Data refreshed Sep 21, 2026. RevenueBase Smart Search rates how each company's information relates to outsourcing accounting firms: 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.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	Fovera Prostasia S.A	Partial evidence	Athens, GreeceHQ checked Sep 21, 2026	51-200	116 contacts →
	Partial evidence “Accounting - Taxation - Business Consulting OUR COMPANY Following many years of activity, Fovera Prostasia S.A.” Source: RevenueBase Database · checked Sep 21, 2026
2	Computax S.A	Indirect evidence	Kallithea, GreeceHQ checked Sep 21, 2026	11-50	28 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 21, 2026
3	C&a Certified Public Accountants	Indirect evidence	Kallithea, GreeceHQ checked Sep 21, 2026	11-50	18 contacts →
	Indirect evidence “C&A was established in Athens in 2015.” Source: RevenueBase Database · checked Sep 21, 2026
4	Prooptiki SA	Partial evidence	Athens, GreeceHQ checked Sep 21, 2026	11-50	18 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 21, 2026
5	Taxstore Consulting	Partial evidence	Cholargos, GreeceHQ checked Sep 21, 2026	11-50	15 contacts →
	Partial evidence “Corporate Consulting Services/Accounting Outsourced Services/Payroll Outsourced Services/Tax Planning” Source: RevenueBase Database · checked Sep 21, 2026
6	Seretis Accounting	Partial evidence	Athens, GreeceHQ checked Sep 21, 2026	11-50	13 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 21, 2026
7	Gnosi TAX & Accounting Experts	Partial evidence	Pylaia - Chortiatis, GreeceHQ checked Sep 21, 2026	11-50	12 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 21, 2026
8	KM Services Accounting & Consulting	Indirect evidence	Nea Smirni, GreeceHQ checked Sep 21, 2026	1-10	12 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 21, 2026
9	Spatiotis	Indirect evidence	Chaidari, GreeceHQ checked Sep 21, 2026	11-50	11 contacts →
	Indirect evidence “Λογιστής Λογιστική εταιρεία Σύμβουλος επιχειρήσεων Εφοριακός Αποτιμητής Φοροτεχνικός Chartered accountant Χρηματοποικονομικός σύμβουλος Γραφείο διεκπεραιώσης φορολογικών δηλώσεων…” Source: RevenueBase Database · checked Sep 21, 2026
10	Προβλεψη Α.Ε	Indirect evidence	Thessaloniki, GreeceHQ checked Sep 21, 2026	11-50	11 contacts →
	Indirect evidence “Η Β.Κ.” Source: RevenueBase Database · checked Sep 21, 2026
11	Olympia Certified And Registered Auditors S.A	Indirect evidence	Athens, GreeceHQ checked Sep 21, 2026	11-50	10 contacts →
	Indirect evidence “OLYMPIA AUDITORS S.A.” Source: RevenueBase Database · checked Sep 21, 2026
12	Γραφειο Ψαριανου Α.Ε	Partial evidence	Athens, GreeceHQ checked Sep 21, 2026	11-50	8 contacts →
	Partial evidence “Taxation, Audit & Accounting Business Consultants Firm PSARIANOS S.A.” Source: RevenueBase Database · checked Sep 21, 2026
13	KKP Group	Indirect evidence	Athens, GreeceHQ checked Sep 21, 2026	11-50	8 contacts →
	Indirect evidence “Ο όμιλος ΚΚΡ (Koumarianos-Kontaridis Partners), είναι ένας δυναμικός όμιλος εταιρειών Οικονομικής Επιχειρησιακής Διαχείρισης.” Source: RevenueBase Database · checked Sep 21, 2026
14	Aegean Consulting Group	Partial evidence	Athens, GreeceHQ checked Sep 21, 2026	11-50	8 contacts →
	Partial evidence “We solve all your consulting and accounting issues Having in its human resources experienced and specialized accountants Aegean Consulting Group provides high level accounting…” Source: RevenueBase Database · checked Sep 21, 2026
15	Privel Partners	Indirect evidence	Athens, GreeceHQ checked Sep 21, 2026	11-50	7 contacts →
	Indirect evidence “From entrepreneurial start-ups to major multinational corporations, the businesses we work for have a strong belief that, whatever the market, supremely well managed structures…” Source: RevenueBase Database · checked Sep 21, 2026
16	Certus Accounting	Indirect evidence	Athens, GreeceHQ checked Sep 21, 2026	11-50	7 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 21, 2026
17	Metron TAX S.A	Indirect evidence	Thessaloniki, GreeceHQ checked Sep 21, 2026	1-10	6 contacts →
	Indirect evidence “Το όραμά μας είναι η παροχή άριστης ποιότητας υπηρεσιών φοροτεχνικής και λογιστικής κάλυψης των επιχειρήσεων, που επιτυγχάνεται με την στενή συνεργασία και προσωπική επαφή με την…” Source: RevenueBase Database · checked Sep 21, 2026
18	Samaras	Indirect evidence	Νέα Φιλαδέλφεια, GreeceHQ checked Sep 21, 2026	11-50	6 contacts →
