Company lists · Data refreshed September 2026
Top 25 Accounting outsourcing service providers based in Türkiye
RevenueBase identified 148 accounting outsourcing service providers headquartered in Türkiye as of September 2026 and tracks 2,560 professional contacts across them, including 85 with verified work emails. Istanbul is the largest hub.
This list covers accounting outsourcing service providers headquartered in Türkiye, 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.
The 25 largest accounting outsourcing service providers based in Türkiye
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 54 contacts → | ||||
Indirect evidence “Vezin Yeminli Mali Müşavirlik A.Ş, uzun yıllar kamudan sonra özel sektörde Yeminli Mali Müşavirlik ve üst düzey yöneticilik yapmış Hesap Uzmanları tarafından kurulmuş olup, şirket…” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 2 | 27 contacts → | ||||
Indirect evidence “Çeşitli sektörlerde yer alan şirketlerin muhasebe, finans, denetim ve insan kaynakları departmanlarında çalışmış, 2004 yılından itibaren özellikle Teknoloji Geliştirme…” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 3 | 22 contacts → | ||||
Indirect evidence “Member of ECOVIS International.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 4 | 14 contacts → | ||||
Partial evidence “Accounthink (Mali Bakış is a professional outsourcing and advisory company based in Ankara since 23.09.2010 with professional team specialized in foreign companies with “big four”…” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 5 | 14 contacts → | ||||
Partial evidence “We are a medium-sized auditing, accounting and consultancy firm.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 6 | 14 contacts → | ||||
Partial evidence “Andersen in Turkey: Trusted Tax, Audit & Advisory for Confident Growth Andersen in Turkey helps Turkish and international businesses navigate tax, audit, accounting, and advisory…” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 7 | 11 contacts → | ||||
Indirect evidence “40 yılın üzerindeki tecrübesi beraberinde mali müşavirlik, muhasebe ve denetim hizmetleri konusunda faaliyet göstermekteyiz.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 8 | 11 contacts → | ||||
Partial evidence “TCS Lydia (A member of TCS Global) provides tax services (Tax management and accounting, transfer pricing, legal services), audit & assurance services (Independent auditing, IFRS…” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 9 | 9 contacts → | ||||
Partial evidence “CPA International Turkey (founded 2022) delivers tax, accounting, audit and consultancy services focused on accurate, timely financial information to support management decisions…” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 10 | 9 contacts → | ||||
Indirect evidence “Kapsam YMM,1995 yılından bu yana tecrübeli uzman kadrosuyla Mali Müşavirlik, İç Denetim, Vergi Denetim, Planlama, Danışmanlığı hizmetleri vermektedir.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 11 | 8 contacts → | ||||
Indirect evidence “Hakkımızda; Mefa Muhasebe olarak 2010 senesinde Türkiye'nin ve dünyanın önde gelen firmalarına muhasebe, bordro ve danışmanlık hizmetleri vermek üzere kurulduk.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 12 | 6 contacts → | ||||
Indirect evidence “Baran Özongan is a very experienced accountant on foreign direct investment companies in Turkey.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 13 | 4 contacts → | ||||
Indirect evidence “Can Bağımsız Denetim ve Yeminli Mali Müşavirlik Anonim Şirketi (YMM A.Ş.) Maliyet Muhasebesi, Finansal Raporlama, Bütçeleme, Denetim, Vergi ve Sigorta Danışmanlığı, Şirket Kuruluş…” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 14 | 4 contacts → | ||||
Indirect evidence “CYC Değer Mali Müşavirlik ve Denetim Hizmetleri olarak sayfamızda vergi mevzuatı sosyal güvenlik mevzuatı ve diğer ekonomi ve mali konular hakkında sizlere bilgilendirme yapacağız.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 15 | 4 contacts → | ||||
Indirect evidence “We provide the following services to individuals, large, medium and small businesses and other agencies in Turkey.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 16 | 3 contacts → | ||||
Indirect evidence “The increasingly competitive environment of business life and the constantly changing legal regulations have made it obligatory for companies to manage their financial affairs…” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 17 | 3 contacts → | ||||
Indirect evidence “SoHo Serbest Muhasebeci Mali Müsavirlik Limited Sirketi (SoHo Independent Accountancy and Financial Advisory Limited Company) has been established by Certified Public Accountant…” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 18 | 3 contacts → | ||||
Indirect evidence “Duman Global, konusunda uzman profesyonellerce; başta yeminli mali müşavirlik olmak üzere teşvik, vergi danışmanlığı, finans ve muhasebe, mali hukuk, kurumsal yönetim, bütçeleme…” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 19 | 3 contacts → | ||||
Partial evidence “DENKLEM Sworn-in Certified Public Accounting and AUDIT was established by Serdar TAŞDÖKEN who has worked as a Finance Inspector for a long time in the Ministry of Finance and now…” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 20 | 2 contacts → | ||||
Indirect evidence “İhtiyaç duyduğunuz tüm mali müşavirlik hizmetleri.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 21 | 2 contacts → | ||||
Partial evidence “Our office established in 2002, has been devotedly rendering financial consultancy and outsourcing services to its mainly foreign customers existing throughout Turkey, through its…” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 22 | 2 contacts → | ||||
Indirect evidence Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 23 | 1 contacts → | ||||
Indirect evidence “EUHR, kurucu ortaklarımızın 2011 yılından bu yana muhasebe, vergi denetim ve finans yönetimi alanları başta olmak üzere çeşitli sektörlerdeki uzun yıllara dayanan tecrübeleri…” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 24 | 1 contacts → | ||||
Indirect evidence “3568 Sayılı Yasası Gereği aşağıdaki işlemleri yapmaya tam yetkiliyim.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 25 | 1 contacts → | ||||
Indirect evidence “Demir Denetim ve A.Ş.| Güvenilir Mali Çözümler, Sürdürülebilir Başarı 2011 yılında kurulan Demir Denetim ve A.Ş, mali müşavirlik, finansal danışmanlık alanlarında uzmanlaşmış bir…” Source: RevenueBase Database · checked Sep 21, 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: accounting outsourcing service providers. 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 accounting outsourcing service providers.
- Partial evidence
- Its own public description names part of accounting outsourcing service providers, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name accounting outsourcing service providers. 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 148 accounting outsourcing service providers based in Türkiye
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Accounting outsourcing service providers based in Türkiye at a glance
As of Sep 21, 2026Companies by employee count
Email recency for this list is measured worldwide rather than for Türkiye, so it is reported there. Company counts and contact totals on this page are exact for Türkiye, over 148 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 accounting outsourcing service providers, 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 Türkiye whose own description of what they do matches “accounting outsourcing service providers”. 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 outsourcing service providers), 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 outsourcing service providers, and records with no verified work email. Companies headquartered outside Türkiye 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, 85 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.
Accounting outsourcing service providers by metro
- Accounting outsourcing service providers in Istanbul53
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 outsourcing service providers, 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 outsourcing service providers are there based in Türkiye?
RevenueBase identified 148 accounting outsourcing service providers headquartered in Türkiye 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?
Vezin TAX Audit Advisory, headquartered in Ankara, tops this list with the largest team on record.
Which city has the most accounting outsourcing service providers?
Istanbul leads with 53 headquartered companies, followed by Ankara (7) and Atasehir (7).
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 85 verified decision-maker contacts tracked across these 148 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.
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