Company lists · Data refreshed September 2026

Top 25 Professional services firms based in Italy

RevenueBase identified 4,289 professional services firms headquartered in Italy as of September 2026 and tracks 23,342 professional contacts across them, including 7,217 with verified work emails and 1,020 with mobile numbers. Milano is the largest hub.

This list covers professional services firms headquartered in Italy, 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.

How to read this list HQ checked on every row Match evidence on every row Refreshed Sep 5, 2026 86% judged on-target in blind review
4,289Companies
23,342Contacts tracked
7,217Verified emails
1,020Mobile numbers
Unlock all 4,289 companies Free signup · no credit card · 500 free credits

The 25 largest professional services firms based in Italy

Ranked by team size
Top 25 of 4,289 professional services firms based in Italy, ranked by team size, largest first. Data refreshed Sep 5, 2026. Evidence rates how directly each company's own description names professional services 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.
#CompanyHeadquartersEmployeesContacts
1
BonellieredeIndirect evidence
Milan, ItalyHQ checked Sep 5, 2026501-1,000819

“BonelliErede è leader in Italia nei servizi legali e fiscali, attivo in tutti i settori del diritto commerciale e nel diritto penale d'impresa.”

Source: company website · checked Sep 5, 2026
2
Deloitte ConsultingStrong evidence
Milan, ItalyHQ checked Sep 5, 202610001+406

“Deloitte è tra le più grandi realtà nei servizi professionali alle imprese in Italia, dove è presente da circa 100 anni.”

Source: company website · checked Sep 5, 2026
3
WST LAW & TAX FirmIndirect evidence
Milano, ItalyHQ checked Sep 5, 2026201-500300

“WST is a firm providing integrated consultancy in Legal, Tax, Risk, Compliance, ESG and Accounting areas of business.”

Source: company website · checked Sep 5, 2026
4
Nexia AudireviIndirect evidence
Milan, ItalyHQ checked Sep 5, 2026201-500268

“Società consulenza aziendale, revisione e organizzazione contabile associata al network internazionale Nexia.”

Source: company website · checked Sep 5, 2026
5
AdactaIndirect evidence
Vicenza, ItalyHQ checked Sep 5, 202651-200177

“La nostra mission è supportare il management aziendale per far crescere il business delle imprese e vincere le sfide di mercato.”

Source: company website · checked Sep 5, 2026
6
Baker Tilly ItalyIndirect evidence
Torino, ItalyHQ checked Sep 5, 202651-200122

“With employees in 146 countries, Baker Tilly provides a wide range of innovative and personalized consulting services in the areas of Audit & Advisory, Tax, Legal, and Consulting…”

Source: company website · checked Sep 5, 2026
7Milano, ItalyHQ checked Sep 5, 202651-200118

“Combiniamo il servizio rapido, flessibile e fortemente personalizzato delle boutique professionali con l'elevata competenza e il rigore dei grandi network internazionali.”

Source: company website · checked Sep 5, 2026
8
Rödl & Partner ItalyIndirect evidence
Milano, ItalyHQ checked Sep 5, 2026201-500115

“As attorneys, tax advisers, management and IT consultants and auditors, we are present with 110 own offices in around 50 countries.”

Source: company website · checked Sep 5, 2026
9
LDPStrong evidence
Milano, ItalyHQ checked Sep 5, 202651-200100

“LDP è uno Studio Professionale Multidisciplinare Internazionale fondato nel 1993, specializzato nell’offerta integrata di servizi premium in ambito fiscale, contabile, legale…”

Source: company website · checked Sep 5, 2026
10
Russo DE Rosa AssociatiIndirect evidence
Milano, ItalyHQ checked Sep 5, 202651-20095

“Ogni giorno ci occupiamo della straordinarietà dei nostri clienti.”

Source: company website · checked Sep 5, 2026
11
Hager & PartnersIndirect evidence
I - 39100 Bolzano (bz), ItalyHQ checked Sep 5, 202651-20092

“HAGER & PARTNERS is an independent consultancy firm for national and international tax and company law, corporate finance and auditing based in Milan, Bolzano and Rome.”

Source: company website · checked Sep 5, 2026
12Milano, ItalyHQ checked Sep 5, 202611-5081

“EOS è una struttura professionale che mette a disposizione dei suoi clienti programmi di consulenza specialistica destinati agli imprenditori e management di aziende private e…”

Source: company website · checked Sep 5, 2026
13Milan, ItalyHQ checked Sep 5, 202651-20077

“RSM Italy Tax Legal & Advisory is an Italian professional firm offering high value-added consulting services in the tax, legal, accounting, M&A and advisory fields.”

