Company lists · Data refreshed September 2026
Top 25 Professional services firms based in Slovenia
RevenueBase identified 69 professional services firms headquartered in Slovenia as of September 2026 and tracks 401 professional contacts across them, including 164 with verified work emails and 7 with mobile numbers. Ljubljana is the largest hub.
This list covers professional services firms headquartered in Slovenia, 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, how directly it supports the match, and when it was last checked. Data refreshed September 5, 2026.
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.
The 25 largest professional services firms based in Slovenia
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 78 | ||||
“Unija ETL is a premier international accounting firm offering top-tier services in accounting, payroll processing, IT, and consultancy across more than 55 countries globally.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 2 | 72 | ||||
“KPMG has been present in Slovenia for almost 30 years.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 3 | 21 | ||||
“Tax, finance, accounting, legal and IT consulting company, based in Ljubljana, Slovenia.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 4 | 12 | ||||
“Offering comprehensive services in financial, business, legal, tax, and digital transformation consulting.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 5 | 11 | ||||
“Kot ponudnik računovodskih, davčnih in delovnopravnih storitev moramo biti ne le strokoven, temveč tudi zaupanja vreden partner.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 6 | 6 | ||||
“Contall d.o.o.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 7 | Mazars In SloveniaIndirect evidence | 5 | |||
“Audit • Tax • Accounting • Payroll • Financial advisory • IT Advisory and assurance • ESG & Sustainability Mazars is a leading international audit, tax and advisory firm.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 8 | 5 | ||||
“Odvetniška družba Lukman is an independent law firm based in Slovenia offering in-depth knowledge of the local legal environment combined with cross-border expertise.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 9 | 5 | ||||
“BV Finance Group d.o.o is a group of professionals with extensive international experience in the following areas: FINANCIAL CONSULTING We offer comprehensive financial consulting…” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 10 | 5 | ||||
Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 11 | 5 | ||||
“We are a reputable, fast growing company with a successful business tradition since 2003.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 12 | 4 | ||||
“Smo mlado, hitro rastoče podjetje, ki osnovni poudarek dajemo zaupanju in sodelovanju s poslovnimi partnerji.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 13 | 4 | ||||
“Računovodstvo je veliko več kot le številke – pri nas je to partnerstvo, podpora in pot do boljših poslovnih odločitev.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 14 | 4 | ||||
“V Pisarna Kovač verjamemo, da je temelj uspešnega poslovanja jasen in zanesljiv finančni nadzor.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 15 | 4 | ||||
Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 16 | 3 | ||||
“Smo računovodski servis s 35-letno tradicijo, ki podjetjem zagotavlja zanesljivo računovodstvo, davčno podporo in poslovno svetovanje.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 17 | 3 | ||||
“Simfin je računovodski servis, katerega vizija je v prvi vrsti zadovoljstvo strank.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 18 | 3 | ||||
“Naše podjetje nudi celovite računovodske, finančne, poslovne ter davčne in pravne svetovalne storitve, usmerjene v optimizacijo in skladnost vašega poslovanja.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 19 | 3 | ||||
“Strokovnjaki v podjetjih Advico in Advico FRK poskrbimo za vse tisto, kar vaše podjetje potrebuje za uspeh na hitro spreminjajočem se sodobnem trgu, kjer sta konkurenčnost in…” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 20 | 2 | ||||
“Uveljavljeno računovodsko podjetje z dolgoletno tradicijo, ki svojim partnerjem nudi celovito finančno podporo tako s področja računovodstva kot tudi črpanja nepovratnih sredstev…” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 21 | 2 | ||||
“Vectigalis LLC is a company that provides financial, tax, business consulting, accounting and bookkeeping services.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 22 | 2 | ||||
“http://loris.si Our company offers you a broad range of audit, consulting, financial advisory, risk and tax services.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 23 | 2 | ||||
“GABERŠČIK Law Firm, we value trust above all.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 24 | 2 | ||||
“Pomagamo vam premagovati poslovne izzive!” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 25 | LAW Firm Sibinčič Križanec NovakIndirect evidence | 1 | |||
“Law Firm Sibincic Krizanec is a business and corporate law firm based in Ljubljana, Slovenia.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
Showing 25 of 69 professional services firms based in Slovenia
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Professional services firms based in Slovenia at a glance
As of Sep 5, 2026Companies by employee count
Verified emails by last verification
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 professional services firms, so some rows will be adjacent to the category rather than pure plays. The description and evidence 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 SmartSearch, the natural-language company search available to every RevenueBase user.
- What qualifies
- Companies headquartered in Slovenia whose own description of what they do matches “professional services firms”. Matching reads each company's description, not its industry code or its name.
- What we exclude
- Companies whose own description does not clearly place them among professional services firms, and records with no verified work email. Companies headquartered outside Slovenia 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 an evidence 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, 164 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 5, 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.
Professional services firms by metro
- Professional services firms in Ljubljana29
Frequently asked
How many professional services firms are there based in Slovenia?
RevenueBase identified 69 professional services firms headquartered in Slovenia 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?
Unija Smart Accounting Slovenija, headquartered in Brezovica Pri Ljubljani, tops this list with the largest team on record.
Which city has the most professional services firms?
Ljubljana leads with 29 headquartered companies, followed by Maribor (3) and Koper (2).
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 164 verified decision-maker contacts tracked across these 69 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 5, 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.
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