Company lists · Data refreshed August 2026
Top 9 Accounting outsourcing firms based in Slovenia
There are 25 accounting outsourcing firms headquartered in Slovenia (RevenueBase, August 2026). RevenueBase tracks 167 professional contacts across them, including 70 with verified work emails and 2 with mobile numbers. Ljubljana is the largest hub.
This list covers accounting outsourcing 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 August 30, 2026.
The 9 largest accounting outsourcing firms based in Slovenia
Ranked by team size| # | Company | Verified emails |
|---|---|---|
| 1 | “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 Aug 30, 2026Thanks. The Data Team will review it. | 52 |
| 2 | “Contall d.o.o.” Source: company website · checked Aug 30, 2026Thanks. The Data Team will review it. | 4 |
| 3 | “Računovodstvo je veliko več kot le številke – pri nas je to partnerstvo, podpora in pot do boljših poslovnih odločitev.” Source: company website · checked Aug 30, 2026Thanks. The Data Team will review it. | 3 |
| 4 | “Simfin je računovodski servis, katerega vizija je v prvi vrsti zadovoljstvo strank.” Source: company website · checked Aug 30, 2026Thanks. The Data Team will review it. | 2 |
| 5 | “Smo računovodski servis s 35-letno tradicijo, ki podjetjem zagotavlja zanesljivo računovodstvo, davčno podporo in poslovno svetovanje.” Source: company website · checked Aug 30, 2026Thanks. The Data Team will review it. | 2 |
| 6 | “If you are small business owner and you are looking for an accounting company in Slovenia - you are at the right place.” Source: company website · checked Aug 30, 2026Thanks. The Data Team will review it. | 2 |
| 7 | “Vectigalis LLC is a company that provides financial, tax, business consulting, accounting and bookkeeping services.” Source: company website · checked Aug 30, 2026Thanks. The Data Team will review it. | 2 |
| 8 | “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 Aug 30, 2026Thanks. The Data Team will review it. | 2 |
| 9 | “We perform all accounting work, offer tax and business consulting.” Source: company website · checked Aug 30, 2026Thanks. The Data Team will review it. | 1 |
Showing 9 of 25 accounting outsourcing firms based in Slovenia
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Accounting outsourcing firms based in Slovenia at a glance
As of Aug 30, 2026Companies by employee count
Accounting outsourcing firms by metro
| Metro | Companies |
|---|---|
| Accounting outsourcing firms in Ljubljana | 4 |
| Accounting outsourcing firms in Novo Mesto | 3 |
| Accounting outsourcing firms in Maribor | 2 |
| Accounting outsourcing firms in Ljubljana Slo | 1 |
| Accounting outsourcing firms in Skofja Loka Skofja Loka | 1 |
| Accounting outsourcing firms in Nova Gorica | 1 |
| Accounting outsourcing firms in Zalec | 1 |
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 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: 21.3 million companies and 398.9 million professional contacts resolved from primary sources.
- What qualifies
- Companies headquartered in Slovenia whose own description of what they do matches “accounting outsourcing 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 accounting outsourcing 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.
- 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, 70 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 August 30, 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
How many accounting outsourcing firms are there based in Slovenia?
There are 25 accounting outsourcing firms headquartered in Slovenia as of August 2026 (RevenueBase).
What is the largest company on this list?
Unija ETL Accounting Slovenija, headquartered in Brezovica Pri Ljubljani, tops this list with the largest team on record.
Which city has the most accounting outsourcing firms?
Ljubljana leads with 4 headquartered companies, followed by Novo Mesto (3) and Maribor (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 70 verified decision-maker contacts tracked across these 25 companies.
How current is this list?
The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on August 30, 2026.
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About this data
RevenueBase is a B2B contact data platform. Its company graph covers 21.3 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, the same data that powers RevenueBase's B2B data products and the free research portal.
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