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.

25Companies
167Contacts tracked
70Verified emails
2Mobile numbers
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The 9 largest accounting outsourcing firms based in Slovenia

Ranked by team size
Top 9 of 25 accounting outsourcing firms based in Slovenia, ranked by team size, largest first. Data refreshed Aug 30, 2026. Evidence rates how directly each company's own description names accounting outsourcing firms: strong (names it), partial (names part of it), indirect (matched on its full profile rather than the summary shown). Click a count to unlock that company's people.
#CompanyHeadquartersEmployeesContactsVerified 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, 2026
Brezovica Pri Ljubljani, Slovenia51-2007952
2
Contall D.O.O. Nova GoricaIndirect evidence

“Contall d.o.o.”

Source: company website · checked Aug 30, 2026
Maribor, Slovenia11-5064
3
MOJ Računovodja D.O.OIndirect evidence

“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, 2026
Skofja Loka, Slovenia11-5043
4
Simfin D.O.OIndirect evidence

“Simfin je računovodski servis, katerega vizija je v prvi vrsti zadovoljstvo strank.”

Source: company website · checked Aug 30, 2026
Slovenska Bistrica, Slovenia11-5032
5
Rs-Biro D.O.OIndirect evidence

“Smo računovodski servis s 35-letno tradicijo, ki podjetjem zagotavlja zanesljivo računovodstvo, davčno podporo in poslovno svetovanje.”

Source: company website · checked Aug 30, 2026
Zalec, Slovenia11-5032
6
Agencija 5kaPartial evidence

“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, 2026
Slovenske Konjice, Slovenia1-1032
7
Vectigalis LTDPartial evidence

“Vectigalis LLC is a company that provides financial, tax, business consulting, accounting and bookkeeping services.”

Source: company website · checked Aug 30, 2026
Novo Mesto, Slovenia1-1022
8
KER FIN D.O.OIndirect evidence

“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, 2026
Novo Mesto, Slovenia1-1022
9
Topvan D.O.OPartial evidence

“We perform all accounting work, offer tax and business consulting.”

Source: company website · checked Aug 30, 2026
Radovljica, Slovenia1-1011

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, 2026
1-10Median size (employees)
LjubljanaLargest hub · 4 HQs
2Contacts with mobile numbers
Aug 30, 2026Data refreshed

Companies by employee count

1-10
17
11-50
6
51-200
2

Accounting outsourcing firms by metro

MetroCompanies
Accounting outsourcing firms in Ljubljana4
Accounting outsourcing firms in Novo Mesto3
Accounting outsourcing firms in Maribor2
Accounting outsourcing firms in Ljubljana Slo1
Accounting outsourcing firms in Skofja Loka Skofja Loka1
Accounting outsourcing firms in Nova Gorica1
Accounting outsourcing firms in Zalec1

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.