	Indirect evidence “Από το 2009 το λογιστικό γραφείο «ΧΑΡΑΛΑΜΠΟΣ ΣΑΜΑΡΑΣ ΙΚΕ» μαζί με το κατάλληλο ανθρώπινο δυναμικό εξυπηρετεί πλήθος επιχειρήσεων με κύριο μέλημα την εκπλήρωση των λογιστικών και…” Source: RevenueBase Database · checked Sep 21, 2026
19	Capa Epsilon OSP	Partial evidence	Athens, GreeceHQ checked Sep 21, 2026	1-10	6 contacts →
	Partial evidence “CapaEpsilon OSP® was established in 2015 as an accounting and tax consultancy company.” Source: RevenueBase Database · checked Sep 21, 2026
20	Opex SA	Partial evidence	Kholargós, GreeceHQ checked Sep 21, 2026	1-10	5 contacts →
	Partial evidence “Founded in Greece in 2018, Operational Excellence SA is an innovative consulting company specializing in online accounting and tax services.” Source: RevenueBase Database · checked Sep 21, 2026
21	Taxinheaven Accounting Firm	Indirect evidence	GreeceHQ checked Sep 21, 2026	11-50	5 contacts →
	Indirect evidence “We provide the solutions to ensure you have access to this information when needed.” Source: RevenueBase Database · checked Sep 21, 2026
22	Ehorizons Finance & B.I. Solutions	Partial evidence	Patra, GreeceHQ checked Sep 21, 2026	1-10	4 contacts →
	Partial evidence “With over 30 years of industry expertise, our financial and accounting company is dedicated to unlocking financial excellence for businesses of all sizes.” Source: RevenueBase Database · checked Sep 21, 2026
23	AFS Αδαμόπουλος Λογιστική	Indirect evidence	Αθηνα, GreeceHQ checked Sep 21, 2026	1-10	4 contacts →
	Indirect evidence “Είμαστε η AFS Αδαμόπουλος,Λογιστική Εταιρεία με 25 έτη παρουσίας στον χώρο, πιστοποιημένη με τάξη Α' έχοντας αναπτύξει ένα ευρύ φάσμα Λογιστικών, Φορολογικών και Εργατικών…” Source: RevenueBase Database · checked Sep 21, 2026
24	Accountable NNN Quality Services	Indirect evidence	Neos Kosmos, GreeceHQ checked Sep 21, 2026	1-10	4 contacts →
	Indirect evidence “A2N3 is a company focused on providing quality professional services.” Source: RevenueBase Database · checked Sep 21, 2026
25	Mouzakis Taxing And Beyond	Partial evidence	Piraeus, GreeceHQ checked Sep 21, 2026	11-50	3 contacts →
	Partial evidence “For more than 30 years we have managed to meet the needs of enterprises, who increasingly assign their accounting related needs in Outsourced Tax Consultants - Accountants.” Source: RevenueBase Database · checked Sep 21, 2026

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: outsourcing accounting 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 outsourcing accounting firms.
Partial evidence: Its own public description names part of outsourcing accounting firms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name outsourcing accounting 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 146 outsourcing accounting firms based in Greece

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Outsourcing accounting firms based in Greece at a glance

As of Sep 21, 2026

26.1%Verified-email coverage

5.1Average contacts per company

1-10Median size (employees)

26.7%Largest-city concentration · Athens

Sep 21, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

Email recency for this list is measured worldwide rather than for Greece, so it is reported there. Company counts and contact totals on this page are exact for Greece, over 146 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 outsourcing accounting 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 Greece whose own description of what they do matches “outsourcing accounting 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 outsourcing accounting 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 outsourcing accounting firms, 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, 193 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 21, 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.

Outsourcing accounting firms by metro

Outsourcing accounting firms in Athens39

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 outsourcing accounting 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 outsourcing accounting firms are there based in Greece?

RevenueBase identified 146 outsourcing accounting firms 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 outsourcing accounting firms?

Athens leads with 39 headquartered companies, followed by Thessaloniki (7) 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 193 verified decision-maker contacts tracked across these 146 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 21, 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.