Source: company website · checked Sep 5, 2026
14
Fidiger S.P.AIndirect evidence
Milano, ItalyHQ checked Sep 5, 202651-20070
Source: company website · checked Sep 5, 2026
15Milan, ItalyHQ checked Sep 5, 202611-5064

“Siamo professionisti che da molti anni sviluppano relazioni di fiducia con i propri clienti, ponendo al centro i loro bisogni.”

Source: company website · checked Sep 5, 2026
16
IPG LAW FirmIndirect evidence
Turin, ItalyHQ checked Sep 5, 202651-20061

“We are a team of lawyers and accountants.”

Source: company website · checked Sep 5, 2026
17
Studio BNCIndirect evidence
Bergamo, ItalyHQ checked Sep 5, 202651-20059

“Lo Studio Berta, Nembrini, Colombini e Associati presta servizi ad aziende, società e lavoratori autonomi.”

Source: company website · checked Sep 5, 2026
18Milano, ItalyHQ checked Sep 5, 202651-20056

“TCA Triberti Colombo & Associati è uno studio professionale composto da avvocati, commercialisti e consulenti del lavoro.”

Source: company website · checked Sep 5, 2026
19
Spada PartnersIndirect evidence
Milan, ItalyHQ checked Sep 5, 202651-20053

“Spada Partners is an independent full-service Financial, Tax and Accounting Firm.”

Source: company website · checked Sep 5, 2026
20
ArtserStrong evidence
Varese, ItalyHQ checked Sep 5, 2026201-50048

“A tua disposizione team di commercialisti, professionisti nella gestione tributaria e fiscale, consulenti del lavoro, avvocati giuslavoristi, professionisti della riorganizzazione…”

Source: company website · checked Sep 5, 2026
21Mantova, ItalyHQ checked Sep 5, 202651-20048

“CDA Studio Legale Tributario si pone, sul mercato della consulenza, come struttura professionale in grado di proporre al mondo imprenditoriale e alla pubblica amministrazione…”

Source: company website · checked Sep 5, 2026
22Brescia, ItalyHQ checked Sep 5, 202611-5045

“ERGON Commercialisti e Revisori nasce quattordici anni fa con l’obiettivo di fornire un servizio di consulenza innovativo, personalizzato, specializzato, integrato e multi…”

Source: company website · checked Sep 5, 2026
23
Opera STP SRLStrong evidence
Trento, ItalyHQ checked Sep 5, 202611-5044

“Società a responsabilità limitata tra professionisti; Studio integrato di consulenza Aziendale, societaria, fiscale e del lavoro.”

Source: company website · checked Sep 5, 2026
24
Baldi & PartnersIndirect evidence
Reggio Emilia, ItalyHQ checked Sep 5, 202651-20044

“Baldi & Partners opera da oltre 50 anni nell'ambito della consulenza alle aziende.”

Source: company website · checked Sep 5, 2026
25
Arkimede ConsultingIndirect evidence
Tavagnacco, ItalyHQ checked Sep 5, 202651-20044

“In Arkimede Consulting ci occupiamo di consulenza qualificata e di servizi alle imprese, con lo scopo di offrire un valido supporto operativo.”

Source: company website · checked Sep 5, 2026

Showing 25 of 4,289 professional services firms based in Italy

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Professional services firms based in Italy at a glance

As of Sep 5, 2026
1-10Median size (employees)
MilanoLargest hub · 317 HQs
1,020Contacts with mobile numbers
Sep 5, 2026Data refreshed

Companies by employee count

1-10
2,781
11-50
1,318
51-200
132
201-500
15
501-1,000
2
1,001-5,000
2
5,001-10,000
1
10001+
2

Verified emails by last verification

0–30
6,768
31–60
406
61–90
2
90–180
0
180+
41

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 Italy 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 Italy 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, 7,217 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.

Frequently asked

How many professional services firms are there based in Italy?

RevenueBase identified 4,289 professional services firms headquartered in Italy 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?

Bonellierede, headquartered in Italy, tops this list with the largest team on record.

Which city has the most professional services firms?

Milano leads with 317 headquartered companies, followed by Roma (273) and Milan (150).

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 7,217 verified decision-maker contacts tracked across these 4,289 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.